高速气流作用下能量加载金属蜂窝板数值模拟

数值模拟研究了高速气流作用下能量加载金属蜂窝板温度场。针对金属蜂窝典型单元，构造了蜂窝核细观导热数值计算分析模型。采用流固耦合计算方法，使用两相流模型和凝固/熔化模型模拟气流对烧蚀物的剥蚀，较完整地模拟了能量加载金属蜂窝板的物理变化过程，计算得到了金属蜂窝板的温度分布以及烧蚀形貌。结果表明两相流方法能够较全面地模拟能量加载金属蜂窝板过程中的对流换热、熔化与凝固过程以及金属液体在气流冲刷下的动力学过程，能获得较为合理的物理图像。

Numerical simulation of metallic honeycomb plates with energy addition in high velocity flow

Metallic honeycomb sandwich structure is one of the major substructures in the reusable metal thermal projection system (MTPS). The thermal field of metallic honeycomb plate in flows with energy addition was computed. For typical metallic honeycomb kind of TPS, the numerical model of honeycomb core was constructed. The numerical simulation was based on fluid-solid coupling method. Two phase flow model and solidification/melting model were used to simulate the scouring effect. Physical process of laser ablation was described commendably with this method. The results of the thermal field and morphologies are presented in this paper, which indicate that the two phase flow numerical method can well simulate convective heat Transfer, solidification/melting of metallic honeycomb structures and dynamic action of metallic liquid under air flow scouring.