...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...

... second-order slip boundary layer numerical solution The classical two-dimensional pure forced convection stagnation-point flows of a viscous fluid towards a rigid horizontal plane and a rigid horizontal axisymmetric surface are known as exact solutions of the Navier–Stokes equations. Himenz [ 1...

... 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 The case of a steady magnetohydrodynamic (MHD) stagnation...

...” 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...

...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...

...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...

... coefficient increases. A change in the sign of the Sherwood number is noticed for certain combinations of Df and Sr values, and these are tabulated in both aiding and opposing buoyancies. Bansod , V. J. , 2003 , “ The Darcy Model for Boundary Layer Flows in a Horizontal Porous Medium Induced...

... 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...

... it is observed that nondimensional mass transfer takes negative values for large Sr and tend to outer edge condition as η increases further. An interesting result is that for small values of Sr, only nondimensional temperature overshoots the wall temperature inside the boundary layer but this phenomena...

... ∞ x = T ∞ , 0 + Ax 1 / 3 , C ∞ = C ∞ , 0 + Bx 1 / 3 where T ∞ , 0 and C ∞ , 0 are the temperature and concentration at any reference point inside the boundary layers respectively. We also assume that the flow is slow...

...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...