Abstract In the food processing of microwave heating, it is a very common method to increase the production efficiency of products by means of conveyor belts. However, due to complex mathematical modeling, it is still a problem for fast and efficient calculations of microwave heating of moving sample. In this work, a novel algorithm method is proposed to for rapid simulated microwave heating of food moving on a conveyor belt. The moving domain material is set as a function of space coordinates and time by introducing the implicit function and level set methods. The electromagnetic power density in the moving domain is extended back to the initial position to calculate the temperature distribution, which ensures the continuity and accuracy of the simulation. The calculation results show that compared with the conventional method, the calculation efficiency of the proposed method is improved by 572%. Moreover, the proposed method does not require mesh reconstruction, and the proposed method is also applicable to radio frequency moving heating. The feasibility and accuracy of the method were verified by experimentally measuring the temperature change.

中文翻译：

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一种对传送带上移动的食物进行快速模拟微波加热的新算法方法

摘要 在微波加热食品加工中，通过传送带提高产品生产效率是一种非常普遍的方法。然而，由于数学建模复杂，如何快速高效地计算移动样品的微波加热仍然是一个难题。在这项工作中，提出了一种新的算法方法来快速模拟在传送带上移动的食物的微波加热。通过引入隐函数和水平集方法，将运动域材料设置为空间坐标和时间的函数。将运动域中的电磁功率密度扩展回初始位置计算温度分布，保证了仿真的连续性和准确性。计算结果表明，与常规方法相比，所提方法的计算效率提高了572%。此外，所提出的方法不需要网格重建，所提出的方法也适用于射频移动加热。通过对温度变化的实验测量，验证了该方法的可行性和准确性。