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

IF 4.7 Q2 MATERIALS SCIENCE, BIOMATERIALS ACS Applied Bio Materials Pub Date : 2024-05-21 DOI:10.3390/act13060194

Huan Wang, Xiaoxu Du, Yuli Hu

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Abstract

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 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 flow control is solved by establishing a fast prediction model in an innovative way.

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基于 POD 法的混合翼身水下滑翔机水翼稳流吸力和射流流量控制还原阶模型研究

快速获取流场特征信息对于闭环主动流控制至关重要。适当正交分解（POD）法是一种广泛应用的流场降阶建模方法，可有效获取流动特性。基于 POD 方法，本文构建了一个流场降阶模型（ROM），用于具有稳定吸力和吹力的混合翼身水下滑翔机（BWB-UG）水翼的流场控制。与计算流体动力学（CFD）模拟相比，使用所建立的 POD-ROM 预测目标流场所需的计算时间仅为 0.1 秒左右，明显少于 CFD 模拟时间。预测表面压力的平均相对误差不超过 6.9%。这些结果证实了 POD-ROM 在重建流动特性方面的准确性和高效性。通过创新性地建立快速预测模型，解决了 BWB-UG 主动流控制中快速流场预测的时效性问题。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.