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Reduced Order Modeling for Supersonic Cavity Flows

机译：超音速流量的减少阶型建模

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In this study, Proper Orthogonal Decomposition (POD) is used to obtain reduced order models for different supersonic cavity flow configurations. The preliminary study is performed for an open cavity with a length to depth ratio (L/D) of 5.07 and a Mach number of 1.5. The POD method is applied to x-velocity data obtained as a result of CFD simulations of the flow. The reduced order modeling method is applied to different cavity configurations that have different L/D ratios; 1, 3, 7.6 and 10. With POD results, effects of L/D ratios to the flow are presented. As the flow becomes more complex, the necessary number of modes to represent the system also increases. For each case, results of the developed reduced order models which represent the main flow characteristics with less data show good agreement with CFD results.
机译：在该研究中，适当的正交分解（POD）用于获得不同超声腔流量配置的减少的订单模型。对开口腔进行初步研究，其长度为5.07的深度比（L / D）和1.5的马赫数。 POD方法应用于由于流程的CFD模拟而获得的X速度数据。减少的阶阶建模方法应用于具有不同L / D比的不同腔配置; 1,3,7.6和10。随着POD的结果，提出了L / D比对流动的影响。随着流动变得更复杂，表示系统的必要模式也增加。对于每种情况，所开发的减少订单模型的结果表示具有较少数据的主流特性与CFD结果显示良好的一致性。

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