K.: Ideal gas relations for the description of real gas isentropic changes. Forsch. Ing.-Wesen 51 , 169–174 (1985).Kouremenos D.A, Kakatsios X.K.Ideal gas relations for the description of the real gas isentropic changes, in :Forschung im Ingenieurwesen 1985;51:169-174....
A isentropic flow is when a fluid flow is both adiabatic and reversible. That is, no heat is added to the flow, and no energy transformations occur due to friction or dissipative effects. For an isentropic flow of a perfect gas, several relations can be derived to define the pressure, den...
Pressure-volume diagrams for three types of compression. 14.6.1 Basic Relations The design of a compressor begins with the first law of thermodynamics, the conservation of energy. It is written for the steady state gas flow through the compressor as follows: (14.2)(h2+u222+gz2)−(h1+u...
However, ASME PTC-10 does not clearly define whether to use the ideal gas or a real gas method to calculate the method to calculate the ratio of heat capacities. The relationship Cp-Cv=R, is valid for ideal gases, but not real gases. The validity of Cp-Cv=R is examined across a ...
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The foregoing relations cannot be applied to a steam turbine as vapors generally do not obey the gas law. The reheat factor (RH) is used to measure the hidden inefficiency of the complete expansion (from state 1 to state 2) due to the irreversibility. (15.20)RH=∑Δhs,p/(h1−h2S) ...
Verify results obtained with values from the appropriate graph in Appendix D with calculations involving ideal gas equations. Is condensation of water vapor a concern? (a) Using the isentropic relations of this chapter, what is the critical pressure (...
Real gas isentropic changes may be described using the three well known ideal gas relations, pv k = const , p (1k) T k =const and Tv k -1 = const , where exponent k has for each equation a different value k p, ν , k p, T and k T, ν respectively. In this paper the ...
there are a large number of gas dynamic problems with entropy increase negligibly slight, which for the purpose of analysis are assumed to be isentropic. Examples are flow through subsonic and supersonic nozzles, as in wind tunnels and rocket engines; and shock-free flow over a wing, fuselag...
Knowledge of the viscosity of pure liquids and respective mixtures and study of the viscosity calculation methods are important for practical and theoretical purposes [29,30]. In the present work, three typical semi-empirical relations are used to correlate the experimental viscosity data of the inve...