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基于ANSYS有限元软件,模拟研究了玻璃钢蜂窝板的稳态、瞬态传热。在与实际试验保持一致的情况下,建立了玻璃钢蜂窝板流体与固体耦合传热平面模型,研究了蜂窝芯为不同工况时,玻璃钢蜂窝板稳态与瞬态热性能、热量传递机制,稳态的热性能的当量热导率的模拟结果与Swann and Pittman经验公式计算的结果十分吻合,并且瞬态表面热响应的模拟结果与试验结果也较吻合,说明ANSYS有限元方法能够准确模拟玻璃钢蜂窝板传热。此外,蜂窝芯腔表面间的辐射换热是玻璃钢蜂窝板的一个重要的热量传递机制,在高温情况下应考虑辐射换热。随着蜂窝芯高度的增加,玻璃钢蜂窝板的导热系数逐渐增大。玻璃钢蜂窝板的总高度固定时,随着蜂窝芯层数的增加,玻璃钢蜂窝板的导热系数逐渐降低,温度逐渐降低并趋于稳定值。
Based on ANSYS finite element software, the steady state and transient heat transfer of FRP honeycomb panels were simulated. In accordance with the actual experiment, the fluid-solid coupling heat transfer plane model of FRP honeycomb honeycomb plate was established. The steady-state and transient thermal performance, heat transfer mechanism and stability of the FRP honeycomb plate under different operating conditions were studied. The simulation results of the equivalent thermal conductivity of state thermal properties are in good agreement with those calculated by Swann and Pittman empirical formula. The simulation results of transient surface thermal response are in good agreement with the experimental results, which shows that ANSYS finite element method can accurately simulate the fiberglass honeycomb Heat transfer board. In addition, the radiative heat transfer between the surfaces of the honeycomb core is an important heat transfer mechanism of FRP honeycomb panels. Radiation heat transfer should be considered under high temperature conditions. As the height of the honeycomb core increases, the thermal conductivity of the FRP honeycomb board gradually increases. When the total height of FRP honeycomb panel was fixed, the thermal conductivity of FRP honeycomb panel gradually decreased with the increase of the number of honeycomb core layers, and the temperature gradually decreased and stabilized.