1.

Air at 20∘C forms a boundary layer near a solid wall in which velocity distribution is given by:u=u0sin(πy2δ)The boundary layer thickness is 7 mm and the peak velocity is 9 m/sec. What will be the shear stress in the boundary layer at y = 3.5 mm ? (μair,20∗=1.81×10−5)

Answer»

Air at 20C forms a boundary layer near a solid wall in which velocity distribution is given by:

u=u0sin(πy2δ)

The boundary layer thickness is 7 mm and the peak velocity is 9 m/sec. What will be the shear stress in the boundary layer at y = 3.5 mm ? (μair,20=1.81×105)



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