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首页> 外文期刊>International Journal of Heat and Mass Transfer >Steady-periodic heating in parallel-plate microchannel flow with participating walls
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Steady-periodic heating in parallel-plate microchannel flow with participating walls

机译：具有参与壁的平行板微通道流中的稳态周期性加热

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摘要

Simulations are presented for thermal sensing of steady laminar flow in a parallel-plate microchannel. Steady-periodic heating is introduced at the channel wall and temperatures are reported at upstream and downstream locations to represent temperature sensors. Exact analytical expressions for the temperature are given in the form of integrals, and numerical values are found by quadrature. Because axial conduction is prominent, there is a well-defined measurable flow range associated with each thermal-sensor geometry. Various fluid-flow rates, heating frequencies, sensor locations, and wall properties are explored. The results are given as a design correlation which shows the extent to which a given sensor can be tuned, by adjusting the heating frequency, to the flow-measurement range of interest.
机译：提出了用于对平行板微通道中的稳定层流进行热感测的仿真。在通道壁处引入稳定的周期加热，并在上游和下游位置报告温度，以表示温度传感器。温度的精确解析表达式以积分形式给出，并且通过求积分得到数值。由于轴向传导非常突出，因此每个热传感器的几何形状都有一个明确定义的可测量流量范围。探索了各种流体流速，加热频率，传感器位置和壁特性。结果以设计相关性的形式给出，该相关性显示了通过调整加热频率可以将给定传感器调整到感兴趣的流量测量范围的程度。

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