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Numerical Simulation of Electromagnetic and Heat Transfer Phenomena in Inductively Heated Risers

机译:感应加热立管中电磁和传热现象的数值模拟

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Electromagnetic induction heating of open risers presents an energy efficient means to maintain the alloy in its molten state for mass feeding whilst allowing riser size reduction and substantial material savings. This paper presents preliminary simulation results of solidification phenomena in an inductively heated top riser. The electromagnetic field was calculated using a hybrid control volume/ integral method to solve the magnetic diffusion equation with accompanying boundary conditions, and used temperature dependent electrical conductivity. The heat transfer equation was solved using the control volume method. Computed results show that it is possible to prevent premature solidification of the riser even though traditional design criteria are violated. The significance of these findings pertaining to sand and ingot casting systems will be discussed.
机译:开口冒口的电磁感应加热提供了一种节能的方法,可将合金保持在熔融状态以供大量进料,同时可以减小冒口的尺寸并节省大量材料。本文介绍了感应加热顶部立管中凝固现象的初步模拟结果。使用混合控制体积/积分方法计算电磁场,以求解伴随边界条件的磁扩散方程,并使用与温度有关的电导率。使用控制体积法求解热传递方程。计算结果表明,即使违反了传统的设计标准,也可以防止立管过早固化。将讨论有关砂和铸锭系统的这些发现的意义。

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