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 {FrHm
M$DwQ}Z
程序如下 Py(wT%w
2nOe^X!*
clearclc )AZ`R8-A
h=1000;N=100; oZ|{J
R=100;for i=2:101 uhPIV\
theata(i)=asin(sqrt((i-1)/N));end ?,A8 fR
theata(1)=0;for i=1:101 L>|A6S#y8/
% r(i)=R*sqrt((i-1)/N);r(i)=sqrt(R^2/i) zwF7DnW<<
end% r(1)=0; oW` *FD
a=zeros(101,1);c=zeros(101,1); +LvZ87O^~
x=zeros(101,1);y=zeros(101,1); pJ<)intcbE
a(1)=550;x(1)=-50; qCv}+d)
y(1)=0; M$E8:
*
S+7BdP
for i=2:100 k=2*a(i-1); lW@:q04Z$
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))]; yDl5t-0`
x(i)=XY(1); y(i)=XY(2); 3M5=@Fwkr
FX=F-XY; a(i)=(norm(FX)+norm(XY))/2; 5wVi{P5+
i x(i) #oS
y(i)end `K ~>!d_
plot(x,y)