Numerical Investigation of Thermal-Hydraulic Performance of Circular and Non-Circular Tubesin Cross-Flow
| Autor: | V I Salokhin, R Deeb, D V Sidenkov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Computer Science 020209 energy General Mathematics Flow (psychology) General Engineering General Physics and Astronomy 02 engineering and technology General Chemistry Mechanics 01 natural sciences 010305 fluids & plasmas Thermal hydraulics Drop-shaped Friction factor 0103 physical sciences Heat transfer 0202 electrical engineering electronic engineering information engineering |
| Zdroj: | Herald of the Bauman Moscow State Technical University. Series Natural Sciences. :102-117 |
| ISSN: | 1812-3368 |
| DOI: | 10.18698/1812-3368-2021-2-102-117 |
| Popis: | A numerical study has been conducted to clarify flow and heat transfer characteristics around circular, cam, and drop-shaped tubes using the software package ANSYS FLUENT. Reynolds number Re based on equivalent circular tube is varied in range of (8.1--19.2)·103. All tube shapes are investigated under similar operating conditions. Local heat transfer, pressure and friction coefficients over a surface of the tubes were presented. Obtained results agree well with those available in the literature. Correlations of the average Nusselt number Nuav and a friction factor f in terms of Reynolds number for the studied tubes were proposed. The results indicated that Nuav increases with increasing Re. In the contrary, f decreases as Re increases. Thermal-hydraulic performance is used to estimate the efficiency of the cam and drop-shaped tubes. Results show that the drop-shaped tube has the best thermal-hydraulic performance, which is about 1.6 and 2.5 times higher than that of the cam-shaped and circular tube, respectively |
| Databáze: | OpenAIRE |
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