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Production‐limited delayed detached eddy simulation of turbulent flow and heat transfer
Author(s) -
Ding Puxian,
Wang Shuangfeng,
Chen Kai
Publication year - 2019
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23453
Subject(s) - reynolds averaged navier–stokes equations , turbulence , mechanics , heat transfer , large eddy simulation , detached eddy simulation , turbulence kinetic energy , flow (mathematics) , open channel flow , physics , meteorology
A hybrid RANS/LES model based on the BSL k ‐ ω RANS model, termed the production‐limited delayed detached eddy simulation (PL‐DDES) model, was developed for simulating turbulent flow and heat transfer. The PL‐DDES model was obtained by limiting the production of turbulence kinetic energy with the proposed control resolution function. The PL‐DDES model was tested by simulating turbulent flow and heat transfer in a plane and a wavy channel with different thermal boundary conditions and different Reynolds numbers in this paper. The results of the plane channel flow show that the performance of the PL‐DDES model is better than that of the improved delayed detached eddy simulation (IDDES) model for alleviating the log‐law layer mismatch (LLM) issue. With a much coarser grid resolution, although the resolved turbulent scales decrease, the time‐averaged velocity and temperature are successfully predicted. The capability of predicting turbulent flow and heat transfer over a wavy wall manifests, and the PL‐DDES model has considerable potential in industrial and environmental applications.