Effect of hole diameter of rotary-shaped artificial reef on flow field. (1st February 2020)

• Record Type: Journal Article
• Authors: Jiang, Zhaoyang; Liang, Zhenlin; Zhu, Lixin; Guo, Zhansheng; Tang, Yanli
• Is Part Of: Ocean engineering. Volume 197(2020)
• Publication Date: 2020-02-01
• Subjects: Artificial reef -- Numerical simulation -- Reef design -- Flow field -- Cut-opening ratio; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2020.106917
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: Opening holes, especially circular hole, in artificial reef block is a conventional choice in design of artificial reef. However, there is less scientific study about how to select the hole diameter. In this article the performance of the rotary-shaped artificial reefs with different size of circle holes was investigated using CFD method and the orthogonal experiment design. The reef having the best performance was identified. The results indicate that the design of interlaced hole diameter can significantly promote the flow field scope, especially the height of upwelling, in comparison with that with the uniform hole diameter. There is no obvious relationship between the cut-opening ratio and flow field effect for the rotary-shaped reef. This work supplies a scientific evidence for how to select the hole diameter for an artificial reef. Highlights: A rotary-shaped artificial reef with sixteen circle holes was analyzed the effect of hole diameter on flow field. The function of interlaced hole diameter at the promotion of upwelling was analyzed by CFD and orthogonal method. The design of interlaced hole diameter can significantly promote the flow field effect than that of uniform hole diameter, especially the upwelling flux. There is no obvious relationship between the cut-opening ratio (OR) and flow field effect.