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3Â¥2015-12-21 14:40:33
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4Â¥2015-12-21 23:28:28
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vof¸ñʽÖУ¬ÎÈ̬¼ÆËãÖ»ÄÜʹÓÃÒþ¸ñʽ£¬¶øgeo-reconÊÇÏÔ¸ñʽ£¬ËùÒÔ²»ÄÜÑ¡ FluentÖÐÓÐDegassing±ß½çÌõ¼þ£¬¿ÉÒÔÉèÖÃijÏàÁ÷Ìåµ¥¶ÀÁ÷³ö£¬µ«Ö»ÔÚeularianÁ½ÏàÆøÒºÁ÷Ä£ÐÍÀï¿ÉÒÔÖ±½ÓʹÓà ¶ÔVOFÁ½ÏàÁ÷£¬ÒªÊ¹ÓÃUDF£¬ÔÚhelpÀïµÄÀý×ÓÌùÔÚÏÂÃæ£º 2.3.24.4. Example 2 - Degassing Boundary Condition The following UDFs are used to define the bottom surface as a standard velocity inlet for the gas (primary) phase. The inlet VOF of the droplet phase is 0 and a negative source term for secondary phase mass conservation is set for the layer of cells next to the outlet. The source removes all secondary phase mass in the cell during one time step. The recoil force due to the mass source is also calculated. /*******************************************************************/ This UDF is an implementation of the degassing boundary condition *******************************************************************/ #include "udf.h" #include "sg.h" #include "sg_mphase.h" #include "flow.h" #include "mem.h" #include "metric.h" DEFINE_SOURCE(degassing_source, cell, thread, dS, eqn) { real source; Thread *tm = THREAD_SUPER_THREAD(thread); source = -C_R(cell,thread)*C_VOF(cell,thread)/CURRENT_TIMESTEP ; C_UDMI(cell,tm,0) = source; dS[eqn] = -C_R(cell,thread)/CURRENT_TIMESTEP; return source; } DEFINE_SOURCE(x_prim_recoil, cell, tp, dS, eqn) { real source; Thread *tm = THREAD_SUPER_THREAD(tp); Thread *ts; ts = THREAD_SUB_THREAD(tm,1); source = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP*C_U(cell,tp); dS[eqn] =-C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP; return source; } DEFINE_SOURCE(x_sec_recoil, cell, ts, dS, eqn) { real source; Thread *tm = THREAD_SUPER_THREAD(ts); source = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP*C_U(cell,ts); dS[eqn] = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP; return source; } DEFINE_SOURCE(y_prim_recoil, cell, tp, dS, eqn) { real source; Thread *tm = THREAD_SUPER_THREAD(tp); Thread *ts; ts = THREAD_SUB_THREAD(tm,1); source = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP*C_V(cell,tp); dS[eqn] =-C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP; return source; } DEFINE_SOURCE(y_sec_recoil, cell, ts, dS, eqn) { real source; Thread *tm = THREAD_SUPER_THREAD(ts); source = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP*C_V(cell,ts); dS[eqn] = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP; return source; } DEFINE_SOURCE(z_prim_recoil, cell, tp, dS, eqn) { real source; Thread *tm = THREAD_SUPER_THREAD(tp); Thread *ts; ts = THREAD_SUB_THREAD(tm,1); source = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP*C_W(cell,tp); dS[eqn] =-C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP; return source; } DEFINE_SOURCE(z_sec_recoil, cell, ts, dS, eqn) { real source; Thread *tm = THREAD_SUPER_THREAD(ts); source = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP*C_W(cell,ts); dS[eqn] = -C_R(cell,ts)*C_VOF(cell,ts)/CURRENT_TIMESTEP; return source; } |
5Â¥2015-12-22 09:40:00













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