Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)
Published: April 1, 2025
A closed-form analytical method is presented to predict a Mach number, pressure, and temperature for scramjet combustor where variable area, friction, heat addition effects are simultaneously present. The was verified against classical solutions of quasi one-dimensional isentropic flow, Fanno Rayleigh flow. number predicted by the agreed within 0.45%, 0.01%, 0.83% with solutions, respectively. results were compared Reynolds Averaged Navier–Stoke based computational fluid dynamics (CFD) model prediction isolator-combustor operating at an inlet 2 fueled Hydrogen–air combustion equivalence ratio 0.2. two demonstrated good agreement 1.02%, 1.76%, 3.38%, 0.95% density, static distribution, An optimization exit height using carried out achieve 35% reduction in stagnation pressure loss. analytically that highly attractive design during conceptual stage as it allows extremely rapid evaluation multitude concepts fraction time what CFD simulation and/or experimental test would have taken.
Language: Английский