密度锁栅格结构对分层稳定特性影响  

Effect of Grid on Characteristics of Stratification Stability in Density Lock

作　　者：王升飞 阎昌琪[1] 谷海峰[1] 

机构地区：[1]哈尔滨工程大学核科学与技术学院,哈尔滨150001

出　　处：《核动力工程》2011年第2期120-123,共4页Nuclear Power Engineering

基　　金：国家自然科学基金资助项目(50776022)

摘　　要：对密度锁内流场进行理论分析和实验观察,研究了栅格结构对密度锁分层稳定特性的影响。结果表明:在无分层时,密度锁内为涡旋流动;有分层时,涡旋被限制在分层上方,涡旋与分层相互作用,直至达到平衡;无栅格时,密度锁存在多个平衡点,分层容易从一个平衡点过渡到下个平衡点,很难稳定;有栅格时,分层能较快地达到平衡点,且由于栅格增强了能量耗散,分层界面更靠上。The research of effect of grid on stratification stability in density lock is carried out,through the theoretical analysis and experimental observation on the flow field in density lock.The results showed that,the flow in density lock is eddy flow;eddy flow is limited to the top of stratification when the stratification exists;the eddy and stratification interacted with each other until equilibrium,there are more than one equilib-rium points in density lock without grid,the stratification is hard to stabilize because it will transit to next equilibrium point easily,but it easy to reach stable with the grid,and the stratification interface will higher with grid than without grid because the grid enhanced the energy dissipation.

关 键 词：密度锁 分层稳定性 栅格结构 

分 类 号：TL364[核科学技术—核技术及应用]