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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
Том 47, 2020 Том 46, 2019 Том 45, 2018 Том 44, 2017 Том 43, 2016 Том 42, 2015 Том 41, 2014 Том 40, 2013 Том 39, 2012 Том 38, 2011 Том 37, 2010 Том 36, 2009 Том 35, 2008 Том 34, 2007 Том 33, 2006 Том 32, 2005 Том 31, 2004 Том 30, 2003 Том 29, 2002 Том 28, 2001 Том 27, 2000 Том 26, 1999 Том 25, 1998 Том 24, 1997 Том 23, 1996 Том 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.2020034583
pages 371-385

NUMERICAL SIMULATION STUDY ON BIONIC MUCUS DRAG REDUCTION OF UNDERWATER VEHICLE

Kaisheng Zhang
Department of Mechatronics Engineering, College of Engineering, Ocean University of China, Qingdao, China
Chaofan Ma
Department of Mechatronics Engineering, College of Engineering, Ocean University of China, Qingdao, China
Baocheng Zhang
Department of Mechatronics Engineering, College of Engineering, Ocean University of China, Qingdao, China
Bo Zhao
Department of Mechatronics Engineering, College of Engineering, Ocean University of China, Qingdao, China
Qiang Wang
Department of Mechatronics Engineering, College of Engineering, Ocean University of China, Qingdao, China

Краткое описание

The surface characteristics of fish have excellent drag reduction capabilities. Compared with scales, the mucus secreted by the fish body surface has even better results. In this paper, the FENE-P constitutive model and the mixture multiphase flow model are used to simulate the drag reduction effect of the underwater vehicle secreting mucus (viscoelastic fluid) to form a mucous membrane on the outer surface from the perspective of bionics. The simulation results show that the drag reduction rate of the mucous membrane can reach about 17%. The increase in the thickness of the boundary layer caused by the mucus and the backward movement of the separation point are the main reasons for the decrease in resistance. The turbulence statistics of the boundary layer of the aircraft and the Reynolds stress are also compared, and the influence of the parameter change on the drag coefficient is obtained. The maximum drag reduction rate occurs when the viscosity ratio is 0.8, the maximum molecular stretch length is 80, and the Weissenberg number is 20, which provides a new method for drag reduction of underwater vehicles.

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