Numerical simulation of effect of guide plate on flow field of artificial reef

摘要

The main function of artificial reefs is to alter the flow field and form upwelling or complex wake region, which can promote the circulation of water column. A complex structure is considered to be necessary for an artificial reef to form the desirable flow field effect. Actually most of artificial reefs deposited in Shandong Province, China, are simple concrete structural body in recent years, which play little role in promoting the exchange of sea water. Even if the reef is design as a complex structure, it is difficult to manufacture by concrete. Therefore, a guide plate is was designed and installed on a cubic frame reef for a cost-effective purpose. We adopted the CFD method to analyze the function of the guide plate at the formation of upwelling, investigated the effect of the guide plate on flow field scope caused by different structure factors and proposed a specific cubic frame reef having the best performance on which the guide plate was installed. The results indicate that guide plate has a positive function at disturbing flow field. A smaller or larger installation angle has a significant influence on the formation of upwelling. (C) 2016 Elsevier Ltd. All rights reserved.