| The purpose of this work is to implement four additional inviscid flux methods in the U2NCLE solver being developed at Mississippi State University in hopes that they may provide benefits over the current options with respect to accuracy or robustness. These methods include both the Harten, Lax, Van Leer, Einfeldt (HLLE) and Harten, Lax, Van Leer - Contact (HLLC) methods as well as the Advection Upstream Splitting Method (AUSM) and its successor AUSM+. Several test cases were run with each new method and the methods currently available. The results showed that all were well suited for simple cases. In more complex cases, the AUSM family proved to be less robust and, in cases, failed to converge. The HLLE method showed excellent robustness qualities but overpredicted the viscous values in several cases. The HLLC method proved equally as accurate and robust as Roe's Method. |
