在Matlab中画流函数

uperrua

Matlab算例：
, ^# t& U! \1 B  u1 i3 A( Bclear all;
- g% x: W+ `; a' T5 U+ Zclc;
- r- _6 J+ t8 V%%
e = 2; g = 1;
[x,y] = meshgrid(0:20,0:15);  % This makes regular grid
u = e*x-g*y;                  % Linear velocity field
5 ~% ], X6 ]' Zv = g*x-e*y;
[phi,psi] = flowfun(u,v);  % Here comes the potential and streamfun.
: D2 r5 ~1 [0 x( T6 Z; _%
2 b" g7 _/ p+ P1 k$ K/ \contour(phi,20,'--r','Displayname','phi')   % Contours of potential
4 B" i5 P5 g4 R8 s# F0 R8 B, fhold on
9 |+ U$ z1 J! Econtour(psi,20,'-g','Displayname','psi')    % Contours of streamfunction
* g& M: k9 |9 q- m  lquiver(x,y,u,v,'Displayname','velocity')         % Now superimpose the velocity field
) M3 l: C, A, k+ v3 b4 M2 A3 o% |- J% alegend show;
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yin123

在Matlab中画流函数