2012 Fiscal Year Final Research Report
A front-tracking method for fluid interfaces in high-speed compressible flows
| Project/Area Number |
23760079
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Engineering fundamentals
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | シミュレーション工学 |
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| Research Abstract |
A front tracking method for compressible multi-fluid flows is presented where marker points are used both for tracking fluid interfaces and also for constructing the Riemann problem on the interfaces. The Riemann problem between two fluid phases (defined in the interface normal direction) is solved using the exact Riemann solver on the maker points. The solutions are projected onto fixed grid points and then extrapolated into the corresponding ghost fluid regions, as in the ghost fluid method. The proposed procedures are designed to be consistent in any dimensions and to be simple to implement. Several multi-fluid problems, including the breakup of a water cylinder induced by the passage of a shock wave, were computed in order to demonstrate the capability of the new method.
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