Numerical Investigation on heat transfer enhancement and entropy generation in a triangular ribbed-channel using nanofluid | ||
| Anbar Journal of Engineering Sciences | ||
| Article 7, Volume 12, Issue 1, May 2021, Pages 65-75 PDF (2.98 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.37649/aengs.2021.171199 | ||
| Authors | ||
| Mohammad N. Dahham; M. A. Ahmed | ||
| Department of Mechanical Engineering, College of Engineering, University of Anbar Ramadi, Anbar, Iraq | ||
| Abstract | ||
| In this paper, turbulent convective heat transfer in a triangular-ribbed chan-nel has been numerically investigated. SiO2-water with nanoparticles volume fraction of 4% and nanoparticles diameters of 30 nm is employed with Reyn-olds number ranging from 2000 to 8000. The governing continuity, momen-tum and energy equations in addition to low Reynolds number k-ε model have been transformed into body-fitted coordinates system and then solved using finite volume method. The effects of Reynolds number and rib heights on Nusselt number, pressure drop, thermal-hydraulic performance factor and entropy generation are presented and discussed. It is observed that the Nusselt number, pressure drop and thermal performance increase with in-creasing of Reynolds number and rib height. In addition, the highest perfor-mance factor can be obtained at Reynolds number of 6500 and rib height of 1.5 mm. | ||
| Keywords | ||
| Triangular ribs Thermal hydraulic performance Turbulent Flow Nanofluids Entropy generation | ||
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