DNS of droplet impact on a solid particle: Effect of wettability on solid conjugate heat transfer
| Autor: | H.V. Patel, NG Niels Deen, A. Panda, J.A.M. Kuipers, S Saurish Das |
|---|---|
| Přispěvatelé: | Multi-scale Modelling of Multi-phase Flows, Power & Flow, Group Deen, EIRES Eng. for Sustainable Energy Systems, EIRES Chem. for Sustainable Energy Systems |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Conjugate heat transfer 02 engineering and technology Conductivity 01 natural sciences 010305 fluids & plasmas law.invention Physics::Fluid Dynamics law Gas-Liquid-Solid flow 0103 physical sciences Heat transfer Fluid dynamics Volume of fluid method Cartesian coordinate system Fluid Flow and Transfer Processes Trickle bed Mechanical Engineering Mechanics Immersed boundary method 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal conduction Three phase flow Wettability Wetting 0210 nano-technology |
| Zdroj: | International Journal of Heat and Mass Transfer, 158:119859. Elsevier |
| ISSN: | 0017-9310 |
| Popis: | Heat transfer between solid particles and liquid droplets is a key phenomenon encountered in many industrial applications. We investigate the fluid dynamics and heat transfer between a liquid droplet and a static solid particle by means of direct numerical simulations. The presence of the solid particle is represented through a sharp interface immersed boundary method (IBM) on a Cartesian computational grid, whereas the motion of the gas-liquid interface is tracked by a mass conservative volume of fluid method (VOF). To account for the thermal coupling between the gas and the liquid, and more specifically the conjugate heat transfer between the fluid and the solid, a second order accurate diffused interface formulation is proposed for the conduction term in the energy equation. A detailed validation of the method is also presented. We have studied the effect of wettability and solid conductivity both of which have been found to have significant effect on the total heat transfer rate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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