Mixed convection heat transfer in a differentially heated cavity with two rotating cylinders
Abstract
Mixed convection heat transfer in a differentially heated cavity with two rotating cylinders was studied numerically for various pertinent parameters such as Richardson number, Reynolds number, nondimensional rotation speed of the cylinder, and the location of the cylinders. The results from these simulations were validated using an opensource spectral element code, Nek5000. The results of this study were presented in terms of streamlines, isotherms, local and average Nusselt number, and temperature profiles. The results illustrated that the average Nusselt number depends strongly on the rotation speed of the cylinder, Reynolds number, and Richardson number. However, the average Nusselt number was found to be independent of the rotation speed at high Richardson number (Ri = 10). In addition, the direction of the rotation speed of the cylinders has a profound effect on the average Nusselt. Finally, the study illustrated that the magnitude and direction of the rotation speed of the cylinders have a significant effect on the flow pattern and isotherms.
 Authors:

 Australian College of Kuwait, Safat (Kuwait). Mechanical Engineering Dept.; Univ. of Guelph, Guelph, ON (Canada).School of Engineering, Advanced Manufacturing Lab. (AML)
 Argonne National Lab. (ANL), Argonne, IL (United States). Computational Science Division
 Univ. of California, Riverside, CA (United States). Mechanical Engineering Dept.
 Publication Date:
 Research Org.:
 Argonne National Lab. (ANL), Argonne, IL (United States)
 Sponsoring Org.:
 National Science Foundation (NSF); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
 OSTI Identifier:
 1531157
 Grant/Contract Number:
 AC0206CH11357
 Resource Type:
 Accepted Manuscript
 Journal Name:
 International Journal of Thermal Sciences
 Additional Journal Information:
 Journal Volume: 135; Journal Issue: C; Journal ID: ISSN 12900729
 Publisher:
 Elsevier
 Country of Publication:
 United States
 Language:
 English
 Subject:
 42 ENGINEERING; Heat transfer; Laminar; Mixed convection; Rotating cylinders
Citation Formats
Khanafer, K., Aithal, S. M., and Vafai, K. Mixed convection heat transfer in a differentially heated cavity with two rotating cylinders. United States: N. p., 2018.
Web. doi:10.1016/j.ijthermalsci.2018.07.020.
Khanafer, K., Aithal, S. M., & Vafai, K. Mixed convection heat transfer in a differentially heated cavity with two rotating cylinders. United States. doi:10.1016/j.ijthermalsci.2018.07.020.
Khanafer, K., Aithal, S. M., and Vafai, K. Fri .
"Mixed convection heat transfer in a differentially heated cavity with two rotating cylinders". United States. doi:10.1016/j.ijthermalsci.2018.07.020. https://www.osti.gov/servlets/purl/1531157.
@article{osti_1531157,
title = {Mixed convection heat transfer in a differentially heated cavity with two rotating cylinders},
author = {Khanafer, K. and Aithal, S. M. and Vafai, K.},
abstractNote = {Mixed convection heat transfer in a differentially heated cavity with two rotating cylinders was studied numerically for various pertinent parameters such as Richardson number, Reynolds number, nondimensional rotation speed of the cylinder, and the location of the cylinders. The results from these simulations were validated using an opensource spectral element code, Nek5000. The results of this study were presented in terms of streamlines, isotherms, local and average Nusselt number, and temperature profiles. The results illustrated that the average Nusselt number depends strongly on the rotation speed of the cylinder, Reynolds number, and Richardson number. However, the average Nusselt number was found to be independent of the rotation speed at high Richardson number (Ri = 10). In addition, the direction of the rotation speed of the cylinders has a profound effect on the average Nusselt. Finally, the study illustrated that the magnitude and direction of the rotation speed of the cylinders have a significant effect on the flow pattern and isotherms.},
doi = {10.1016/j.ijthermalsci.2018.07.020},
journal = {International Journal of Thermal Sciences},
number = C,
volume = 135,
place = {United States},
year = {2018},
month = {9}
}
Web of Science
Works referencing / citing this record:
Numerical simulation of transient mixed convection of water–Cu nanofluid in a square cavity with multiple rotating cylinders having harmonic motion
journal, February 2020
 Shirani, Nima; Toghraie, Davood; Zarringhalam, Majid
 Journal of Thermal Analysis and Calorimetry