The linear hydrodynamic stability of a fluid in a cavity with finite thermal conductivity
| Autor: | Ildebrando Pérez-Reyes, A.S. Ortiz-Pérez |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Fluid Flow and Transfer Processes
Hydrodynamic stability Materials science Mechanical Engineering 02 engineering and technology Rayleigh number Mechanics 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Thermal conductivity Criticality 0103 physical sciences Thermal 0210 nano-technology |
| Zdroj: | International Journal of Heat and Mass Transfer. 145:118768 |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2019.118768 |
| Popis: | New results on the linear hydrodynamic stability of a fluid, heated from below, confined in a rectangular cavity are presented. Finite thermal conductivities of the bounding horizontal walls are introduced so that more realistic values of the Rayleigh number were found. Parity of the rolls in the cavity are used to investigate the hydrodynamics of the fluid subject to different thermal boundaries. Plots at different aspect ratios in which the Rayleigh number is mapped from ideal insulating to perfect thermal conducting horizontal and vertical walls are shown and discussed. The discussion on the physical mechanism driving kinks in the curves of criticality is extended to include the effects of finite thermal conducting horizontal walls. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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