A numerical simulation of shock-enhanced mixing in supersonic combustion

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1990

OSTI ID:5759349

Domel, N D

The development of supersonic combustion engines requires the ability to control fuel/air mixing with supersonic shear layers. The qualitative effect of an oblique shock impinging on a reacting shear layer of this type is examined. The Total Variation Diminishing (TVD) scheme is used in a Beam Warming approximate factorization numerical algorithm to solve the 2-D Navier-Stokes (N-S) equations and the species transport equations. The N-S solver is explicitly coupled to the chemistry package and allows for variable specific heats, molecular weights, and heat of formation. Also used is the algebraic turbulence model of Baldwin and Lomax. The TVD N-S solver is tested and validated with a series of nonreacting cases. The fully reacting turbulent flow is then numerically simulated. A comparison is made among five reacting cases. The numerical results of this model are compared to the experimental data of Burrows and Kurkov who ran wind tunnel tests on a combustion case with no shock impingement. The results of this analysis show that the impingement of an oblique shock does enhance the turbulent mixing and combustion.

• Research Organization: Texas Univ., Arlington, TX (USA)
• OSTI ID: 5759349
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALGORITHMS
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID FLOW
FUEL-AIR RATIO
KINETICS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MIXING
NAVIER-STOKES EQUATIONS
PARTIAL DIFFERENTIAL EQUATIONS
REACTION KINETICS
SHEAR
SHOCK WAVES
SUPERSONIC FLOW
TURBULENT FLOW