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4. A 2D viscous flow is given in polar coordinates by vr=0v=rC[1exp(4tr2)] where C is a constant and is the kinematic viscosity. (a) Compute the
4. A 2D viscous flow is given in polar coordinates by vr=0v=rC[1exp(4tr2)] where C is a constant and is the kinematic viscosity. (a) Compute the z-component of vorticity z(r,t) and plot representative velocity and vorticity profiles for various times (i.e., pick a few representative time values t and plot v(r,t) and z(r,t) (b) Determine the circulation (R,t) around a closed curve that is a circle with radius R centered at the origin. Rewrite the azimuthal velocity v by replacing C (using appropriate mathematical manipulations) with the parameter 0(R=0,t)
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