and, since an isentropic process is normally also adiabatic, W˙/m˙m=hm1−hm2=cpm(Tm1−Tm2) For an ideal gas in an isentropic process, Eq. (7.38) gives Tm2=Tm1(pm2/pm1)(km−1)/kmand, using the results of Example 12.4, this gives Tm2=(20.0+273.15 K)(1.08/0.101)0.66/...
Since this is an open system, the energy rate balance for a steady state, steady flow, single-inlet, single-outlet system is (neglecting kinetic and potential energy effects) ERB (SS, SF, SI, SO) Q˙−W˙+m˙m(hm1−hm2)=0and, since an isentropic process is normally also...
Hugoniots for graphite and diamond have been calculated. Numerical simulation data for the graphite–diamond transition in the isentropic compression process using a metallic z -pinch with diamond saving have been reported.doi:10.1134/S1063784217050231V. V. Prut...
aIn this model, it is assumed that during the vaporization process, only a fraction y of the fluid is transformed into saturated mixture, the other fraction (1-y) remains metastable liquid and is submitted to an isentropic evolution. 在这个模型,它假设,在汽化过程期间,只有流体的分数y被变换成饱...
The effects of heat leaks, hot-cold reservoir temperature ratios, turbine and compressor isentropic efficiencies, and total conductances of heat exchangers on the maximum thermal efficiency and its corresponding parameters are studied. The optimum conductance ratio could be found to effectively use the ...
A natural choice in those cases is the BEC transition, which has been shown to be an isentropic process in Figure 3 whose critical temperature range can be estimated with the ideal gas 𝑇𝑐Tc in Equation (5), adding the correction terms of the Hartree–Fock approximation [20] for a ...
Processes 1–2s and 5–6s are the isentropic processes, so there are: 𝑇2𝑠/𝑇1=𝜋𝑚=𝑥 (8) 𝑇5/𝑇6𝑠=𝜋𝑚𝜋𝑚𝑡=𝑥𝑦 (9) where 𝑚=(𝑘−1)/𝑘 and 𝑘 is the ratio of specific heats. For the IHP of process 4–5, one has: 𝑇4=𝑇...
T1, the temperature of the gases exiting the compressor, was computed in the same way using the isentropic compression equation: (12) T2T1=(P2P1)γ−1γ,T2T1=P2P1γ−1γ, where γ is the heat capacity ratio equals C p /C v. We assume that the temperature change of the liquid...
the changeinanintensivepropertyfora cycleisgivenby, 0 y dy= ∫ 2 Initial:开始的 Cyclicprocesscont. Twoprimaryclassesofthermodynamiccyclesareand .Powercyclesarecycleswhichconvertsomeheat inputintoamechanicalworkoutput,whileheatpumpcyclestransfer powercycles heatpumpcycles heatfromlowtohightemperaturesusing...
It is found that the original ghost fluid method (GFM) as put forth by Fedkiw et al. [J. Comp. Phys. 152 (1999) 457] does not work consistently and efficiently using isentropic fix when applied to a strong shock impacting on a material interface. In this work, the causes for such in...