Numerical simulation of unsteady mixed convection of nanofluid in a lid-driven square cavity

Autor:	Nagehan Alsoy-Akgün
Rok vydání:	2018
Předmět:	Matematik Helmholtz equation Reynolds number General Medicine Rayleigh number Mechanics Vorticity Square (algebra) Physics::Fluid Dynamics DRBEM nanofluid lid-driven cavity symbols.namesake Nanofluid Flow (mathematics) Combined forced and natural convection symbols Mathematics
Zdroj:	Volume: 48, Issue: 4 1057-1078 Hacettepe Journal of Mathematics and Statistics
ISSN:	1303-5010 2651-477X
DOI:	10.15672/hjms.2018.559
Popis:	The behavior of unsteady mixed convection flow of $Cu-$water based nanofluids is investigated numerically inside a square lid-driven partially heated flow below. Dual Reciprocity Boundary Element Method is used to solve stream function-vorticity form of the governing equations of the problem. The need of time integration scheme is eliminated by transforming the vorticity transport and energy equations to modified Helmholtz equations. This procedure also diminishes the stability problems. The numerical results are given for several values of Reynolds number $(Re)$, Rayleigh number $(Ra)$, heat source location $(D)$, heat source length $(B)$ and solid volume fraction $(\phi)$. The steady-state results are in good agreement with the results available in the literature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f72978f9eb6e8d5e5445b2551f66741 https://doi.org/10.15672/hjms.2018.559 Zobrazit plný text záznamu