Numerical Simulation of Mode Transition in a Hydrogen-Fueled Scramjet

<p>The Wind-US computational fluid dynamics (CFD) flow solver was used to simulate dual-mode direct-connect ramjet/scramjet engine flowpath tests conducted in the University of Virginia (UVa) Supersonic Combustion Facility (SCF). The objective was to develop a computational capability within Wind-US to aid current hypersonic research and provide insight to flow as well as chemistry details that are not resolved by instruments available. Computational results are compared with experimental data to validate the accuracy of the numerical modeling. These results include two fuel-off non-reacting and eight fuel-on reacting cases with different equivalence ratios, split between one set with a clean (non-vitiated) air supply and the other set with a vitiated air supply (12% H₂O vapor). The Peters and Rogg hydrogen-air chemical kinetics model was selected for the scramjet simulations. A limited sensitivity study was done to investigate the choice of turbulence model and inviscid flux scheme and led to the selection of the k-ε model and Harten, Lax and van Leer (for contact waves) (HLLC) scheme for general use. Simulation results show reasonably good agreement with experimental data and the overall vitiation effects were captured.</p>

Name thesis:degree_name

Master of Science in Aerospace Engineering

Level thesis:degree_level

Thesis - Open Access

Discipline thesis:degree_discipline

Aerospace Engineering

Year

2009

Author dc:creator

• Vyas, Manan Ajay

Contributors dc:contributor

• William Engblom
• L.L. Narayanaswami
• Eric Perrell

• numerical simulation
• mode transition
• scramjet
• Aerodynamics and Fluid Mechanics
• Aerospace Engineering
• Computational Engineering

Repository record dc:identifier

https://commons.erau.edu/db-theses/208

OAI identifier oai:identifier

oai:commons.erau.edu:db-theses-1298