Relation between Total Pressure Loss in Supersonic Nozzle and Isentropic Efficiency of Nonequilibrium Disk-shaped MHD Generator We conduct an axisymmetric, two-dimensional (r-z) magnetohydrodynamic numerical analysis of a large-scale, nonequilibrium disk-shaped MHD generator with a ... Y Sakamoto,R...
The variations of performance parameters of the nozzle such as co-efficient of discharge (C_d) thrust efficiency (η_s) and impulse efficiency (η_I) and flow field parameters such as density, pressure, velocity etc. are presented as a function of swirl numbers (α, β) and compared ...
1.An appropriate front lean Angle increases the range of a centrifugal compressor, improves the flow and enhances the isentropic efficiency. 合适的前倾角有利于扩大压气机工作范围,能够改善流道内的流动,提高等熵效率。 2.The results show that the quasi-isentropic compression experiments in the low press...
2.6.10 Polytropic efficiency In an ideal rotodynamic compressor the compression process would be isentropic, which means that it would obey the law: Equ 2.66pvγ=constant where: γ = the isentropic exponent of the gas The polytropic exponent is related to the isentropic exponent by the expression...
(i.e. isentropic) process sets the limit of best performance of any system • It also sets the reference for the definition of efficiency of compressors and turbines • For compressors and pumps, work is done on the system: • For turbines, work is done by the system: actual ideal ...
b) What is the isentropic efficiency of the nozzleSteam is compressed by an adiabatic compressor from 0.2 MPa and 150 C to 0.8 MPa and 350 C at a rate of 1.30 kg/s. The power input to the compressor is (a) 511 kW (b) 3...
Hence, total separation efficiency will be decreased in the presence of process nonisentropicity. Furthermore, the effect of various back pressures in three above cases are compared together and it is shown that the process nonisentropicity reduces overall pressure recoveryShahsavand...
One-dimensional compressible non-isentropic flows inside four different nozzles and Fanno and Rayleigh's subsonic/supersonic flows are computed, which demonstrate the superior efficiency and accuracy of the present formulation.doi:10.1108/eb023617V. Magi...
Keywords: marine compressor; empirical model; mass flow rate; isentropic efficiency; comparative research 1. Introduction Due to the vital role of the turbocharger in improving power density, lowering fuel consumption, and reducing emissions for diesel engines, researchers have conducted extensive ...