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Numerical vs experimental continuous pipe flow in microwave heating

机译：数值VS微波加热中的实验连续管道流动

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In this paper, forced convection for fully developed flow in a circular duct subjected to microwave heating is investigated by the finite element technique. The 3D temperature field in the illuminated cavity is determined by solving the energy and Maxwell's equations which are coupled due to temperature dependence on the dielectric properties of the fluid in the duct. Meanwhile, the numerical model describes the available pilot plant which realizes microwave heating. Experimental heating patterns are recovered by an infrared thermography equipment from the outside looking at the applicator-pipe inside the microwave chamber. Providing a suitable data reduction, such a procedure is intended to realize relatively high spatial resolution temperature readings while microwave heating takes place. In facts, temperatures are usually measured in few points which can't enable a proper temperature profile reconstruction, the latter being strongly uneven along the pipe due to electromagnetic field distribution. Finally, numerical results are compared with the corresponding experimental ones for different temperature levels, thus enabling to asses that a quite satisfying theoretical description is recovered.
机译：本文采用有限元技术研究了对微波加热进行微波加热的圆形管道中完全发育流的强制对流。通过求解由于温度依赖性对管道中的流体的电介质特性来耦合的能量和麦克斯韦方程，确定照明腔中的3D温度场。同时，数值模型描述了可用的试验工厂，实现了微波加热。实验加热图案由外侧的红外热成像设备回收，外面看微波室内的涂抹管。提供合适的数据降低，这种过程旨在实现相对高的空间分辨率温度读数，而微波加热发生。实际上，温度通常在少数点测量，这不能使得能够进行适当的温度曲线重建，由于电磁场分布，后者沿管道强烈不均匀。最后，将数值结果与相应的实验结果进行比较，从而使得能够判断恢复非常满足的理论描述。

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