Computational Analysis of a Single-Element, Shear-Coaxial, GH2/GO2 Engine.

摘要

As part of a program to develop a computational methodology to obtain high-fidelity rocket engine flow solutions, computations were performed on a single element, gas/gas, H2/O2 combustion engine. The solutions are compared with previously reported solutions to this problem, showing that the problem can be solved on a finer grid with a second-order accurate scheme, thus providing another level of detail to the flow physics. Additional time-accurate solutions are also presented. Comparisons among a 'quasi-steady' solution, averaged time- accurate solution, and experimental data are made and shown that for inherently unsteady flows, a time-accurate solution does as well as or better than a steady solution.