Ai Wan-Zheng
School of Navigation, Zhejiang Ocean University, Zhoushan, 316021, Zhejiang, China
Pan Li-Ping
School of Navigation, Zhejiang Ocean University, Zhoushan, 316021, Zhejiang, China
ABSTRACT
The backflow region length of orifice plate, relating directly to the energy dissipation ratio and the setting of multi-stage orifice plates, is an important index of those energy dissipaters. In the present study, this coefficient and relative parameters were analyzed by theoretical considerations and their relationships were obtained by the numerical simulations. It could be concluded that the backflow region length was mainly dominated by the contraction ratio of the orifice plate as well as the ratio of the orifice plate thickness to tunnels diameter. The less the contraction ratio of the orifice plate is, the larger is the backflow region length. When Reynolds number is more than 105, Reynolds number has little impact on backflow region length. The conclusions obtained in this study can provide references for setting the distance between two orifice plates in installing multi-stage orifice plates.
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How to cite this article
Ai Wan-Zheng and Pan Li-Ping, 2013. Numerical Simulation of Orifice Plates Backflow Region Characteristics. Information Technology Journal, 12: 4508-4512.
DOI: 10.3923/itj.2013.4508.4512
URL: https://scialert.net/abstract/?doi=itj.2013.4508.4512
DOI: 10.3923/itj.2013.4508.4512
URL: https://scialert.net/abstract/?doi=itj.2013.4508.4512
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