Plot the streamlines and pressure for flow around a rotating cylinder

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erq
erq 2013 年 12 月 13 日
回答済み: Simon 2013 年 12 月 13 日
r0=1,U=1,p=1,0<theta<2pi,r0<r<3r0, generate gamma=0, gamma=-2pir0U.
LAMBDA = 1.; Pinf = 1.; U = 1.;
th = linspace(0,2*pi,100); r = linspace(0.1,1,100); [TH,R] = meshgrid(th,r); [X,Y] = pol2cart(TH,R);
PSI = -LAMBDA.*sin(TH)./R; VR = -LAMBDA./(R.^2).*cos(TH); VTH = -LAMBDA./(R.^2).*sin(TH); P = Pinf + U^2/2 - (VR.^2 + VTH.^2)/2;
figure contourf(X,Y,P,20,'LineColor','none'); hold on; contour(X,Y,PSI,20,'-k.','LineWidth',1); axis equal; xlabel('X'); ylabel('Y');

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回答 (1 件)

Simon
Simon 2013 年 12 月 13 日
Hi!
Please use the code formatting for pasting code, thanks!
And what is the question? What did you do? Where does the code come from? What does it calculate?

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