Dimple and protrusion play important roles in the heat transfer enhancement and flow characteristic in cooling channels, which widely employed within electronic cooling systems. Non-Newtonian fluid has significant differences with Newtonian fluid, such as water, in fluid characteristic. In this study, an experiment on the viscosity of three different kinds of non-Newtonian fluids, i.e., xanthan gum solution, Carbopol 934 solution, polyacrylamide solution, was first accomplished to acquire the viscosity with different mass fractions. Then, experimental measurements on heat transfer and friction characteristics of non-Newtonian fluid in a rectangular channel with dimples and protrusions were conducted. The overall Nusselt numbers (Nu) and Fanning friction factors at different dimple/protrusion structures were obtained with various inlet flow rates and mass fractions. The results show that only xanthan gum solution has the significant shear thinning effect within the concentration range of this study, and the dimples/protrusions both have great effect on the heat transfer enhancement in the rectangular channel, and that the heat transfer of the case with the protrusions and crossing arrangement can be further enhanced with the higher Nu when compared to the case with the dimples and aligned arrangement. Moreover, an increase in Nu with the higher non-Newtonian fluid mass fraction is observed.
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June 2014
Research-Article
An Experimental Study on Heat Transfer Enhancement of Non-Newtonian Fluid in a Rectangular Channel With Dimples/Protrusions
Di Zhang,
Di Zhang
Key Laboratory of Thermal Fluid
Science and Engineering,
Ministry of Education, School of Energy and
Power Engineering,
Science and Engineering,
Ministry of Education, School of Energy and
Power Engineering,
Xi'an Jiaotong University
,Xi'an, Shaanxi Province 710049
, China
Search for other works by this author on:
Lu Zheng,
Lu Zheng
Key Laboratory of Thermal Fluid
Science and Engineering,
Ministry of Education, School of Energy and
Power Engineering,
Science and Engineering,
Ministry of Education, School of Energy and
Power Engineering,
Xi'an Jiaotong University
,Xi'an, Shaanxi Province 710049
, China
Search for other works by this author on:
Gongnan Xie,
Gongnan Xie
Engineering Simulation and
Aerospace Computing (ESAC),
School of Mechanical Engineering,
P.O. Box 552,
e-mail: xgn@uwpu.edu.cn
Aerospace Computing (ESAC),
School of Mechanical Engineering,
Northwestern Polytechnical University
,P.O. Box 552,
Xi'an, Shaanxi Province 710072
, China
e-mail: xgn@uwpu.edu.cn
Search for other works by this author on:
Yonghui Xie
Yonghui Xie
1
Professor
School of Energy and Power Engineering,
e-mail: yhxie@mail.xjtu.edu.cn
School of Energy and Power Engineering,
Xi'an Jiaotong University
,Xi’an, Shaanxi Province 710049
, China
e-mail: yhxie@mail.xjtu.edu.cn
1Corresponding author.
Search for other works by this author on:
Di Zhang
Key Laboratory of Thermal Fluid
Science and Engineering,
Ministry of Education, School of Energy and
Power Engineering,
Science and Engineering,
Ministry of Education, School of Energy and
Power Engineering,
Xi'an Jiaotong University
,Xi'an, Shaanxi Province 710049
, China
Lu Zheng
Key Laboratory of Thermal Fluid
Science and Engineering,
Ministry of Education, School of Energy and
Power Engineering,
Science and Engineering,
Ministry of Education, School of Energy and
Power Engineering,
Xi'an Jiaotong University
,Xi'an, Shaanxi Province 710049
, China
Gongnan Xie
Engineering Simulation and
Aerospace Computing (ESAC),
School of Mechanical Engineering,
P.O. Box 552,
e-mail: xgn@uwpu.edu.cn
Aerospace Computing (ESAC),
School of Mechanical Engineering,
Northwestern Polytechnical University
,P.O. Box 552,
Xi'an, Shaanxi Province 710072
, China
e-mail: xgn@uwpu.edu.cn
Yonghui Xie
Professor
School of Energy and Power Engineering,
e-mail: yhxie@mail.xjtu.edu.cn
School of Energy and Power Engineering,
Xi'an Jiaotong University
,Xi’an, Shaanxi Province 710049
, China
e-mail: yhxie@mail.xjtu.edu.cn
1Corresponding author.
Contributed by the Electronic and Photonic Packaging Division of ASME for publication in the JOURNAL OF ELECTRONIC PACKAGING. Manuscript received July 29, 2013; final manuscript received October 10, 2013; published online April 29, 2014. Assoc. Editor: Gary Miller.
J. Electron. Packag. Jun 2014, 136(2): 021005 (10 pages)
Published Online: April 29, 2014
Article history
Received:
July 29, 2013
Revision Received:
October 10, 2013
Citation
Zhang, D., Zheng, L., Xie, G., and Xie, Y. (April 29, 2014). "An Experimental Study on Heat Transfer Enhancement of Non-Newtonian Fluid in a Rectangular Channel With Dimples/Protrusions." ASME. J. Electron. Packag. June 2014; 136(2): 021005. https://doi.org/10.1115/1.4025713
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