当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2015年
1期
205-208
,共4页
上下坡管道%密度差%边界层区域%数值模拟
上下坡管道%密度差%邊界層區域%數值模擬
상하파관도%밀도차%변계층구역%수치모의
Uphill and downhill pipe%Density difference%Boundary layer region%Numerical simulation
针对成品油流经上、下坡管道时，对同种汽油与不同密度的柴油进行顺序输送的混油问题，借助于 VOF 模型，建立三维流动模型进行数值计算。研究输送顺序、流速、密度、管长对成品油管壁边界层区域混油的影响。研究结果表明：对于上坡输油管道前行柴油时柴油密度越小、速度越大有助于减少管壁处边界层区域的混油量；对于下坡输油管道前行汽油时柴油密度越小、速度越大有助于减少管壁处边界层区域的混油量；和上坡时相比下坡前行汽油时更助于减少管壁处边界层区域的混油量。
針對成品油流經上、下坡管道時，對同種汽油與不同密度的柴油進行順序輸送的混油問題，藉助于 VOF 模型，建立三維流動模型進行數值計算。研究輸送順序、流速、密度、管長對成品油管壁邊界層區域混油的影響。研究結果錶明：對于上坡輸油管道前行柴油時柴油密度越小、速度越大有助于減少管壁處邊界層區域的混油量；對于下坡輸油管道前行汽油時柴油密度越小、速度越大有助于減少管壁處邊界層區域的混油量；和上坡時相比下坡前行汽油時更助于減少管壁處邊界層區域的混油量。
침대성품유류경상、하파관도시，대동충기유여불동밀도적시유진행순서수송적혼유문제，차조우 VOF 모형，건립삼유류동모형진행수치계산。연구수송순서、류속、밀도、관장대성품유관벽변계층구역혼유적영향。연구결과표명：대우상파수유관도전행시유시시유밀도월소、속도월대유조우감소관벽처변계층구역적혼유량；대우하파수유관도전행기유시시유밀도월소、속도월대유조우감소관벽처변계층구역적혼유량；화상파시상비하파전행기유시경조우감소관벽처변계층구역적혼유량。
Aimed at the problem of contaminated oil in batch transportation of the same gasoline and diesel with different density during product oil flowing in the downhill and uphill pipe, with the help of VOF model, the three-dimensional flow model was established, and numerical calculation was carried out. Influence of different sequence, flow velocity, density, pipe range on boundary layer region contaminated oil was investigated. The results show that: for forward diesel in the uphill pipeline,the lower density and the greater speed of diesel,the lower the mixed oil volume of tube boundary layer region; for forward gasoline in the downhill pipeline,the lower density and the greater speed of diesel,the lower the mixed oil volume of tube boundary layer region,and compared with the first condition,its effect is more obvious.
