高次精度CFD解析の航空機脚まわりの非定常流れ場に対する検証

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This paper describes a validation study of higher order CFD code for unsteady flow characteristics around aircraft landing gear models. A CFD code ``Cflow has been developed. Cflow employs higher order numerical scheme and unstructured Cartesian grid system to satisfy both of capturing unsteady flow characteristics and handling complicated geometry. Wind tunnel test data from AIAA Workshop on Benchmark problems for Airframe Noise Computations--I is used in this study. Validation was conducted for simple four wheels landing gear and realistic two wheels landing gear. Comparison of steady and unsteady surface pressure, wake characteristics, and far field aero acoustic noise showed good agreement between CFD results and wind tunnel test data.