boundary layer


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boundary layer

In fluidics, a narrow region next to a fixed boundary or surface where the fluid velocity rapidly changes from zero to some finite value.
References in periodicals archive ?
However, [H.sup.+] (hydrogen ion) and S[O.sub.4.sup.2-] diffuse into the inner concrete through the corrosion layer from the soaking solution under the action of concentration gradient thereby forming the reaction boundary layer. On the outer boundary of the reaction boundary layer, the O[H.sup.-]concentration is zero, and the [H.sup.+] concentration is the concentration of the soaking solution [H.sup.+]; however, on the inner boundary of the noncorrosion surface, the H+ concentration is zero, and the O[H.sup.-] concentration is the concentration found in the saturated Ca[(OH).sub.2] solution.
In this study, August 12 was chosen as a case study for the atmospheric boundary layer and local circulation analyses, due to the absence of any major synoptic forcing following the precipitation on August 8.
Passive flow control in boundary layer ingesting semisubmerged inlet, 51st AIAA/SAE/ASEE Joint Propulsion Conference: 1-8., Orlando, USA.
The boundary layer equations of the fluid flow are the composition of the continuity equation, the momentum equation, energy equation and concentration equation, which are formulated based on Maxwell's equation and Ohm's law in the presence of Electrical Magneto-Fluid Dynamics (EMHD).The incompressible flow of viscous fluid in the presence of an applied magnetic field B(x) is taken into consideration.
Balakumar [18] used a numerical simulation method to analyze the influence of distributed roughness on the receptivity and stability of the hypersonic tip-cone flow boundary layer under slow acoustic disturbances, fast acoustic disturbances, and vortex wave.
From (1), on the solid surface where y [right arrow] 0, the viscosity coefficient of water molecule is infinity, and the water molecules would stand still, which is consistent with the classical boundary layer theory without slip conditions.
Even though the temperature of the overall mass of water may remain low, the invisible boundary layer and its temperature gradient surrounding the extrudate restrict heat transfer.
All five blowers are connected to the same compressor, with a valve before each blower unit to allow for tuning of the pressure in each individual settling chamber and thereby the blowing speed and momentum injected into the boundary layer.
It is noticed that the exact solutions in boundary layer flow problems through similarity transformations are very few.
It was concluded that velocity profiles and microrotation profiles are strongly influenced by the magnetic field in the boundary layer, which decreases with an increase in the magnitude of magnetic parameter.
The "boundary layer" as a concept is first revealed as a physics phenomenon.
This work examines the MHD mixed convection boundary layer flow through porous media due to porous non-linearly shrinking surface.

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