Completely passive natural convection

Completely passive natural convection

Natural convection is a basic process which is important in a wide variety of practical applications [1,2]. In essence, a heated fluid expands and rises from buoyancy due to decreased density. Numerous papers have been written on natural or mixed convection in vertical ducts heated on the side. The effects of added viscous dissipation heat have been considered [3–8]. The fluid motions in all pr...

Laminar Natural Convection

The problem of laminar, natural convection flow over a vertical f rus tum of a cone is treated in this paper. The thermal boundary condition at the wall include both the constant wall temperature and the constant wall heat flux cases. The governing differential equations are solved by a combinat ion of quasilinearization and finitedifference methods. Numerical solutions are obtained for a range...

Viscoelastic Natural Convection

Natural Convection Heat Transfer within Octagonal Enclosure

The problem of steady, laminar and incompressible natural convection flow in an octagonalenclosure was studied. In this investigation, two horizontal walls were maintained at a constant hightemperature, two vertical walls were kept at a constant low temperature and all inclined walls wereconsidered adiabatic. The enclosure was assumed to be filled with a Bousinessq fluid. The studyincludes comp...

Parallel Computation for Natural Convection

Parallel computation fortwo-dimensionat co)wective flows in cavities with adiabatic horizontal boundaries and driven by differential heating of the two vertical end walk, are investigated using the Intel Paragon, Intel Touchstone Delta, and Cray 13D. I’he numerical scheme, including a parallel multigrid solver, and domain decomposition techniques for parallel computing are discussed in detail. ...