INSTABILITY OF THE RAYLEIGH-BENARD CONVECTION FOR INCLINED LOWER WALL WITH TEMPERATURE VARIATION
| Autor: | Predrag Živković, Mića Vukić, Mladen Tomić, Sadoon Ayed, Gradimir Ilić |
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| Rok vydání: | 2016 |
| Předmět: |
inclined walls
Polymers and Plastics DNS lcsh:Mechanical engineering and machinery Direct numerical simulation Thermodynamics 02 engineering and technology nonlinear stability analysis 01 natural sciences Instability Industrial and Manufacturing Engineering 010305 fluids & plasmas Physics::Fluid Dynamics 0203 mechanical engineering 0103 physical sciences lcsh:TJ1-1570 Mean radiant temperature boussinesq approximation Civil and Structural Engineering Convection cell Rayleigh–Bénard convection Chemistry Mechanical Engineering Rayleigh number Mechanics Horizontal plane 020303 mechanical engineering & transports Amplitude Mechanics of Materials Constant (mathematics) |
| Zdroj: | Scopus-Elsevier Facta Universitatis. Series: Mechanical Engineering, Vol 14, Iss 2, Pp 179-197 (2016) Facta universitatis-series: Mechanical Engineering (2016) 14(2):179-197 |
| ISSN: | 2335-0164 0354-2025 |
| DOI: | 10.22190/fume1602179a |
| Popis: | This paper deals with an analysis of a two-dimensional viscous fluid flow between the two parallel plates inclined with respect to the horizontal plane, where the lower plate is heated and the upper one is cooled. The temperature difference between the plates is gradually increased during a certain time period after which it is temporarily constant. The temperature distribution on the lower plate is not constant in x-direction, there is a longitudinal sinusoidal temperature variation imposed on the mean temperature. We have investigated the wave number and amplitude influence of this variation on the subcritical stability and the onset of the Rayleigh-Bénard convective cells, by direct numerical simulation of 2D Navier-Stokes and energy equation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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