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A Simplified Calculation Method of Heat Source Model for Induction Heating

by 1, 1,2,3,*, 1,2,3, 4 and 4
1
School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2
Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai 200240, China
3
Hubei Key Laboratory of Naval Architecture and Ocean Engineering Hydrodynamics (HUST), Wuhan 430074, China
4
Shanghai Waigaoqiao Shipbuilding Co., Ltd., Shanghai 200137, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(18), 2938; https://doi.org/10.3390/ma12182938
Received: 4 August 2019 / Revised: 4 September 2019 / Accepted: 9 September 2019 / Published: 11 September 2019
Line heating is used in forming the complex curve plates of ships, and this process is becoming integrated into automated tools. Induction heating equipment has become commonly used in automatic line heating. When applying automated equipment, it is necessary to calculate the relationship between the heating parameters and the temperature field. Numerical methods are primarily used to accomplish the calculations for induction heating. This computation process requires repeated iterations to obtain a stable heat generation rate. Once the heat generation rate changes significantly, a recalculation takes place. Due to the relative position of the coil and plate changes during heating, the grid needs to be frequently re-divided during computation, which dramatically increases the total computation time. In this paper, through an analysis of the computation process for induction heating, the root node that restricts the computation efficiency in the conventional electromagnetic-thermal computation process was found. A method that uses a Gaussian function to represent the heat flux was proposed to replace the electromagnetic computation. The heat flux is the input for calculating the temperature field, thus avoiding the calculation of the electromagnetic analysis during induction heating. Besides, an equivalence relationship for multi-coil was proposed in this paper. By comparing the results of the experiment and the numerical method, the proposed heat source model’s effectiveness was verified. View Full-Text
Keywords: induction heating; heat source model; shape parameters; Gaussian function induction heating; heat source model; shape parameters; Gaussian function
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Dong, H.; Zhao, Y.; Yuan, H.; Hu, X.; Yang, Z. A Simplified Calculation Method of Heat Source Model for Induction Heating. Materials 2019, 12, 2938.

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