...Basant K. Jha; Gabriel Samaila A nonlinear approximation for natural convection boundary layer flow near a vertical wall under the influence of thermal radiation is analyzed. The governing nonlinear partial differential equations are transformed into ordinary differential equations via...

...Xiaohui Bai; Yuan Yi; Fujio Kuwahara; Akira Nakayama A unified integral solution procedure has been proposed to analyze all possible Darcian local thermal nonequilibrium (LTNE) free, forced, and mixed convective boundary layer flows, commonly encountered in porous media engineering applications...

...F. O. Pătrulescu; T. Groşan; I. Pop This paper studies the steady, free convection boundary layer flow about a vertical, isothermal plate embedded in a non-Darcy bidisperse porous medium (BDPM). An appropriate mathematical model is proposed. The boundary layer analysis leads to a system of partial...

...K. S. Kulkarni; U. Madanan; T. W. Simon; R. J. Goldstein If a steady thermal boundary layer is sufficiently thick, wall heat fluxes and associated convective heat transfer coefficients can be directly calculated from measured temperature distributions taken within it using a traversing thermocouple...

...) ψ ˜ = ξ f ( η ) where ξ = x / L and ψ ˜ = ψ / ( L av ) with L being the characteristic length of the plate. Weidman et al. [ 27 ], Postelnicu and Pop [ 28 ], and Roşca and Pop [ 25 ] have shown for the forced convection boundary layer...

... 2012 30 04 2013 In this paper, the steady mixed convection boundary layer flow past a horizontal circular cylinder with a constant surface temperature embedded in a porous medium saturated by a nanofluid containing both nanoparticles and gyrotactic micro-organisms in a stream flowing...

...W. A. Khan; I. M. Pop The effects of homogeneous–heterogeneous reactions on the steady viscoelastic fluid toward a stretching sheet are numerically investigated in this paper. The model developed by Chaudhary and Merkin for homogeneous–heterogeneous reactions in stagnation-point boundary-layer flow...

...Hongwei Li; M. Razi Nalim; Charles L. Merkle A numerical method is developed with the capability to predict transient thermal boundary layer response under various flow and thermal conditions. The transient thermal boundary layer variation due to a moving compressible turbulent fluid of varying...

...T. Grosan; I. Pop The classical problem of forced convection boundary layer flow and heat transfer past a needle with variable wall temperature using nanofluids is theoretically studied. The similarity equations are solved numerically for two types of metallic or nonmetallic, such as copper (Cu...

...Suvash C. Saha; John C. Patterson; Chengwang Lei The natural convection boundary layer adjacent to an inclined plate subject to sudden cooling boundary condition has been studied. It is found that the cold boundary layer adjacent to the plate is potentially unstable to Rayleigh–Bénard instability...

... boundary layers convection external flows finite difference methods friction laminar flow magnetohydrodynamics plates (structures) stagnation flow boundary layer dual solutions induced magnetic field MHD mixed convection Velocity profiles for fixed M = 0.2 and Pr...

...K. Ghosh; R. J. Goldstein A parametric study investigates the effects of wall shear on a two-dimensional turbulent boundary layer. A belt translating along the direction of the flow imparts the shear. Velocity measurements are performed at 12 streamwise locations with four surface-to-freestream...

...” of the turbulent boundary layer “moves” downstream toward the trailing edge of the belt. This is verified from the variation of the Stanton number versus the Reynolds number plots. As the “inner” region of the boundary layer is removed for a belt speed of u w = 10 m / s (freestream velocity u in ≈ 15.4 m / s...

...S. Ghosh Moulic; L. S. Yao Mixed-convection boundary-layer flow over a heated semi-infinite vertical flat plate with uniform surface heat flux, placed in a uniform isothermal upward freestream, has been investigated. Near the leading edge, the effect of natural convection can be treated as a small...

..., no irremovable singularities are introduced into a boundary-layer formulation for power-law non-Newtonian fluids. Therefore, the boundary-layer equations can be solved by marching from leading edge to downstream as any Newtonian fluids. For shear-thinning and shear-thickening fluids, non-Newtonian effects...

... in the absence of Df. 26 09 2006 17 07 2007 07 08 2008 flow through porous media mass transfer natural convection thermal diffusion free convection heat transfer mass transfer boundary layer Soret effect Dufour effect Darcy porous media Coupled heat and mass...

... surface species are included that are involved in 24 additional surface chemical reactions. The platinum surface temperature is fixed, while the properties of the reacting flow are computed. The flow configuration investigated here is the parallel boundary layer reacting flow. Finite-volume equations...

... that the temperature and concentration became negative in the boundary layer depending on the relative intensity of the thermal and solutal stratification. Similarly, Postelnicu ( 15 ) has reported in his study of effect of Dufour and Soret parameters on free convection on combined heat and mass transfer in porous...

...Debjit Mukerji; John K. Eaton; Robert J. Moffat Steady-state experiments with one-dimensional and two-dimensional calorimeters were used to study the convective heat transfer near sharp steps in wall temperature in a turbulent boundary layer. Data acquired under low and high freestream turbulence...

... . Manuscript received by the Heat Transfer Division July 17, 2002; revision received October 14, 2003. Associate Editor: V. Prasad. 17 July 2002 14 October 2003 04 05 2004 natural convection mass transfer boundary layers stratified flow flow through porous media diffusion porous...