TY - CHAP
T1 - Assessment of RANS Turbulence Models for Straight Cooling Ducts
T2 - Secondary Flow and Strong Property Variation Effects
AU - Kaller, Thomas
AU - Doehring, Alexander
AU - Hickel, Stefan
AU - Schmidt, Steffen J.
AU - Adams, Nikolaus A.
PY - 2021
Y1 - 2021
N2 - We present well-resolved RANS simulations of two generic asymmetrically heated cooling channel configurations, a high aspect ratio cooling duct operated with liquid water at (Formula Presented) and a cryogenic transcritical channel operated with methane at (Formula Presented). The former setup serves to investigate the interaction of turbulence-induced secondary flow and heat transfer, and the latter to investigate the influence of strong non-linear thermodynamic property variations in the vicinity of the critical point on the flow field and heat transfer. To assess the accuracy of the RANS simulations for both setups, well-resolved implicit LES simulations using the adaptive local deconvolution method as subgrid-scale turbulence model serve as comparison databases. The investigation focuses on the prediction capabilities of RANS turbulence models for the flow as well as the temperature field and turbulent heat transfer with a special focus on the turbulent heat flux closure influence.
AB - We present well-resolved RANS simulations of two generic asymmetrically heated cooling channel configurations, a high aspect ratio cooling duct operated with liquid water at (Formula Presented) and a cryogenic transcritical channel operated with methane at (Formula Presented). The former setup serves to investigate the interaction of turbulence-induced secondary flow and heat transfer, and the latter to investigate the influence of strong non-linear thermodynamic property variations in the vicinity of the critical point on the flow field and heat transfer. To assess the accuracy of the RANS simulations for both setups, well-resolved implicit LES simulations using the adaptive local deconvolution method as subgrid-scale turbulence model serve as comparison databases. The investigation focuses on the prediction capabilities of RANS turbulence models for the flow as well as the temperature field and turbulent heat transfer with a special focus on the turbulent heat flux closure influence.
UR - http://www.scopus.com/inward/record.url?scp=85094604748&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-53847-7_20
DO - 10.1007/978-3-030-53847-7_20
M3 - Chapter
AN - SCOPUS:85094604748
T3 - Notes on Numerical Fluid Mechanics and Multidisciplinary Design
SP - 309
EP - 321
BT - Notes on Numerical Fluid Mechanics and Multidisciplinary Design
PB - Springer
ER -