求前辈指点迷津,感觉椭流线表达式有问题,又不知道哪里不对 7r,h[9~e
C.Ty\@U
程序如下 nht?58
W5_aS2$
clearclc 1'Y7h;\~\
h=1000;N=100; 0` \!O(jJ
R=100;for i=2:101 C|hD^m
theata(i)=asin(sqrt((i-1)/N));end N^;rLrm*
theata(1)=0;for i=1:101 O{w'i|
% r(i)=R*sqrt((i-1)/N);r(i)=sqrt(R^2/i) Tj
v)jD
end% r(1)=0; u#r[JF9LP
a=zeros(101,1);c=zeros(101,1); UK!PMkX
x=zeros(101,1);y=zeros(101,1); cH>3|B*y
a(1)=550;x(1)=-50; N~t4qlC/
y(1)=0; '&42E[0P
Bq4^nDK
for i=2:100 k=2*a(i-1); $zv&MD!&h
F=[h,r(i-1)/2-r(i)/2]; XY=((k^2-norm(F)^2)/(2*k-2*norm(F)*cos(pi-theata(i))))*[cos(pi-theata(i)),sin(theata(i))]; 7ts`uI<E@7
x(i)=XY(1); y(i)=XY(2); j'M=+
FX=F-XY; a(i)=(norm(FX)+norm(XY))/2; :j}4F
i x(i) |h(05Kbk
y(i)end .qAlPe L:
plot(x,y)