SIMULATION OF ANNULAR SWIRLING TURBULENT FLOWS WITH A NEW ALGEBRAIC REYNOLDS STRESS MODEL

Abstract

This article presents a numerical simulation of swirling turbulent flows in a cylindrical annular duct, A new algebraic Reynolds stress model (ASM), which was developed specifically for simulating swirling turbulent flows, was employed for the closure of the second-order correlation moments in the time-averaged governing equations. The k-e turbulence model was also used in the present simulation for comparison. The calculated mean flow fields as well as the turbulence quantities were compared in detail with measured test data under different swirl numbers. The predictions by the new ASM are in generally good agreement with the measurements of gas axial and tangential velocities, Reynolds stresses, and wall shear stresses. It is shown that the new ASM is superior to the k-e model in simulating annular swirling turbulent flows.