High-performance airfoils for transonic flows of Bethe–Zel’dovich–Thompson fluids are constructed using a robust and efficient Euler flow solver coupled with a multi-objective genetic algorithm. Bethe–Zel’dovich– Thompson fluids are characterized by negative values of the fundamental derivative of gasdynamics for a range of temperatures and pressures in the vapor phase, which leads to nonclassi...

A supercritical CO2 (S-CO2) Brayton cycle is a compact and simple power conversion system with competitive efficiency. However, the strong real gas effects of S-CO2 pose challenges to design its components. In particular, designing turbomachinery for expansion compression processes has accurately reflect effects. Windage loss one major losses that affects motor load heat generation in turbomach...

Abstract Porous gas bearings (PGBs) have a proactive application in aerospace and turbomachinery. This study investigates the lubrication performance of PGB with condition velocity slip boundary (VSB) owing to high Knudsen number film. The Darcy-Forchheimer laws modified Navier-Stokes equations were adopted describe flow porous layer film region, respectively. An improved bearing experimental p...