Single-phase conjugate heat transfer analysis of U-bend microchannel (UBMC) and Compare the result with a Straight microchannel (SMC) of same length.
Heat flux, Average Nusselt number, Total pressure drop, Performance evaluation factor.
Single-phase conjugate heat transfer analysis of U-bend microchannel (UBMC) a three –dimensional numerical study for laminar flow has been performed to evaluate the fluid flow and heat transfer characteristics. Three different geometry configurations are considered for the UBMC with a constant hydraulic diameter of 0.4 mm and radius of curvature of the U bend R = 2 mm, 3 mm, and 4 mm. Comparison of UBMC is done with equivalent length (along center) straight microchannel (SMC) with total channel length L = 36.2 mm,39.4 mm, and 42.5 mm, respectively, for three different Reynolds numbers of 50, 100, and 200 at a constant applied heat flux of 49184 W/m2. The performance evaluation factor (PEF) value indicate an improvement in heat transfer rate for the UBMC compared to SMC. Parameters such as the local Nusselt number, average Nusselt number, and total pressure drop are evaluated. It is observed that bending effect improved overall performance of UBMC over SMC by 34% for R = 4 mm at a Reynolds number of 200. Qualitative picture of the impact of curvature on the performance of UBMC in the form of velocity and temperature contours are also presented. It is also found that performance of UBMC with low radius of curvature can be improved with high pumping power, since the pressure drop is unavoidable. So, it is better to use channels with high radii of curvature at relatively low Reynolds number.
"Single-phase conjugate heat transfer analysis of U-bend microchannel (UBMC) and Compare the result with a Straight microchannel (SMC) of same length.", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.8, Issue 3, page no.636 - 648, March-2023, Available :https://ijsdr.org/papers/IJSDR2303104.pdf
Volume 8
Issue 3,
March-2023
Pages : 636 - 648
Paper Reg. ID: IJSDR_204497
Published Paper Id: IJSDR2303104
Downloads: 000347226
Research Area: Mechanical Engineering
Country: JEHANABAD, BIHAR, India
ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
Publisher: IJSDR(IJ Publication) Janvi Wave
