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May 25, 2017, 15:22
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Help! Trying to understand lax wendroff
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#1 |
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New Member
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Hi,
So I am a student taking Intro to CFD and I am currently working on an assignment to understand Lax Wendroff method. I have attached the problem and the work I have done. I am not looking for someone to do the work for me but to help me in the right direction. Thank you in advance to all who read and help me on this FUN journey . |
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May 25, 2017, 15:29
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#2 |
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Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
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May 25, 2017, 16:19
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#3 |
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The problem I am currently having is that I do not understand how to go from what I have as Eq C to getting the truncation error and nothing seems to show why the truncation error is O[deltaX^2, deltaT^2]
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May 25, 2017, 16:26
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#4 | |
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Senior Member
Filippo Maria Denaro
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Quote:
Just start from the discretized LW equation, use the Taylor expansion in time and space to rewrite the function in (x,t). All the terms appearing out of the original PDE represent the local truncation error. In the book you find the section for the local truncation error of a scheme. |
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