Document Type

Article

Disciplines

2. ENGINEERING AND TECHNOLOGY

Publication Details

https://ieeexplore.ieee.org/document/10195867/keywords#keywords

P. S. Kumavat, S. Alimohammadi and S. M. O’Shaughnessy, "An Experimental-Numerical Study of Heat Transfer Enhancement in a Minichannel Using Asymmetric Pulsating Flows," in IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 13, no. 8, pp. 1147-1154, Aug. 2023,

doi: 10.1109/TCPMT.2023.3299085.

Abstract

The development of current and next-generation high-performance electronic devices has led to miniaturization in more densely packed spaces. The increasing power levels have resulted in ever-increasing heat flux densities which necessitates the evolution of new liquid-based heat exchange technologies. Implementation of single-phase cooling systems using pulsating flow is viewed as a potential solution to the problems involving high energy density electronics. This work involves a combined experimental and numerical analysis of pulsating flows in a rectangular mini channel undergoing asymmetric sinusoidal flow pulsation formats. The mini channel design includes a heated bottom section approximated as a constant heat flux boundary by uniformly heating a 12.5 μm thick Inconel foil. Infrared thermography (IRT) is used for thermal measurements of the heated boundary from the hydrodynamically and thermally developed region of the mini channel. A 3-D conjugate heat transfer ANSYS CFX model is used for simulations. Asymmetric sinusoidal pulsating flows in the form of leading and lagging profiles with Womersley number of 2.5 and a flow rate amplitude ratio of 0.5 and 3 are investigated.

DOI

https://doi.org/10.1109/TCPMT.2023.3299085.

Funder

The authors thank the School of Engineering for the funding support. Additionally, they are grateful for the high-performance computing support from Trinity Center for High Performance Computing (TC-HPC) and Irish Center for High-End Computing (ICHEC).

Creative Commons License

Creative Commons Attribution-Share Alike 4.0 International License
This work is licensed under a Creative Commons Attribution-Share Alike 4.0 International License.

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