Analytical and numerical results for the dynamics of capillary pumped loops and loop heat pipes subjected to high amplitude heat load steps
Analytical and numerical results for the dynamics of capillary pumped loops and loop heat pipes subjected to high amplitude heat load steps
复制标题
毛细泵环路和环路热管在高振幅热载荷阶跃下的动力学分析和数值结果
DOI：
10.1016/j.applthermaleng.2017.02.065
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发表时间：
2017
影响因子：
6.4
通讯作者：
Ahmed Kaled
中科院分区：
文献类型：
--
作者：
S. Dutour;Ahmed Kaled
提出了一些分析和数值结果，以阐明哪些是导致 CPL 和 LHP 在高振幅热载荷阶跃下的时间响应的主要参数。这项研究实际上侧重于液体流量过冲的估计，因为该峰值可能很大，以至于可能导致回路故障。分析进展假设最早建立 CPL/LHP 瞬态的蒸发器-冷凝器耦合是基于二阶线性系统。尽管分析结果的可靠性取决于液体管线中的雷诺数和摩擦系数，但通过一些数据和研究不同回路配置的一些模拟观察到了令人满意的一致性。由于它们提供了有关环路瞬态的重要信息，因此这些理论结果对于瞬态数值开发以及适合要求苛刻的功率循环的环路设计非常宝贵。
Some analytical and numerical results were presented in order to clarify which are the main parameters leading the time response of CPL and LHP subjected to high amplitude heat load steps. This study actually focused on the estimation of the liquid flow rate overshoot as this peak value can be so large that it may lead to loop failures. The analytical developments assumed that the evaporator-condenser coupling which founds the CPL/LHP transient at the earliest times is based on a second-order linear system. Satisfactory agreement was observed with some data and with some simulations investigating different loop configurations even though the reliability of the analytical results depends on the reynolds number and the friction factor in the liquid line. As they provided essential information on the loop transient, these theoretical results are precious for transient numerical developments and also for the design of loops that are suitable for demanding power cycles.