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 BqH]-'1G
SDYv(^ f ,
程序如下 o.7{O,v
F$MX,,4U
clearclc 3yA2WW
h=1000;N=100; bZ 443SG
R=100;for i=2:101 6!q#x[A
theata(i)=asin(sqrt((i-1)/N));end iv&v8;B
theata(1)=0;for i=1:101 =f1B,%7G+5
% r(i)=R*sqrt((i-1)/N);r(i)=sqrt(R^2/i) \or G63T:
end% r(1)=0; jrMe G.e=D
a=zeros(101,1);c=zeros(101,1); LF*&(NC
x=zeros(101,1);y=zeros(101,1); )ev<7g9*q
a(1)=550;x(1)=-50; }
JiSmi6o
y(1)=0; ~9\zWRh
v~|?3/{Q
for i=2:100 k=2*a(i-1); dy>!KO
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))]; )G1P^WV4
x(i)=XY(1); y(i)=XY(2); 0?0Jz
FX=F-XY; a(i)=(norm(FX)+norm(XY))/2; v2+!1r7@
i x(i) ihCIh6
y(i)end '%saL >0
plot(x,y)