Strongly Heated Turbulent Flow in a Channel with Pin Fins-Reference-Cited by-同舟云学术

Strongly Heated Turbulent Flow in a Channel with Pin Fins

Published:2023-01-22 Issue:3 Volume:16 Page:1215
ISSN:1996-1073
Container-title:Energies
language:en
Short-container-title:Energies

Author:

Lee Chien-Shing¹,Shih Tom I. -P.¹,Bryden Kenneth Mark²,Dalton Richard P.³,Dennis Richard A.³

Affiliation:

1. School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN 47907, USA

2. Ames Laboratory, U.S. Department of Energy, Ames, IA 50010, USA

3. National Energy Technology Laboratory, U.S. Department of Energy, Morgantown, WV 26507, USA

Abstract

Large-eddy simulations (LES) were performed to study the turbulent flow in a channel of height H with a staggered array of pin fins with diameter D = H/2 as a function of heating loads that are relevant to the cooling of turbine blades and vanes. The following three heating loads were investigated—wall-to-coolant temperatures of Tw/Tc = 1.01, 2.0, and 4.0—where the Reynolds number at the channel inlet was 10,000 and the back pressure at the channel outlet was 1 bar. For the LES, two different subgrid-scale models—the dynamic kinetic energy model (DKEM) and the wall-adapting local eddy-viscosity model (WALE)—were examined and compared. This study was validated by comparing with data from direct numerical simulation and experimental measurements. The results obtained show high heating loads to create wall jets next to all heated surfaces that significantly alter the structure of the turbulent flow. Results generated on effects of heat loads on the mean and fluctuating components of velocity and temperature, turbulent kinetic energy, the anisotropy of the Reynolds stresses, and velocity-temperature correlations can be used to improve existing RANS models.

Funder

US Department of Energy’s Ames Laboratory

National Energy Technology Laboratory

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

Link

https://www.mdpi.com/1996-1073/16/3/1215/pdf

Reference34 articles.

1. Han, J.C., Dutta, S., and Ekkad, S.V. (2000). Gas Turbine Heat Transfer and Cooling Technology, Taylor & Francis.

2. Goldstein, R. (2001). Heat Transfer in Gas Turbine Systems, Annals of the New York Academy of Sciences.

3. Sundén, B., and Faghri, M. (2001). WIT Press.

4. Shih, T.I.-P., and Yang, V. (2014). Progress in Astronautics and Aeronautics, American Institute of Aeronautics and Astronautics.

5. Pressure Loss and Heat Transfer Through Multiple Rows of Short Pins;Metzger;Heat Transf.,1982

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