Anisotropy in Reacting Compressible Turbulent Shear Flow

The structure of reacting compressible homogeneous turbulent shear flow is examined via data generated by direct numerical simulations (DNS). The reaction is modeled as one-step, exothermic, irreversible, and Arrhenius type. The effects of reaction are studied by decomposing the velocity field into its solenoidal and dilatational parts. The heat of reaction significantly enhances the dilatational kinetic energy, while it reduces its solenoidal counterpart. The solenoidal and dilatational large scales (kinetic energy) and small scales (viscous dissipation) anisotropies are investigated for cases with different initial turbulent Mach numbers and Reynolds numbers.
Presented at AFOSR International Conference on DNS/LES (3rd) held at Univ. of Texas, Arlington, TX on 5-9 Aug 2001. This article is from ADA412801 DNS/LES Progress and Challenges. Proceedings of the Third AFOSR International Conference on DNS/LES