Development Of Boundary Layer
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Development of Boundary Layer
Rex = Ux / v
Where U = Free stream velocity
x = Distance from leading edge
v = Kinematics viscosity
• The boundary layer starts at the leading edge of the solid boundary and the boundary layer thickness increase with the distance x along the surface.
• The most important changes take place in the nature of flow as the boundary layer grows. This is known as development as boundary layer.
• The boundary layers begin at the leading edge of the plate, where the flow is laminar and velocity profile is approximately parabolic.
• Due to the increase in the thickness of boundary layer, the laminar layer becomes unstable and the motion within it becomes disturbed.
• The irregularities of flow developed into turbulence, and the thickness fo the layer increases more rapidly.
• The short length over which the nature of flow changes from laminar to turbulent is called as Transition zone.
• The velocity in turbulence zone is logarithmic
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Where U = Free stream velocity
x = Distance from leading edge
v = Kinematics viscosity
Boundary layer on long, flat surface with sharp leading edge
• The boundary layer starts at the leading edge of the solid boundary and the boundary layer thickness increase with the distance x along the surface.
• The most important changes take place in the nature of flow as the boundary layer grows. This is known as development as boundary layer.
• The boundary layers begin at the leading edge of the plate, where the flow is laminar and velocity profile is approximately parabolic.
• Due to the increase in the thickness of boundary layer, the laminar layer becomes unstable and the motion within it becomes disturbed.
• The irregularities of flow developed into turbulence, and the thickness fo the layer increases more rapidly.
• The short length over which the nature of flow changes from laminar to turbulent is called as Transition zone.
• The velocity in turbulence zone is logarithmic
For more help in Development of Boundary Layer click the button below to submit your homework assignment