Simulation of swirling turbulent flows of coaxial jets in a combustor
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, Vol. 37, Issue 2; Other Information: PBD: 11 Feb 2000; ISSN 1040-7782
- Country of Publication:
- United States
- Language:
- English
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