Published 8 issues per year
ISSN Print: 1065-5131
ISSN Online: 1563-5074
Indexed in
NUMERICAL INVESTIGATION OF WAVY MICROCHANNELS WITH RECTANGULAR CROSS SECTION
ABSTRACT
Computational results are presented that describe thermo-hydrodynamic behavior of wavy microchannels of various geometric configurations. The configurations have been obtained by changing the geometric parameters such as relative waviness and aspect ratio for a constant hydraulic diameter of 400 μm. A 3D, steady, laminar conjugate model is developed and validated against available experimental data. A comparative study on wavy and straight channels has been conducted. Fluid flow and heat transfer characteristics have been studied for distinct configurations of wavy channel and it is found that the thermo-hydrodynamic behavior of fluid flow strongly depends on relative waviness and aspect ratio. The increased heat transfer and pressure drop are due to the occurrence of vortices that develop within the channel. Variation of local Nusselt number has been analyzed and found to follow similar trend for different aspect ratios. A performance parameter known as channel effectiveness has been used to analyze the combined effect of heat transfer and pressure drop. Results show that higher waviness channels with an aspect ratio of 1 can be recommended for obtaining higher effectiveness.
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Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Active and Passive Techniques: Their Applications, in Introduction to Enhanced Heat Transfer, 2020. Crossref
-
Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Wavy Fin, 3D Corrugated Fin, Perforated Fin, Pin Fin, Wire Mesh, Metal Foam Fin, Packings, Numerical Simulation, in Heat Transfer Enhancement in Plate and Fin Extended Surfaces, 2020. Crossref
-
Miyagawa Helder K., Quaresma João N. N., Lisboa Kleber M., Cotta Renato M., Integral transform analysis of convective heat transfer within wavy walls channels, Numerical Heat Transfer, Part A: Applications, 77, 5, 2020. Crossref
-
Khan Majid, Shuja S.Z., Yilbas B.S., Al-Qahtani H., A case study on innovative design and assessment of a microchannel heat sink with various turbulators arrangements, Case Studies in Thermal Engineering, 31, 2022. Crossref