Numerical Investigation of Three-Dimensional Plasma Actuation for Improving Film Cooling Effectiveness
Numerical Investigation of Three-Dimensional Plasma Actuation for Improving Film Cooling Effectiveness
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DOI：
10.2514/1.t3945
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发表时间：
2013-07
影响因子：
2.1
通讯作者：
Subrata Roy;Chin-Cheng Wang
中科院分区：
文献类型：
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作者：
Subrata Roy;Chin-Cheng Wang
我们对马蹄形等离子体激励器在平板上增强薄膜冷却进行了数值测试。我们使用基于有限元的湍流程序求解三维等离子体控制方程。从等离子体控制方程计算的电力密度，然后采用作为体积力密度到一个有限体积的Navier-Stokes方程求解器与标准的湍流模型，用于控制流量。这样的电力影响附件的冷射流的工作表面，通过主动改变三维流场附近的致动器。我们考虑与薄膜冷却有关的两个问题。第一个问题是了解马蹄形等离子体激励器对流场的影响，其中冷却射流和整体流速与等离子体本身诱导的流动具有相同的量级。第二个问题是验证之前报道的薄膜冷却实验，该实验在平板上以35度角分布一排圆形冷却孔，然后预测任何改进..
We numerically test a horseshoe plasma actuator for film cooling enhancement on a flat plate. We solve three-dimensional plasma governing equations using the finite element based MIG flow code. The electric force density calculated from the plasma governing equations is then employed as a body force density into a finite volume based Navier–Stokes solver with standard turbulence models for controlling the flow. Such electric force influences attachment of the cold jet to the work surface by actively altering the three-dimensional flowfield in the vicinity of the actuator. We consider two problems related to film cooling. The first problem is to understand the influence of a horseshoe plasma actuator on a flowfield where the cooling jet and the bulk flow speeds are of the same order of the flow induced by plasma itself. The second problem is to validate a previously reported film cooling experiment with a single row of round cooling holes issuing at a 35 deg angle on a flat plate, and then predict any impr...