Changes between Version 58 and Version 59 of u/erica/RoeSolver


Ignore:
Timestamp:
05/17/13 12:40:35 (11 years ago)
Author:
Erica Kaminski
Comment:

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  • u/erica/RoeSolver

    v58 v59  
    153153[[Image(waveStructures.png, 50%)]]
    154154
    155 Here is an example of the Roe solver poorly computing the flow inside of a left rarefaction. As you can see, it computes the solution as if there was a discontinuity inside of the wave, not a continuous fan.
     155The waves are as follows: (a) left supersonic shock, (b) right supersonic shock, (c) left supersonic rarefaction, (d) right supersonic rarefaction, (e) transonic or sonic rarefaction.
     156
     157Here is an example of the Roe solver poorly computing the flow inside of a left sonic rarefaction. As you can see, it computes the solution as if there was a discontinuity inside of the wave, not a continuous fan. Note the sonic point inside of the wave is where the eigenvalue for the left wave, Lambda1 = u-a = 0. Throughout the wave, the eigenvalue should change sign through this sonic point.
    156158
    157159[[Image(Test1Roe.png, 35%)]]