Finding the mean velocity by interpolation.

Hi all. I really need some help. I have to solve linear disturbance equations by using Chebyshev polynomials. Now the problem is how to the interpolation.

I have solve the nonlinear ODE system by using MAPLE, so this means that I already have the mean flow (U,V,W) at some points of the maple solver which is between 0 to 20. What I need to have is the mean flow at the same points of the mapped Gauss-Lobatto distribution then do a linear interpolation between the mean flow at the points I have from maple and the grip points used in the stability code (Chebyshev code). So how to do the interpolation by using interp1 for instance?

Thank you in advance.

[dpb]

I think you answered your own question... " by using interp1".

What's the specific problem you've run into in doing so?

[Dayana Nisa]

Yes, by using interp1. But I dont have any idea on how to use that. Im solving stability problem in rotating disk boundary layer. This is the file. As you can see in the code, there is U,V and W. I already solve the mean velocity from eta=1 to eta=20 for U,V and W. But I dont know how to assign that in Chebyshev code.

[Walter Roberson]

Your code did not get attached.