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首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical analysis of microwave melting of ice-saturated porous medium filled in a rectangular waveguide with resonator using a combined transfinite interpolation and PDE methods
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Numerical analysis of microwave melting of ice-saturated porous medium filled in a rectangular waveguide with resonator using a combined transfinite interpolation and PDE methods

机译：结合有限元插值和PDE方法对带有谐振器的矩形波导中填充的冰饱和多孔介质的微波融化数值分析

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摘要

A numerical study is performed for the melting process of ice-saturated porous medium filled in a rectangular waveguide with a resonator subjected to electromagnetic energy. A microwave system supplies a monochromatic wave in a fundamental mode (TE_(10) mode) with operating frequency of 2.45 GHz. Focus is placed on establishing a computationally efficient approach for solving moving boundary heat transfer problem in a two-dimensional structured grid. Numerically, preliminary grids are first generated by an algebraic method, based on a transfinite interpolation method, with subsequent refinement using a PDE mapping method. A preliminary case study indicates successful implementation of the numerical procedure. The predicted results from two-dimensional melting model are then validated against available experimental results and subsequently used as a tool for efficient computational prototyping. Based on the numerical results are performed illustrating the influence of resonator and layered configuration, in case of the installed resonator has strongly affected on the microwave power absorbed, temperature distribution, and the melting front during microwave melting process.
机译：对填充在矩形波导中的冰饱和多孔介质的熔化过程进行了数值研究，该矩形波导中的谐振器受到电磁能的作用。微波系统以工作模式为2.45 GHz的基本模式（TE_（10）模式）提供单色波。重点放在建立一种有效的计算方法上，以解决二维结构化网格中的移动边界传热问题。在数值上，首先基于超限插值方法，通过代数方法生成初步网格，然后使用PDE映射方法进行细化。初步的案例研究表明成功执行了数值程序。然后，根据可用的实验结果验证来自二维熔解模型的预测结果，随后将其用作有效计算原型的工具。基于数值结果，说明了谐振器和分层结构的影响，在安装的谐振器严重影响微波熔化过程中吸收的微波功率，温度分布和熔化前沿的情况下。

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