Abstract
In the present paper, in order to investigate the effect of free surface on drag and lift coefficients of an Autonomous Underwater vehicle,11AUV. two phase flow Reynolds Averaged Navier–Stokes (RANS) equations were solved using computational fluid dynamics. The numerical results were compared with those obtained from both numerical single phase flow simulations and the experiments conducted in the towing tank of the Subsea R&D Center at Isfahan University of Technology, using a 1:1 scale model of AUV developed in this center. The study was conducted at various submergence depths ranging from 0.87 to 5.22 of the AUV diameter and at the speeds of 1.5 and 2.5m/s (corresponding to Reynolds numbers of 1.9 and 3.17 million, respectively). The variation of drag and lift coefficients of the AUV with the submergence depth were shown to be very sensitive to the AUV speed.
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.
