Characteristics of the Turbulent Flow Field in a Wall Attachment Device : In the Case of No Control Port, One Output Port Closed

概要

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On a simplified model with no control port and one output port closed, some numerical computations and visualizing experiments have been performed. In this calculation method, the flow field was divided according to local Reynolds number into three regions, that is, turbulent, transient and laminar regions, and the calculation method matched to each region was applied. Then, the finite difference method with k-ε model and Up-wind method were used for the turbulent region. In the experiments, the velocity measurement using a 3-port Pitot tube and the flow visualization by tuft and tracer methods were performed. The calculation results indicated good agreement with the experimental results, and the characteristics of the turbulent flow field in a wall attachment device and the validity of this calculation method were able to be clarified.
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