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Matlab算例：. F8 j E' ~, l/ H5 A6 N8 Y
clear all;
! i+ L, F, m9 ?7 mclc;2 U& ? q1 l" c# S
%%9 j5 |* A( }6 g1 k; |( [
e = 2; g = 1;! E$ ^0 C2 B) d1 E1 k: G
[x,y] = meshgrid(0:20,0:15); % This makes regular grid
& E" {# i7 D8 R2 au = e*x-g*y; % Linear velocity field' g$ F6 h! t# b- t" \2 ?# I, h
v = g*x-e*y;
+ E4 Q9 w. W, d0 ^0 ^0 y: q[phi,psi] = flowfun(u,v); % Here comes the potential and streamfun.
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2 o. R! O) q; O9 mcontour(phi,20,'--r','Displayname','phi') % Contours of potential) e& s' K0 R1 g- |3 R/ t
hold on
0 i' {" A. ?$ _7 { M$ o# dcontour(psi,20,'-g','Displayname','psi') % Contours of streamfunction
0 v! k2 x) b& H( Rquiver(x,y,u,v,'Displayname','velocity') % Now superimpose the velocity field
8 S+ c3 X4 L# U5 I' X3 Vlegend show;0 l ]2 C/ }! q& p0 r. Z2 G) A
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发表于 2020-4-29 10:45
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淘帖
支持！
反对！