间断Galerkin 方法在气冷透平流热耦合计算中的应用

摘要

Effective methods and reliable tools are needed for designing and analyzing power generation assemblies such as gas turbine. A set of Reynolds average solver provided with higher precision was developed by combining discontinuous Galerkin discrete method and SST+γ-Reθtransition model. Computing power and computer capacity of this solver was wide that might support various turbulence models and flow thermal coupling calculation. Flow thermal coupling calculation on air-cooled turbine in the gas turbine was conducted by applying this method and its developed solver. The result indicated that this method and the solver was effectively able to improve calculation precision and show wide application prospect of discontinuous Galerkin method in gas turbine numerical calculation.%燃气轮机等发电设备的设计和分析需要有效方法及可靠工具，结合间断 Galerkin 离散方法和 SST+γ-Reθ转捩模型，开发了一套具有较高精度的雷诺平均求解器。该求解器计算能力及计算范围广泛，支持多种湍流模型及流热耦合计算。应用该方法及所开发的求解器对燃气轮机内气冷透平进行流热耦合计算，结果表明该方法及所开发的求解器能有效提高气热耦合温度计算精度，展现了间断 Galerkin方法在燃气轮机数值计算中广阔的应用前景。