![]() A gas is composed^M of a large number of molecules which are in constant motion. This “sticky” property of the gas is called the viscosity (mu) and it plays a large role in aerodynamic drag. A gas can also exert a tangential (shearing) force on a surface, which acts like friction between solid surfaces. The pressure (p) of a gas equals the perpendicular (normal) force exerted by the gas divided by the surface area on which the force is exerted. The values and relations of the properties define the state of the gas. We usually model air as a uniform (no variation or fluctuation) gas with properties that are averaged from all the individual components.Īny gas has certain properties that we can detect with our senses. Thermal properties of water at different temperatures like density, freezing temperature, boiling temperature, latent heat of melting, latent heat of evaporation, critical temperature and more.Įnthalpy-entropy diagram for water and steam.Home > Beginners Guide to Aeronautics Properties of Air – Text VersionĪir is a mixture of gases, 78% nitrogen and 21% oxygen with traces of water vapor, carbon dioxide, argon, and various other components. Online calculator, figures and tables showing specific heat of liquid water at constant volume or constant pressure at temperatures from 0 to 360 ☌ (32-700 ☏) - SI and Imperial units. Water - Properties at Gas-Liquid Equilibrium Conditionsįigures and tables showing how the properties of water changes along the boiling/condensation curve (vapor pressure, density, viscosity, thermal conductivity, specific heat, Prandtl number, thermal diffusivity, entropy and enthalpy). Temperatureįigures and tables showing the enthalpy and entropy of liquid water as function of temperature - SI and Imperial Units. Online specific heat converter with the most commonly used units. Online calculators, figures and tables showing specific heat, Cp and Cv, of gasous and liquid butane, C 4H 10, at varying temperarure and pressure, SI and Imperial units. Pressure at Constant Temperatureįigures and tables with isobaric (Cp) and isochoric (Cv) specific heat of air at constant temperature and pressure ranging 0.01 to 10000 bara.īutane - Specific Heat vs. Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.Īir - Specific Heat vs. See also other properties of Water at varying temperature and pressure : Boiling points at high pressure, Boiling points at vacuum pressure, Density and specific weight, Dynamic and kinematic viscosity, Enthalpy and entropy, Heat of vaporization, Ionization Constant, pK w, of normal and heavy water, Melting points at high pressure, Prandtl number, Properties at Gas-Liquid Equilibrium Conditions, Saturation pressure, Specific gravity, Specific volume, Thermal conductivity, Thermal diffusivity and Vapour pressure at gas-liquid equilibrium ,Īs well as Specific heat of Air - at Constant Pressure and Varying Temperature, Air - at Constant Temperature and Varying Pressure, Ammonia, Butane, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Ethylene, Hydrogen, Methane, Methanol, Nitrogen, Oxygen and Propane. See Water and Heavy Water - for thermodynamic properties at standard condtions. At high temperatures above 1500 K dissociation becomes appreciable and pressure is a significant variable. The values above apply to undissociated states. ![]()
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