内通道液冷镜湍流状态下弯道流阻影响因素分析  

Influence Factors of Bend Flow Resistance in Turbulent Flow of Inner Channel Liquid Cooled Mirror

作　　者：孟令武 邵帅[1] 乔健 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京100049 [3]佛山科学技术学院机电工程学院,广东佛山528000

出　　处：《光学学报》2018年第2期204-210,共7页Acta Optica Sinica

基　　金：中国科学院长春光学精密机械与物理研究所三期创新工程资助项目(09J52SCN90)

摘　　要：采用有限体积方法,研究了矩形内通道直角弯道流场及压力损失系数,主要分析通道尺寸、冷却液流速、冷却液浓度等因素对局部流场和压力损失系数的影响规律。结果表明:压力损失系数随流道宽度a和流道高度b的增大而逐渐减小,随流道间距e先下降后略微上升;弯道宽度c的变化会引起弯道局部流场和压力损失系数发生变化;液流流速越大,压力损失系数越小;冷却液浓度越大,压力损失系数越大。The flow field and pressure loss coefficient of rectangular inner channel at right-angled bend are studied by the finite volume method.Specifically,the influence of channel size,coolant flow rate and coolant volume fraction on the local flow field and pressure loss coefficient is analyzed.The result shows that the pressure loss coefficient decreases gradually with the increases of the channel width a and the channel height b,and decreases and then increases slightly with the channel interval e.The change of bend width c causes the change of local flow field in bend and the pressure loss coefficient.The greater the flow velocity is,the smaller the pressure loss coefficient is.The greater the volume fraction of the cooling fluid is,the larger the pressure loss coefficient is.

关 键 词：激光光学 强激光 液冷镜 流道结构 压力损失系数 计算流体力学 

分 类 号：TN249[电子电信—物理电子学]