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Heat transfer during transient compression: Measurements and simulations

机译：瞬态压缩过程中的热传递：测量和模拟

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Experiments have been performed to assess the utility of unsteady one-dimensional heat conduction modelling for the calculation of heat losses during a free piston compression process. Heat transfer measurements have been obtained within a gun tunnel barrel using surface junction thermocouple instrumentation. The gun tunnel was operated with a relatively heavy piston such that the shock waves induced by the piston motion were weak. Peak heat transfer values are estimated reasonably well by the unsteady one-dimensional model. However, overall quantitative agreement between the measurements and calculations has not been achieved at this stage, principally because the development of turbulent heat transport was not properly modelled. [References: 12]
机译：已经进行了实验，以评估非恒定一维热传导模型在自由活塞压缩过程中计算热损失的效用。已经使用表面结热电偶仪器在枪管内进行了传热测量。喷枪通道使用相对较重的活塞操作，因此由活塞运动引起的冲击波微弱。不稳定的一维模型可以很好地估算出峰值传热值。但是，在此阶段尚未实现测量和计算之间的总体定量一致性，这主要是因为湍流传热的发展没有得到正确建模。 [参考：12]

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