Simulation of swirling turbulent flows of coaxial jets in a combustor

Journal Article · Fri Feb 11 04:00:00 EST 2000 · Numerical Heat Transfer. Part A, Applications

OSTI ID:20020781

Lei, Y; Zhang, J; Zhou, L

Swirl combustors or burners are found in a wide variety of engineering devices, including furnaces, boilers, and gas turbine engines. Swirl provides an effective means to stabilize the flame, enhance and control the mixing process, increase the combustion efficiency, and eliminate pollutants emission. For achieving design optimization and better performance of the combustors, the properties of swirling turbulent flows should be properly predicted. A numerical simulation of swirling turbulent flows of coaxial jets in a combustor is presented in this paper. The new algebraic Reynolds stress model (ASM) is employed for the closure of the time-averaged governing equations for swirling turbulent flows. Two cases o the swirling flow, i.e., a coswirl jet flow and a counterswirl jet flow, are simulated. The calculated results of the axial and tangential velocities, static pressure, and turbulent fluctuating velocity are compared with the measured data for both cases. The results illustrate that the predictions by the new ASM are closer to the measurements than those obtained by the {kappa}-{var_epsilon} model.

• Research Organization: Tsinghua Univ., Beijing (CN)
• OSTI ID: 20020781
• Journal Information: Numerical Heat Transfer. Part A, Applications, Journal Name: Numerical Heat Transfer. Part A, Applications Journal Issue: 2 Vol. 37; ISSN 1040-7782; ISSN NHAAES
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
33 ADVANCED PROPULSION SYSTEMS
BOILERS
COMBUSTORS
FLOW MODELS
FURNACES
GAS TURBINE ENGINES
JETS
NUMERICAL ANALYSIS
TURBULENT FLOW
VORTEX FLOW