Thermal dispersion and inertia effects on vortex instability of a horizontal mixed convection flow in a saturated porous medium

Autor:	Jiing-Lin Chen, Jiin Yuh Jang
Rok vydání:	1993
Předmět:	Fluid Flow and Transfer Processes Materials science Mechanical Engineering media_common.quotation_subject Thermodynamics Rayleigh number Mechanics Condensed Matter Physics Inertia Instability Vortex Boundary layer Heat flux Combined forced and natural convection Dispersion (optics) media_common
Zdroj:	International Journal of Heat and Mass Transfer. 36:383-389
ISSN:	0017-9310
DOI:	10.1016/0017-9310(93)80014-l
Popis:	A numerical analysis is made to analyze the thermal dispersion and inertia effects on the vortex mode of instability of a horizontal mixed convection boundary layer flow with a uniform free stream velocity in a saturated porous medium adjacent to a uniform heat flux surface. The stability analysis is based on the linear stability theory and the resulting eigenvalue problem is solved by the local similarity method. The critical Rayleigh number and the associated wave number at the onset of vortex instability are obtained for various values of thermal dispersion and inertia parameters. It is found that the thermal dispersion effect stabilizes the flow to the vortex mode of disturbance, while the inertia effect destabilizes it.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d71428fb151f69cce83d70457698f018 https://doi.org/10.1016/0017-9310(93)80014-l Zobrazit plný text záznamu