I want to make the figure hanger look like the attached picture. The code is shown below.
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clc
L=3;% L=y fare away the the plate (boundary layer)
T=2;%Final time
maxk=500;%Number of time steps
dt=T/maxk;
n=50;%Number of space steps
dy=L/n;
diff=0.25;
b=diff*dt/(dy*dy);
%b=0.1;
%initial condition of velocity
for i=1:n+1
y(i)=(i-1)*dy;
u(1,1)=0;
end
%Boundary condition
for k=1:maxk+1
u(1,k)=1;
u(n+1,k)=0;
end
for k=1:maxk %time loop
for i=2:n %space loop
u(i,k+1) =u(i,k)+b*(u(i-1,k)+u(i+1,k)-2.*u(i,k));
end
end
%Ploting
figure(1)
%plot(y,u(:,1),'-',y,u(:,100),'-',y,u(:,300),'-',y,u(:,600),'-')
plot(y,u(:,50),'-',y,u(:,100),'-',y,u(:,200),'-',y,u(:,250),'-')
%legend('dt=50','dt=100','dt=200','dt=250')
title('Velocity in the boundary layer')
xlabel('y')
ylabel('velocity')
2 Kommentare
Antworten (1)
Walter Roberson
am 26 Aug. 2021
Instead of using plot() use surf(), with 'edgecolor', 'none', and with 'alphadata' set to a constant repeated the same size as u, and with AlphaDataMapping 'none' and with 'FaceAlpha', 'flat'
3 Kommentare
Walter Roberson
am 26 Aug. 2021
surf(x, y, u, 'edgecolor', 'none', 'AlphaDataMapping', 'none', 'FaceAlpha', 'flat', 'Alpha', 0.8 * ones(size(u)));
hold on
This would be in a loop in which you changed whatever it is you need to change, creating a new u matrix each time.
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