孔板厚度对平衡型节流器件流场特性影响  

Effect of the plate thickness on flow characteristics of balanced throttle plate

作　　者：刘海飞[1] 赵忠明[1] 郝春哲 张家源 Liu Haifei, Zhao Zhongming, Hao Chunzhe, Zhang Jiayuan(Beijing Institude of Space Launch Technology, Beijing 100076, Chin)

机构地区：[1]北京航天发射技术研究所,北京100076

出　　处：《低温与超导》2018年第3期6-7,42,共3页Cryogenics and Superconductivity

基　　金：国家自然科学基金项目(11602014)资助

摘　　要：平衡型节流器件是一种新型非标准节流装置,在流体流量测量上具有一定的优势。采用数值模拟方法,分析了孔板厚度对平衡型节流器件流场特性的影响。结果表明:节流件的孔板厚度存在优选值,随着孔板厚度的增大,流出系数逐渐增大且趋于定值,而压降损失逐渐减小且最终也趋于定值。As a new non -standard throttle device, the balanced throttle plate has some advantages in the measurement of fluid flow. In this paper, numerical simulation was applied to study the flow characteristic of cryogenic fluids in the balanced throttle plate. The results indicate that the plate thickness of the throttle device has a preferred value. With the increase of the orifice plate thickness, the discharge coefficient increases gradually and tends to a constant value, however, the pressure loss decreases gradually and also tends to a constant value.

关 键 词：平衡型节流器件 孔板厚度 流出系数 数值模拟 

分 类 号：V554.4[航空宇航科学与技术—人机与环境工程]