基于参数敏感度分析的管片散热器再设计方法

A redesign method based on parameter-sensitivity analysis for plate fin-and-tube radiators

摘要:

为定量的描述管片式散热器内部结构与散热性能的关系，以强化工程机械冷却系统散热器的散热能力来适应大负荷、高温等极端工况，提出了基于设计参数敏感度的管片式散热器再设计方法。通过强制对流换热理论对换热过程的分析以及风道特性的描述，建立了管片散热器设计参数与散热性能的数学模型，分析了不同的结构设计参数对散热性能影响的强弱，得出了各设计参数的敏感度系数，从而定量描述散热性能对于不同设计参数的敏感程度。该方法可为管片式散热器在一定范围内进行再设计提供理论参考。

Abstract:

To set up a solid mapping relation between the internal structure of a radiator and its heat dissipation performance to enhance the system’s performance in some bad working conditions, such as in an over-loaded or high-temperature environment, a redesign method based on parameter-sensitivity analysis is introduced here. According to the theoretical descriptions on the heat-transfer process given by forced-convection heat transfer theory, a mathematic model is built to weigh the significance of the radiator’s design parameters to the system’s heat dissipation performance. A sensitivity factor is derived by examining the effect of the variation in each parameter to the output of the system which quantitatively describing the range of the parameter’s influence to the system’s performance. The new design method is expected to be a reference for radiator design under certain circumstance.