SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (1): 1-8.DOI: 10.1016/j.cjche.2019.04.007

• Fluid Dynamics and Transport Phenomena •     Next Articles

Numerical study on turbulent mixed convection in a vertical plane channel using hybrid RANS/LES and LES models

Puxian Ding, Shuangfeng Wang, Kai Chen   

  1. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
  • Received:2018-11-30 Revised:2019-04-05 Online:2020-03-31 Published:2020-01-28
  • Contact: Shuangfeng Wang, Kai Chen
  • Supported by:
    Supported by the Program of International Science and Technology Cooperation of China (2016YFE0118100) and Dongguan Innovative Research team Program (2014607119).

Numerical study on turbulent mixed convection in a vertical plane channel using hybrid RANS/LES and LES models

Puxian Ding, Shuangfeng Wang, Kai Chen   

  1. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
  • 通讯作者: Shuangfeng Wang, Kai Chen
  • 基金资助:
    Supported by the Program of International Science and Technology Cooperation of China (2016YFE0118100) and Dongguan Innovative Research team Program (2014607119).

Abstract: Two Delayed-Detached Eddy Simulation (DDES) models, and a Large-Eddy Simulation (LES) model are used to investigate the turbulent flows and mixed convection between a hot plate and a cold plate via the software FLUENT. The two DDES models include Production-limited DDES (PL-DDES) and Improved DDES (IDDES) models. The Wall-Adapting Local Eddy-Viscosity (WALE) model is the used LES model. The numerical computations are performed at Reynolds number Reb=4494 and different Richardson numbers Ri=0.025, 0.048, 0.1. The comparing data is from the Direct Numerical Simulation (DNS) at Reb=4494 and Ri=0.048. The comparison reveals that the two DDES models have better performance in predicting time-averaged parameters than the WALE model in the aiding flow. The best predicted time-averaged results are obtained by the PL-DDES model in the opposing flow. Furthermore, the results of different Ri obtained by the PL-DDES model agree well with the DNS data.

Key words: Turbulent mixed convection, Hybrid RANS/LES model, PL-DDES model, WALE model, Vertical plane channel

摘要: Two Delayed-Detached Eddy Simulation (DDES) models, and a Large-Eddy Simulation (LES) model are used to investigate the turbulent flows and mixed convection between a hot plate and a cold plate via the software FLUENT. The two DDES models include Production-limited DDES (PL-DDES) and Improved DDES (IDDES) models. The Wall-Adapting Local Eddy-Viscosity (WALE) model is the used LES model. The numerical computations are performed at Reynolds number Reb=4494 and different Richardson numbers Ri=0.025, 0.048, 0.1. The comparing data is from the Direct Numerical Simulation (DNS) at Reb=4494 and Ri=0.048. The comparison reveals that the two DDES models have better performance in predicting time-averaged parameters than the WALE model in the aiding flow. The best predicted time-averaged results are obtained by the PL-DDES model in the opposing flow. Furthermore, the results of different Ri obtained by the PL-DDES model agree well with the DNS data.

关键词: Turbulent mixed convection, Hybrid RANS/LES model, PL-DDES model, WALE model, Vertical plane channel