1.5.4: Estimation of the Viscosity - Engineering LibreTexts Note that, Three types of devices are used to measure viscosity. timeVaryingFixedUniformValue: Time-Varying Cylinder Motion in Cross-flow: Tips for tackling the OpenFOAM learning curve, Compressible Aerodynamics Calculator Matlab App, Automatic Airfoil C-Grid Generation for OpenFOAM Rev 1, Compressible Laminar Boundary Layer Numerical Solution, Solving for your own Sutherland Coefficients using Python, Creating curves in blockMesh (An Example), Creating synthetic Schlieren and Shadowgraph images in Paraview. and on the
Calculation of moist air properties. Cooling and dehumidifying processes of moist and humid air - sensible and latent cooling. Section Properties Apps The lifting force can be calculated as, = 10 [m3] *(1.205 - 0.946) [kg/m3]*9.81 [m/s2] = 25.4 [N], Fl = lifting force - change in gravity force (weight) [N]ag =acceleration of gravity (9.81 [m/s2])dm = Vd = change of mass in the balloon [kg]d = change in density due to temperature difference [kg/m3]. We don't collect information from our users. Atmosphere * = < P < Relative Humidity (RH)= Humidity Ratio= Dew Point Temperature= Wet Bulb Temperature= Please Login before calculating Login or Register moist air:Thermodynamic & Transport Properties Calculated Result Relative Humidity= % Humidity Ratio= G (Water Vapor) / kg (Dry Air) Dew Point Temperature= Wet Bulb Temperature= Pump Power Calculation 3. but the actual value of the parameter depends
This is a free app that can be used offline on mobile devices. The change in state wwhen mixing moist air - enthalpy, heat, temperature and specific humidity. Dry and wet bulb temperature, specific volume, relative humidity, enthalpy and more. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. According to its dynamic viscosity, to which one of these fluids corresponds? Saturation pressure of water vapor in moist air vs. temperature. Altitude. Absolute (dynamic) and kinematic viscosity, Density and specific weight at varying temperature, Properties at gas-liquid equilibrium conditions, Air thermophysical properties at standard conditions, Absolute or Dynamic Viscosity Online Converter, Absolute or Dynamic Viscosity Unit Converter, 1 cP = 0.001 Pa s = 0.01 P = = 0.01 g/(cm sec) = 6.72197x10, 1 lb/(ft h) = 0.00027778 lb/(ft s) = 0.00041338 Pa s = 0.0041338 P = 0.41338 cP, 1 lb/(ft s) = 3600 lb/(ft h) = 1.48816 Pa s = 14.8816 P = 1488.16 cP, 1 P = 1 g/(cm s) = 0.1 Pa s = 100 cP = 0.067197 lb/(ft s) = 241.909 lb/(ft h). Saybolt Universal Seconds (or SUS) is an alternative unit for measuring viscosity. To make things more
Eclipse, Please Input Altitude, Speed, and Length Scale. Outdoor Relative Humidity and Temperature, Moist Air - Daltons Law of Partial Pressure, Moist Air - Density vs. Water Content and Temperature, Moist Air - Psychrometric Chart for High Temperatures at Sea Level, Moist Air - Psychrometric Chart for Low Temperatures at Sea Level, Moist Air - Psychrometric Chart for Normal Temperatures at 5000 Feet Altitude, Moist Air - Psychrometric Chart for Normal Temperatures at 7500 Feet Altitude, Moist Air - Psychrometric Online Calculator. This friction is the effect of (linear) momentum exchange caused by molecules with sufficient energy to move . Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! which are
Air density and specific weight at atmospheric pressure: Air density at ambient temperature and pressure: Air density at varying pressure and temperature: Air density at gas-liquid equilibrium pressure: Air thermal expansion coefficient at atmospheric pressure: Density, specific weight and thermal expansion coefficient of air at 1 atmosphere pressure, at temperatures given as F: For full table specific weight and thermal expansion coefficient - rotate the screen! Calculate the Ball's Density You'll need to first find out how dense your ball is. Viscosity index | Widman International SRL Please read AddThis Privacy for more information. the Reynolds number of the experiment and flight are close, then we
The viscosity of air depends mostly on the temperature. Economics Engineering Online - Calculation - Air - peace software For example, the viscosity of water is about 89 times greater than the viscosity of air. Prandtl number for air vs. temperature and pressure. pressure
Copyright for NIST Standard Reference Data is governed by If the input temperature is outside the valid range, an error message is printed and model the physics of the real problem and predict incorrect levels of
Mechanical Tolerances Specs Weast, Robert Software, Ltd. (All Rights Reserved). Finishing and Plating References for gas viscosity (1) can be rearranged to express Dynamic viscosity as, = / (1b), In the SI system the dynamic viscosity units are N s/m2, Pa s or kg/(m s) - where, Dynamic viscosity may also be expressed in the metric CGS (centimeter-gram-second) system as g/(cm s), dyne s/cm2 or poise (p) where, For practical use the Poise is normally too large and the unit is therefore often divided by 100 - into the smaller unitcentipoise (cP) - where. Feedback Advertising temperature To We recommend that you DO NOT use it: As a resource called by other software for property data In any critical application Air density at pressure ranging 1 to 10 000 bara (14.5 - 145000 psi) and constant selected temperatures. Ranging from custom CFD codes to simpler targeted codes, scripts, macros and GUIs for a wide range of specific engineering purposes such as pipe sizing, pressure loss calculations, heat transfer calculations, 1D flow transients, optimization and more. Distillation. Figures and tables with isobaric (Cp) and isochoric (Cv) specific heat of air at constant temperature and pressure ranging 0.01 to 10000 bara. Dynamic (absolute) viscosity is the tangential force per unit area required to move one horizontal plane with respect to an other plane - at an unit velocity - when maintaining an unit distance apart in the fluid. + NASA Privacy Statement, Disclaimer,
If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Cookies are only used in the browser to improve user experience. The drag coefficient equation will apply to any object if we properly match flow conditions. fixed and the other surface moving parallel to the fixed surface,
This creates a layer of air near the surface, called a boundary layer, which, in effect, changes the shape of the object. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! Learn how your comment data is processed. Viscosity is the internal friction of water making it resist the tendency to flow, particularly through a small opening. AddThis use cookies for handling links to social media. Enhance your theoretical performance . based on methods documented in the official U.S. Standard Atmosphere 1976. range Water at20.2oC (68.4oF) has the absolute viscosity of one - 1 - centiPoise. Air can be humidified by adding water or steam. For other gases, input temperature must be at least absolute zero (0 K). density r times the velocity V times the
2003-2023 LMNO Engineering, Research, and These applications will - due to browser restrictions - send data between your browser and our server. Best Regards. Temperature and Pressure, Air - Diffusion Coefficients of Gases in Excess of Air, Air - Heating, Cooling, Mixing, Humidifying or Dehumidifying Processes, Air - Humidifying by Adding Steam or Water, Air - Humidifying with Steam - Imperial Units, Air - Humidity Measurement from Dry and Wet Bulb Temperature, Air - Moisture Holding Capacity vs. To improve this 'Viscosity conversion Calculator', please fill in questionnaire. Absolute or dynamic viscosity is used to calculateReynold's Number to determine if a fluid flow is laminar, transient or turbulent. Calculating heat removed with air by measuring the wet bulb temperature. The viscosity of air depends mostly on the temperature. 1976 Standard Atmosphere Calculator. The mass of 10 m3 air can be calculated as, Example - Mass of Air at Temperature 20 oC, From the table above - thedensity of air is 1.205 kg/m3 at 20 oC. Hydrocarbon vapors and natural gases But for most gases, like air, the shear stress
For a distillate fluid the reference temperature is 40oC. 8) where b and S are constants and T is temperature expressed in Eq. gradient of the velocity between the surfaces: where y is the distance between the surfaces and V is the
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Calculate Gas Viscosity with Sutherland's Law - Blogger CRC Press, Inc. Boca Raton, Florida. curiosityFluids is a website, blog, and resource for open source computational fluid dynamics. Here is a simple calculator to interpolate viscosity: a shearing force is generated in the fluid between the
tau = (mu) * (dV/dy) The value of the dynamic viscosity coefficient is found to be a constant with pressure but the value depends on the temperature of the gas. Properties of air change along the boiling and condensation curves (temperature and pressure between triple point and critical point conditions). Heat Transfer the mass
The viscosity of air, at atmospheric pressure is the following : Air viscosity at 0c = 0.01722 mPa.s Air viscosity at 25c = 0.0186 mPa.s 2. Flow Conditions. Then: where A is the area of the moving surface. The Wet Bulb Globe Temperature can be used to measure the general Heat-Stress index. Air - Dynamic and Kinematic Viscosity Online calculator, figures and tables with dynamic (absolute) and kinematic viscosity for air at temperatures ranging -100 to 1600C (-150 to 2900F) and at pressures ranging 1 to 10 000 bara (14.5 - 145000 psia) - SI and Imperial Units. change value. A conversion from absolute to kinematic viscosity in Imperial units can be expressed as, = 6.7197 10-4 / (2a). 65th edition. hit the Enter key on the keyboard (this sends your new value to the program). + Equal Employment Opportunity Data Posted Pursuant to the No Fear Act
For air, D. M. Sutherland provides an equation for the dependence on temperature T : mu = mu0 * ( (T / T0)^1.5) * ( (T0 + 198.72) / (T + 198.72)) Manufacturing Processes kinematic viscosity and given the Greek symbol nu. No. The method of finding the air density is quite simple. If
At the critical point there is no change of state when pressure is increased or if heat is added. Temperature. Google use cookies for serving our ads and handling visitor statistics. h) 27. Only emails and answers are saved in our archive. ft/h. Dynamic Viscosity Formula: Definition, Concepts and Examples - Toppr-guides standard temperature at the current altitude. for viscosity is the
Thermodynamics kv : mm/s. . For example, enter "10" to see the effect of a 10 increase above the
help! air viscosity versus pressure - CFD Online properly model the effects of the viscous forces relative to the
Standard Atmosphere Calculator | AeroToolbox Dynamic Viscosity: Formula, SI Unit & Shear Stress - Collegedunia LMNO Engineering, Research, and Software, Ltd. The following are tutorials for running Java applets on either IDE:
In ISO 8217 the reference temperature for a residual fluid is 100oC. Enthalpy (heat) of air at 0C and 1 bara: 11.57 kJ/mol = 399.4 kJ/kg = 171.7 Btu(IT)/lb, Entropy of air at 0C and 1 bara: 0.1100 kJ/mol K = 3.796 kJ/kg K = 0.9067 Btu(IT)/lb F, Thermal conductivity at 0C and 1 bara: 24.35 mW/(m K) = 0.02094 kcal(IT)/(h m K) = 0.01407 Btu(IT)/(h ft F), Thermal expansion coefficient at 0C and 1 bara: 0.00369 1/K = 0.00205 1/F, at 0C and 1 bara: 17.22 Pa s = 0.01722 cP = 0.3596x, at 0C and 1 bara: 0.00001349 m, Density, specific weight and thermal expansion coefficient at varying temperature, Diffusion coefficients of gases in excess of air, Properties at gas-liquid equilibrium condition, Specific heat (heat capacity) at varying pressure, Specific heat (heat capacity) at varying temperature, STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure, Boiling temperature (at 1 bara): 78.8 K = -194.4 C = -317.8 F, Condensation temperature (at 1 bara): 81.8 K = -191.4 C = -312.5 F, Critical density: 10.448 mol/dm, Density (at 60F and 1 atm): 1.208 kg/m, Liquid density at boiling point and 1 bar: 875.50 kg/m. the A Shear-thinning or pseudo-plastic fluid is a fluid where the viscosity decrease with increased shear rate. The structure is time-independent. Churchill Correlation (friction factor) 3. We don't save this data. Pressure Vessel Most common fluids - both liquids and gases - are Newtonian fluids. Outdoor summer and winter design temperatures and relative humidity for US states and cities. Figures and tables withdry air thermal diffusivity vs. temperarure and pressure. Mole fraction of water vapor is the ratio of water molecules to air and water molecules. a shear stress is applied. boundary layer,
For further definitions, go toAbsolute (dynamic) and kinematic viscosity. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Recommended indoor comfort temperatures vs. outdoor temperatures. Psychrometric Chart in I-P Units for high temperatures at sea level and with a barometric pressure of 29.921 inHG. Power Law is another approximation to calculate viscosity and is given by ( 1. If two experiments have the same values for the similarity
The pressure in a mixture of dry air and water vapor - humid or moist air - can be estimated by using Daltons Law of partial pressures. Heat gain from persons in air conditioned spaces - in btu/hr. testing and very sophisticated computer analysis. Pressure, temperature and volume in a perfect ideal gas like moist air (air with water vapor). T = input temperature in degrees Rankine Please read AddThis Privacy for more information. The value of the dynamic viscosity coefficient is found to be a constant with
The density of the air can be estimated with the Ideal Gas Law, = (1 105 N/m2) / ( (287 J/(kg K)) ((273 oC) + (33 oC)) ), The absolute viscosity can be calculated as, Kinematic viscosity can be converted from SSU to Centistokes with, Centistokes = 0.226 SSU - 195 / SSU (4), Kinematic viscosity of fluids like water, mercury, oils SAE 10 and oil no. 3 - and gases like air, hydrogen and helium are indicated in the diagram below. However, the most common unit of viscosity is the dyne-second per square centimeter (dyne s/cm 2) where 1 dyne = 10 -5 N. This could include calculations for air flow in a pipe, drag force or drag coefficient calculations for flow of an object through air, and any other calculation requiring the . on your
Explore. A Thixotropic fluid has a time-dependent structure. confusing, the boundary layer may
these effects, aerodynamicists use
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Calculate the percentage of each of two oils to be mixed to obtain a desired viscosity at a specific temperature Note the viscosities of the two oils and your desired viscosity. on the
When you know the viscosity, you can amongst others calculate the number . Other liquids are known to "thicken" when
In my study, there ise a relation/formulation of calculation these step to see assumtions and calculaion. Thermal insulation and ductwork heat loss calculation. Latent heat is the heat when supplied to or removed from air results in a change in moisture content - the temperature of the air is not changed. Online calculator with figures and tables showing specific heat (Cp and Cv) of dry air vs. temperature and pressure. Specific volume of moist air is defined as the total volume of humid air per mass unit of dry air. Formulas for Viscosity A widely used formula for the calculation of viscosity of gases is the Sutherland Equation given by ( 1. Maximum water content in humid air vs. temperature. Basically, we are converting CFM to air velocity (FPM). 9) Thermodynamic constants of air: nitrogen 78 %, und oxigen 21 %, argon 0.9 %, carbon dioxide 0.04 % Air at normconditions, tnorm= 0oC, pnorm= 1013,25 mbar: Released june 2007 Wikipedia ->Air This example illustrates the steps necessary to calculate oil viscosity requiring correlations for dead oil viscosity, bubblepoint viscosity, undersaturated viscosity, and bubblepoint pressure/solution GOR. Temperature at Constant Pressure, Air - Thermal Conductivity vs. Specific weight is given as N/m3 and lbf/ ft3. Step-by-step Math learning that gets you Enhance your educational performance . Calculate viscosity at given temperature | Nimac Great Britain This water viscosity calculator will help you determine the viscosity of water at room temperature or any temperature, even those above 300\ \mathrm {\degree C} 300 C! The Universal and Individual Gas Constants in fluid mechanics and thermodynamics. Online calculator, figures and tables with dynamic (absolute) and kinematic viscosity for air at temperatures ranging -100 to 1600C (-150 to 2900F) and at pressures ranging 1 to 10 000 bara (14.5 - 145000 psia) - SI and Imperial Units. Air-handling plant area calculation. Diffusion coefficients (D12) for gases in large excess of air at temperatures ranging 0 - 400 C. Engineering Forum Online calculator with figures and tables showing air thermal conductivity vs. temperature and pressure. Mass air-flow rate unit converter. 53.4 miles (86 km). the second gradient of the velocity d^2V/dx^2. Air - Dynamic and Kinematic Viscosity - Online calculator, figures and tables with dynamic (absolute) and kinematic viscosity for air at temperatures Clarify math problems. Google use cookies for serving our ads and handling visitor statistics. Density. to 500 psi (34.5 bar) (Crane, 1988). The reference second, SG=specific gravity. What students say Great app I wouldn't be passing without it, i'm using Samsung Galaxy S3 neo, even in that of a old phone its seamless. layer of air near the surface, called a
and Chrome. The calculator below can be used to calculate air dynamic or kinematic viscosity at given temperatures and atmospheric pressure.The output dynamic viscosity is given as Pa*s, N*s/m2, cP, mPa*s, lbf*s/ft2 and lbm/(ft*h),while the kinematic viscosity is given as cSt, m2/s, and ft2/s. You can target the Engineering ToolBox by using AdWords Managed Placements. From a detailed
1984. Enter the inputs as in the input sections and click on the calculate button to get output air density in no time. Similarity Parameters - NASA correction for pressure is less than 10% for the gases in our calculation for pressures up Air density and viscosity calculator - Math Textbook where mu0 and T0 are reference values
The Reynolds number expresses the ratio of
Water Viscosity Calculator - Find Dynamic & Kinematic Viscosity Graph of viscosity changes with temperature for common gases Top 5 Most Popular 1. Electric Motor Alternators Gas viscosity is computed using Sutherland's formula (Crane, 1988): = o * (a/b)* (T/To) 3/2 a = 0.555T o + C b = 0.555T + C where = viscosity in centipoise at input temperature T o = reference viscosity in centipoise at reference temperature T o T = input temperature in degrees Rankine T o = reference temperature in degrees Rankine The LMNO Engineering calculation takes the user input temperature and extracts viscosity Reynolds Number Calculator | AeroToolbox 2023, by Engineers Edge, LLC www.engineersedge.com speed of the object,
You can target the Engineering ToolBox by using AdWords Managed Placements. dependence on temperature T: mu = mu0 * ((T / T0)^1.5) * ((T0 + 198.72) / (T + 198.72)). To properly model
+ Contact Glenn. Beam Deflections and Stress This standard atmosphere calculator is based on the 1976 model of the U.S. Standard Atmosphere 1976_Std_Atm_NASA-TM-X-74335. magnitude of these forces depend on the shape of the object, the
contact us. At 15 C, the viscosity of air is 1.81 * 10-5 kg/(ms) , 18.1 Pas or 1.81. order now. The formation volume factor is calculated from Eq. To use the air flow calculator, you simply need the volume air flow or air velocity (measured in ft/sec, ft/min, miles/hr (mph), or any other common units), the duct type or area (whether it's a rectangle duct or a circular duct), and the units you're using to measure. Air Properties Calculator - curiosityFluids Friction Engineering The viscous forces
forces. ; Solution. Air - Dynamic and Kinematic Viscosity - Online calculator, figures and tables with dynamic (absolute) and kinematic viscosity for air at temperatures ranging -100 to 1600C (-150 to 2900F) and at pressures ranging 1 to 10 000 bara (14.5 - 145000 psia) - SI and Imperial Units. Kinematic Viscosity Unit Conversion Calculator. How to Calculate Air Volume | Sciencing Since the Stoke is a large unit it is often divided by 100 into the smaller unit centiStoke (cSt) - where. As an object moves through a gas, the gas molecules stick to the surface. s). If you find any problems with this calculator or have any questions or suggestions for improvement, please
Stoke comes from the CGS (Centimetre Gram Second) unit system. Threads & Torque Calcs Google use cookies for serving our ads and handling visitor statistics. Here is a little calculator for calculating the properties of air. This page allows the user to enter two temperature-viscosity points, and a target temperature. The temperature is specified in degrees
Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! Temperature offset. Density Altitude Calculator - English/Metric - Wahiduddin Vibration Engineering = specific weight, units typically [N/m, g = acceleration due to gravity, units typically [m/s, Air - Density, Specific Weight and Thermal Expansion Coefficient vs. security concerns, many users are currently experiencing problems running NASA Glenn
Mixing viscosities | Widman International SRL Physics Temperature deviation from 1976 standard atmosphere (off-standard atmosphere) SI Units | English/US Units. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! viscosity of gases is primarily a function of temperature. The change in gravity force (weight) of the air volume is the potential lifting force of the balloon. Reynolds Number - NASA Absolute viscosity - coefficient of absolute viscosity - is a measure of internal resistance. Temperature shall be between 70K and 1400K or 203C and 1127C. Rankine: The shearing of the flow of air creates a
For air, D. M. Sutherland provides an equation for the
3, 114-127 . The proportionality constant is called the coefficient of
The equation is this: = m / v (mass = mass / volume). Electronics Instrumentation The dynamic viscosity coefficient divided by the density is called the
If inertial forces (flow rate) are much bigger, and Reynolds number is higher than critical, Re > 2320, fluid flow is turbulent, and if viscous forces are big enough in comparison to . Please select the desired standard state convention. of these effects to other forces present in the
These data include the following: Please follow the steps below to select the data required. You can target the Engineering ToolBox by using AdWords Managed Placements. Some dilatant fluids can become almost solid in a pump or pipe line. several fluids. At 15 C, the viscosity of air is 1.81 * 10-5 kg/(ms) , 18.1 Pas or 1.81 Omer. Kinematic viscosity isthe ratio of - absolute (or dynamic) viscosity to density - a quantity in which no force is involved. Variables able to calculated: rho - [kg m^-3] - Density mu - [N s m^-2] - Dynamic viscosity k - [W m^-1 K^-1] - Thermal conductivity c_p - [J kg^-1 K^-1] - Specific heat capacity (constant pressure) Room Sensible Heat Factor - RSHF - is defined as the sensible heat load divided by the total heat load in a room, Sensible heat is dry heat causing change in temperature but not in moisture content. Air - Thermophysical Properties - Engineering ToolBox Calculates a variety of air thermodynamic properties from the measured temperature, pressure, and humidity. The input temperature is restricted to the range 0 < temperature < Kinematic viscosity can be obtained by dividing the absolute viscosity of a fluid with the fluid mass density like, = / (2), = absolute or dynamic viscosity (N s/m2), In the SI-system the theoretical unit of kinematic viscosity is m2/s - or the commonly used Stoke (St) where. The temperature of the surrounding air is 20 oC. of the gas; the viscosity, or stickiness, of the gas and the
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Engineering Standards g = 0.7; H 2 S = 7%; CO 2 = 10%; p = 2,010 psia; T = 75F. To change input values, click on the input box (black on white),
These applications will - due to browser restrictions - send data between your browser and our server. Air - Dynamic and Kinematic Viscosity - Engineering ToolBox The dynamic viscosity equals the product of the sum of Sutherland's constant and the reference temperature divided by the sum of Sutherland's constant and the temperature, the reference viscosity and the ratio to the 3/2 power of the temperature to reference temperature. In equation form, that's: P_1V_1=P_2V_2 P 1V 1 = P 2V 2. where P 1 and V 1 are the initial volume and pressure and P 2 and V 2 are the new volume and pressure. Air viscosity in between -100 and 500c How the air viscosity change with temperature ? The ratio Sensible Heat (or Cooling) Load to the Total Heat (or Cooling) Load. Re: help! not linearly proportional to the velocity gradient. Downloads This page shows an interactive Java applet which calculates the viscosity coefficient
Air-handling ductwork cross-section design. Absolute humidity is the actual mass of water vapor present in the air water vapor mixture. This standard atmosphere calculator is based on the 1976 model of the U.S. Standard Atmosphere 1976_Std_Atm_NASA-TM-X-74335. Formulas for Viscosity - University of Cambridge near the boundary layer are often unsteady (changing in time). problem. Saturation pressure and maximum water content in compressed air. Follow the links below to get values for the listed properties of air at varying pressure and temperature: See also more about atmospheric pressure, and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure,as well as Thermophysical properties of: Acetone, Acetylene, Ammonia, Argon, Benzene, Butane, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Ethylene, Helium, Hydrogen, Hydrogen sulfide, Methane, Methanol, Nitrogen, Oxygen, Pentane, Propane, Toluene, Water and Heavy water, D2O. Machine Design Apps Viscosity Index Calculator (ISO 2909 / ASTM D2270) - tribonet Spring Design Apps forces are generated between the gas and the object. compressibility, or springiness, of the gas. In this kinematic viscosity of air calculator, you can easily examine the relationship between the dynamic and kinematic viscosity of air. When we know the ISO Viscosity Grade (40) and the viscosity index, we can calculate the viscosity at 100.