Problem 1: The big outer cylinder shell is fixed and the small inner cylinder is moving with speed U,(t). For fixed coordinate system x-o-y, find the solid surface boundary condition for the outer cylinder shell and the inter cylinder at time t.

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Problem 1: The big outer cylinder shell is fixed and the
small inner cylinder is moving with speed U₂(t). For
fixed coordinate system x-0-y, find the solid surface
boundary condition for the outer cylinder shell and the
inter cylinder at time t
Problem 2: For 2-Dimeninonal incompressible ideal fluid
flow in potential force field. Proof that aw²/ot + V.
(w²U) = 0, w is the vorticity
b
IF
0
To
U₂(1)
75
Transcribed Image Text:Problem 1: The big outer cylinder shell is fixed and the small inner cylinder is moving with speed U₂(t). For fixed coordinate system x-0-y, find the solid surface boundary condition for the outer cylinder shell and the inter cylinder at time t Problem 2: For 2-Dimeninonal incompressible ideal fluid flow in potential force field. Proof that aw²/ot + V. (w²U) = 0, w is the vorticity b IF 0 To U₂(1) 75
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