Numerical study of fluid flow and convective heat transfer characteristics in a twisted elliptic tube
| Autor: | Seong Hyun Park, Hyung Rak Kim, Man Yeong Ha, June Kee Min, Sangkeun Kim, Minsung Kim |
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| Rok vydání: | 2016 |
| Předmět: |
Convective heat transfer
Turbulence 020209 energy Mechanical Engineering Reynolds number 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Physics::Fluid Dynamics symbols.namesake Classical mechanics Mechanics of Materials Heat transfer Flow conditioning 0202 electrical engineering electronic engineering information engineering symbols Fluid dynamics 0210 nano-technology Navier–Stokes equations Reynolds-averaged Navier–Stokes equations Mathematics |
| Zdroj: | Journal of Mechanical Science and Technology. 30:719-732 |
| ISSN: | 1976-3824 1738-494X |
| DOI: | 10.1007/s12206-016-0127-4 |
| Popis: | We investigated the flow and heat transfer characteristics in a Twisted elliptic tube (TET). The effects of geometry parameters such as the aspect ratio and number of rotations in the TET were analyzed comparatively using three-dimensional (3-D) numerical simulation. We also solved numerically the conservation equations of continuity, momentum, and energy in the TET. Fully developed flow in the TET was modeled using the realizable k-e turbulence model and steady incompressible Reynolds-averaged Navier-Stokes (RANS) equations. The simulation was performed for Reynolds numbers of 100, 1000 and 10000. The pressure drop and the heat transfer of the TET were assessed in terms of the Darcy friction factor and Colburn j-factor, and overall performance was evaluated using the area and volume goodness factors. |
| Databáze: | OpenAIRE |
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