Journal of Dalian Maritime University >
2019 , Vol. 45 >Issue 3: 106 - 113
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2019.03.015
Numerical analysis of wave effects on towing resistance of large caisson based on CFD
Received date: 2019-04-30
Revised date: 2019-05-20
Online published: 2019-05-20
Aiming at the influence of wave on resistance of large square caisson during towing, numerical simulation of towing resistance of caisson under different flow velocities and wave heights was carried out by using computational fluid dynamics (CFD) method. The results show that the towing resistance of caisson fluctuates with the course of caisson heading, breaking and passing through waves. At the same velocity, the towing resistance of the caisson increases with the increase of the wave height. The towing resistance variation of the caisson with the wave height was basically the same at different current rates. The increase of the caisson towing resistance was proportional to the square of the wave height. The calculation of drag increment percentage shows that the percentage of drag increment is close to or more than 5% when the wave height exceeds 2 m. Therefore, it is suggested that wave height should be used as one of the factors for calculating the drag of open caisson in project.
ZENG Xiang-kun , XIAO Ying-jie . Numerical analysis of wave effects on towing resistance of large caisson based on CFD[J]. Journal of Dalian Maritime University, 2019 , 45(3) : 106 -113 . DOI: 10.16411/j.cnki.issn1006-7736.2019.03.015
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