Investigation on the Reduced-Order Model for the Hydrofoil of the Blended-Wing-Body Underwater Glider Flow Control with Steady-Stream Suction and Jets Based on the POD Method

Investigation on the Reduced-Order Model for the Hydrofoil of the Blended-Wing-Body Underwater Glider Flow Control with Steady-Stream Suction and Jets Based on the POD Method

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The rapid acquisition of flow field characterization information is crucial for closed-loop active flow control.The proper orthogonal decomposition (POD) method is a widely used flow field downscaling modeling method to obtain flow characteristics effectively.Based on the POD method, a flow field reduced-order model (ROM) is constructed in this paper for the flow field control of a hydrofoil of a blended-wing-body underwater glider (BWB-UG) with stabilized suction and princess polly dresses long sleeve blowing forces.Compared with the computational fluid dynamics (CFD) simulation, the computational time required to predict the target flow field using the established POD-ROM is only about 0.1 s, which is significantly less than the CFD simulation time.

The average relative error of the predicted surface pressure is not more than 6.9%.These results confirm the accuracy and efficiency of the POD-ROM in reconstructing flow characteristics.The timeliness problem of fast flow field prediction in BWB-UG active simply southern cat shirt flow control is solved by establishing a fast prediction model in an innovative way.