2012 Fiscal Year Final Research Report
Numerical Study on the Supercritical Water Flow Issuing from the Hydrothermal Vent in the Deep Sea
| Project/Area Number |
22740261
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 流体数値シミュレーション / 超臨界水 / 深海熱水 / 非定常非圧縮流れ / 複雑流れ / 熱対流 / 計算モデル |
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| Research Abstract |
A flow of the supercritical water heated geothermally from the hydrothermal vent in the deep sea was numerically studied. In order to directly simulate the flow whose temperature rapidly changed from the critical temperature to the low environmental temperature of the deep sea, the new equations were derived from the compressible Navier-Stokes equations. In addition, for the highly-unsteady-flow computation, a new hybrid upwind scheme was developed aimed at stabilizing the high-accuracy computation. The scheme was effective and the supercritical water flow issuing from the hydrothermal vent in the deep sea was simulated for the first time.
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