Derivation of Osher’s Riemann Solver

All numerical fluxes are functions of the left and right states (and possibly dt and dx). Learn how those famous fluxes can be implemented, or just use them to see how they work for various shock-tube problems. Included are Lax-Friedrichs, Richtmyer, MacCormack, Steger-Warming, Van Leer, AUSM, Zha-Bilgen, Godunov, Osher, Roe, Rusanov, HLL, HLLL, AUFS flux functions. Free Download PDF (Derivation) + Code (F90) Free Download Code +...

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Solving a Gasoline Direct Injection Engine Simulation

A three dimensional single cylinder CFD simulation, of a 4-stroke spray guided Gasoline Direct Injection(GDI) Spark Ignition (SI) engine, is performed in this tutorial. Detailed boundary conditions are shown in Figure 4.1: Problem Schematic (p. 173). Engine simulation is started from Intake valve opening (IVO) and fuel is injected during the intake stroke. Homogeneous fuel air mixture is compressed and spark ignited 15° before compression Top Dead Center (TDC).[1] [1] Download Tutorial Coming Soon …. —————————————————— [1]...

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