离心级联水力学的扰动分析  

Excursion analysis of centrifuge cascades hydraulics

作　　者：李锦[1] 曾实[1] 

机构地区：[1]清华大学工程物理系,北京100084

出　　处：《清华大学学报（自然科学版）》2007年第6期859-862,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(10375033)

摘　　要：为了提高离心级联的分离效果,研究了各级机器参数扰动时所引起的流体状态偏移。在求解离心级联水力学静态特征根的基础上,以扰动级为界,通过对级联贫化、浓化部分分段求解,得到了水力学流体状态偏移的解析解,并用数值实验加以验证。结果表明:对于小扰动情况下的离心级联,用解析与数值2种方法得到的流体状态偏移曲线十分相似,主静态特征根Z2对级联中压强和流量的偏移起主导作用。因此,该解析解可以为实际离心级联参数的调整和设计提供参考依据。The hydraulic excursions caused by the parameters fluctuation of centrifuges in a cascade was investigated to improve the separation performance of gas centrifuge cascades. Analytical solutions are obtained based on the solution of the static characteristic roots of the centrifuge cascade hydraulic equations. Comparisons with numerical solutions show that the analytical results for the parameter variations due to excursion agreed well with the numerical results. For small fluctuations in the centrifuge cascades, the pressures and the flow rates are strongly related to the main static characteristic root Z2. Thus, the analytical solutions can be used as a reference for adjusting and designing cascades.

关 键 词：离心级联 静态特征根 流体状态 偏移曲线 

分 类 号：TL252.01[核科学技术—核燃料循环与材料]