A General Inheritance Algorithm for Calculating of Arbitrary Moving Samples During Microwave Heating

Moving models, such as translation, rotation, and other motion modes, are widely applied to improve the microwave heating uniformity. However, due to a variety of motion modes, the deformation of mesh, including discontinuity, crossing, and winding, usually occurs in the process of microwave heating calculation. It is a great challenge to numerical simulation of moving samples because of the lack of a common calculation method. In this article, a novel inheritance algorithm, which inherits both the grid and temperature distribution of the sample, can be used to calculate arbitrary moving models of microwave heating process. It is adopted to inherit the grid and temperature distribution in the finite element method to ensure that each temperature calculation result can perfectly correspond to the temperature value of these mesh nodes. By building a 3-D mathematical model of translation, swing, and rotation, the coupling process of electromagnetic field and thermal phenomena in microwave heating was performed and the proposed method was clearly illustrated. Finally, the calculated results are consistent with the experimental results, confirming the accuracy of the algorithm. Compared with the conventional algorithm, the proposed algorithm has a higher precision and practically and can be used to simulate microwave heating of arbitrary motions.