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Student Support Forum: 'NDSolve Boundary Condition Help - Ivone' topicStudent Support Forum > General > "NDSolve Boundary Condition Help - Ivone"

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Ari
06/24/09 6:42pm

I have a PDE system of 24 functions(denoted here as y1,y2...) with two independent variables, t and x.

My code essentially is the following (I may have mistyped the differential equations, but the problem here is the boundary conditions)-

NDSolve[{
D[y1[t,x],x]+D[y1[t,x],t]=F1,
(repeats with all 23 other yi's).

y1[t,0]==1,
y2[t,0]==2,
y3[t,0]==3,

y1[0,x]==0,
y2p0,x]==0,
(repeats with all 22 of the other Yi's).
}, {y1,y2...}, {t,0,1},{x,0,1}]

My problem is that it constantly gives the error below:

NDSolve::ivone: Boundary values may only be specified for one independent variable. Initial values may only be specified at one value of the other independent variable.

I'm confused what I'm violating here and I wasn't able to find much about this online.

If anyone could help me out I'd be very thankful.

Thank you.

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