openfoamの混相流solver interfoamのパラメータによる解の変化

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OpenFOAMの混相 solver interFoamのパラ メータによる解の変化 阪学学院基礎学研究科 修課程2 卓也 27OpenCAE勉強会@関西 2014/01/18

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  • 1. OpenFOAM solver interFoam 27OpenCAE@ 2014/01/18

2. interFoam Dam Break (Tutorial)/ solver 3. InterFoam InterFoamSystem/fvSolu?onPISO{nCorrectors3;nNonOrthogonalCorrectors0;nAlphaCorr1;nAlphaSubCycles2;cAlpha1;}nAlphaCorr; nAlphaSubCycles; cAlpha; C (0~2) f ff f ff f S Su S Su Cn max,min 0; 2;t t/nAlphaSubCycles () 4. Laplace A. Albadawi et al.(2013) Laplace p ((p.8) ) p = 1 R + 1 R' ! " # $ % & p = p0 in p out p0 in p out M. M. Francois et al., J. Comput. Phys., 213, 141-173 (2006). 5. Laplace pexact = 1 R + 1 R' ! " # $ % & = 2 p = p0 in p out p0 in p out DX=0.001m(Fine) =0.0005m(Coarse)0.05m0.05m0.01m 0.01N/m g1kg/m3 g10-5kg/(ms) l1000kg/m3 l10-3kg/(ms)gasliquid 0.1sec. (t=1x10-5sec.(Coarse)) (t=5x10-6sec.(Fine)) E0 E0 = p pexact pexact OpenFOAM-2.1.x 6. Laplace (VOF(Coarse)) (alpha=0.5) 7. Laplace (VOF(Fine)) (alpha=0.5) 8. Laplace CAlpha012VOF(Coarse)25.1725.2325.38VOF(Fine)19.3419.2919.05pexact = 1 R + 1 R' ! " # $ % & = 2 p = p0 in p out p0 in p out E0 E0 = p pexact pexact E0 9. Laplace (SCLSVOF(Coarse)) (alpha=0.5) 10. Laplace (SCLSVOF(Fine)) (alpha=0.5) 11. Laplace pexact = 1 R + 1 R' ! " # $ % & = 2 p = p0 in p out p0 in p out E0 E0 = p pexact pexact E0CAalpha012VOF(Coarse)25.1725.2325.38VOF(Fine)19.3419.2919.05SCLSVOF(Coarse)1.5570.17491.752SCLSVOF(Fine)1.4961.2100.9390 12. C 13. 1. M. M. Francois et al., J. Comput. Phys. 213 (2006) 141-173. 2. A. Albadawi et al., Int. J. Multiphase Flow 53 (2013) 11-28. 3. - , 2,