Abstract
Drag reduction by artificial ventilation is a promising engineering method for improving ship performance. In the present study, a novel drag reduction approach of ventilated supercavities combined with gas layer is proposed for high speed surface vehicles with struts. Based on RANS equation, the SST turbulence model and the VOF multiphase flow model are used to numerically simulate the drag reduction scheme of artificially ventilated supercavities combined with gas layer of the surface vehicle with struts. The effect of the strut shape on the entrainment gas from the ventilated supercavities of the submerged body and the effect of the layout of auxiliary air vents on the coating efficiency of the bubble flow on the surface of submerged body are studied. And the skin friction coefficients of the vehicle under various auxiliary ventilation schemes are compared. The numerical results show that the shape of the strut and the position of the air vents relative to the strut on the submerged body have great influence on the skin friction resistance of the vehicle. Finally, the feasibility of the proposed scheme is verified by the model experiment.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
