Large-Eddy Simulation of Realistic Gas Turbine Combustors
Large-Eddy Simulation of Realistic Gas Turbine Combustors
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DOI：
10.2514/1.14606
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发表时间：
2004-01
期刊：
影响因子：
2.5
通讯作者：
P. Moin;S. Apte
中科院分区：
文献类型：
--
作者：
P. Moin;S. Apte
大涡模拟是一种很有前途的技术，用于准确预测实际燃气轮机燃烧室中的反应多相流，包括湍流混合和燃烧动力学的复杂物理现象。液体燃料雾化，液滴蒸发，液滴变形和阻力，湍流燃烧的先进模型的发展进行了讨论，特别是燃气轮机的应用。Mahesh等人（Mahesh，K.，Constantinescu，G.，和Moin，P.，“一种新的时间精确的非结构混合网格上湍流预测的体积分数步算法”，计算物理杂志，第197卷，第1期，2004年，第100页。215-240）被修改以考虑由于化学反应引起的密度变化。在规范和复杂的燃烧室几何形状中，对单个喷雾模型和数值方案进行了系统的确认和验证研究。最后，对一个真实的燃气轮机燃烧室进行了多尺度、多物理场的湍流反应流模拟，以评估求解器的预测能力。
Large-eddy simulation is a promising technique for accurate prediction of reacting multiphase flows in practical gas-turbine combustion chambers involving complex physical phenomena of turbulent mixing and combustion dynamics. Development of advanced models for liquid fuel atomization, droplet evaporation, droplet deformation and drag, and turbulent combustion is discussed specifically for gas-turbine applications. The nondissipative, yet robust numerical scheme for arbitrary shaped unstructured grids developed by Mahesh et al. (Mahesh, K., Constantinescu, G., and Moin, P., "A New Time-Accurate Finite-Volume Fractional-Step Algorithm for Prediction of Turbulent Flows on Unstructured Hybrid Meshes," Journal of Computational Physics, Vol. 197, No. 1, 2004, pp. 215-240) is modified to account for density variations due to chemical reactions. A systematic validation and verification study of the individual spray models and the numerical scheme is performed in canonical and complex combustor geometries. Finally, a multiscale, multi physics, turbulent reacting flow simulation in a real gas-turbine combustor is performed to assess the predictive capability of the solver.