Changes between Version 32 and Version 33 of u/ehansen/buildcode


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Timestamp:
11/16/11 13:51:36 (13 years ago)
Author:
ehansen
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  • u/ehansen/buildcode

    v32 v33  
    172172Test 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.
    173173
    174 Test 1 was also run with the MUSCL-Hancock scheme with the HLLC solver.  A comparison with the first order plots shows that the MUSCL-Hancock method does indeed give more accurate results.
     174The tests were also run with the MUSCL-Hancock scheme with the HLLC solver.  A comparison with the first order plots for test 1 shows that the MUSCL-Hancock method does indeed give more accurate results. The MUSCL-Hancock scheme produced similar results for the other tests except for test 2.  For some reason the MUSCL-Hancock scheme cannot handle the two rarefaction problem no matter what the CFL, slope limiter, etc.
    175175
    176176For all the plots, the numerical results (points) are alongside the exact solution (line). 
     
    214214|| [[Image(hllc_test1_intenergy.png, width=500)]] || [[Image(muscl_test1_intenergy.png, width=500)]] ||
    215215[[CollapsibleEnd]]
     216[[CollapsibleStart(Test 2 (MUSCL-Hancock)]]
     217|| [[Image(muscl_test2_density.png, width=500)]] || [[Image(muscl_test2_velocity.png, width=500)]] ||
     218|| [[Image(muscl_test2_pressure.png, width=500)]] || [[Image(muscl_test2_intenergy.png, width=500)]] ||
     219[[CollapsibleEnd]]