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海雷jiang銀蟲 (初入文壇)
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[交流]
fluent UDF程序存在問題 已有3人參與
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![]() ![]() ![]() ![]() ![]() #define WALL_NUMBER1 4 /*修改壁面的 ID,由壁面條件面板中讀取*/c_face_loop(cell, mixer, n) { fa = C_FACE(cell, mixer, n); //獲取面指針 tf = C_FACE_THREAD(cell, mixer, n); //獲取該面所在thread的指針 if (THREAD_ID(tf) == WALL_NUMBER1) //判斷是否為貼近壁面的網(wǎng)格????三維網(wǎng)格應(yīng)該怎么判斷是否貼近壁面 { if (C_VOF(cell, sec_th) == 1.) //如果充滿液體,則蒸汽向液體質(zhì)量傳輸為0 mass_dot = 0.0; //質(zhì)量源項為0 else //不充滿液體,則蒸汽進行凝結(jié) { C_CENTROID(cell_center, cell, mixer); F_CENTROID(face_center, fa, tf); NV_VV(a, = , cell_center, -, face_center); distance = NV_MAG(a); p_op = RP_Get_Real("operating-pressure" ;p = p_op + C_P(cell, first); cell_vapor_pressure = C_YI(cell, first, index_evap_primary) / vapor_molecular /(C_YI(cell, first, index_evap_primary) / vapor_molecular + (1 - C_YI(cell, first, index_evap_primary)) / air_molecular)*p; wall_temper = F_T(fa, tf); wall_pressure = psat_vapor(wall_temper); wall_mass_fraction = wall_pressure*vapor_molecular /(wall_pressure*vapor_molecular + (standard_pressure - wall_pressure)*air_molecular); diffusivity=standard_diffusivity*standard_pressure/p*pow(standard_temper/C_T(c,t),1.81); if (cell_vapor_pressure / p >= wall_pressure / standard_pressure)/**發(fā)生冷凝**/ { area_density = 1 / (2 * distance); mass_transfer_coeff = C_YI(cell, first, index_evap_primary)*C_R(cell,first)*diffusivity / distance*(C_YI(cell, first,index_evap_primary) - wall_mass_fraction) / (1 -wall_mass_fraction); mass_dot = -mass_transfer_coeff*area_density; dS[eqn] = -C_YI(cell, first, index_evap_primary)*C_R(cell, first)*diffusivity /distance*area_density; } } } } 這段程序是水蒸氣凝結(jié)的udf,首先判斷網(wǎng)格是不是壁面網(wǎng)格,然后判斷網(wǎng)格內(nèi)是否充滿液體,如果是壁面網(wǎng)格且未充滿液體,則通過壓力來判斷網(wǎng)格內(nèi)水蒸氣是否發(fā)生冷凝。 想請教各位大神,該段程序是否存在什么明顯的問題?模擬的是三維網(wǎng)格,程序中判斷網(wǎng)格是否為壁面網(wǎng)格的語句是對的嗎? |

新蟲 (小有名氣)
新蟲 (小有名氣)
新蟲 (初入文壇)
新蟲 (小有名氣)
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