Changes between Version 25 and Version 26 of u/ehansen/buildcode


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Timestamp:
11/03/11 15:17:08 (13 years ago)
Author:
ehansen
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  • u/ehansen/buildcode

    v25 v26  
    149149Test 1 was also run with the HLLC solver. The density plot was made to compare it to the results of the exact solver.  Notice that the HLLC solver actually does a better job of resolving the left rarefaction.  The exact solution has a much more noticeable entropy "glitch".  This is what we call that gap inside the left rarefaction.
    150150
    151 Test 1 was also run with the Roe solver in two different ways.  First as a basic Roe solver, and second with an entropy fix.  This entropy fix is required for transonic rarefactions, which is the case for the left rarefaction in Test 1. You can see that without this entropy fix, the gap inside that left rarefaction is very large and completely inaccurate.
     151Test 1 was also run with the Roe solver in two different ways.  First as a "barebones" Roe solver, and second with an entropy fix.  This entropy fix is required for transonic rarefactions, which is the case for the left rarefaction in Test 1. You can see that without this entropy fix, the gap inside that left rarefaction is very large and completely inaccurate.
    152152
    153153For all the plots, the numerical results (points) are alongside the exact solution (line). 
     
    180180|| [[Image(hllc_test1_density.png, width=500)]] || [[Image(test1_density.png, width=500)]] ||
    181181[[CollpasibleEnd]]
    182 [[CollapsibleStart(Test 1 (Roe without entropy fix vs. Roe with entropy fix)]]
     182[[CollapsibleStart(Test 1 (Roe without entropy fix vs. Roe with entropy fix))]]
    183183||= Roe without entropy fix =||= Roe with entropy fix =||
    184184|| [[Image(roe_nofix_test1_density.png, width=500)]] || [[Image(roe_withfix_test1_density.png, width=500)]] ||