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 imL_lw^?
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程序如下 Zi$ziDz&
a~LC+8|JW
clearclc i8X`HbmN
h=1000;N=100; ~ A Qp|
R=100;for i=2:101 &NZfJs
theata(i)=asin(sqrt((i-1)/N));end ;$j7H&UNQj
theata(1)=0;for i=1:101 vEe NW
% r(i)=R*sqrt((i-1)/N);r(i)=sqrt(R^2/i) E4.SF|=x
end% r(1)=0; a l9.}
a=zeros(101,1);c=zeros(101,1); xG&SX#[2
x=zeros(101,1);y=zeros(101,1); R>@uY(>dJ
a(1)=550;x(1)=-50; U!5)5c}G
y(1)=0; dj6*6qX0'^
S]3Ev#>
for i=2:100 k=2*a(i-1); )U<Y0bZA!
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))]; ~|Y>:M+0Z
x(i)=XY(1); y(i)=XY(2); g+8hp@a
FX=F-XY; a(i)=(norm(FX)+norm(XY))/2; 9a$56GnW1
i x(i) g&/p*c_
y(i)end .S\&L-{
plot(x,y)