International Journal of coastal and offshore engineering
نشریه بین المللی مهندسی ساحلی و فراساحلی
ijcoe
Engineering & Technology
http://ijcoe.org
1
admin
2538-2667
2588-3186
10.29252/ijcoe
en
jalali
1395
9
1
gregorian
2016
12
1
4
online
1
fulltext
en
Oscillating Motion of Triangular Cylinder in a Viscous Fluid
Sub-sea Technology
پژوهشي
Research
The system consisting of two rigid bodies in a viscous fluid is considered. The main body with mass M is placed in a viscous incompressible fluid, and the body with mass m moves inside the main body. This system is known as vibrobot which can be used in arbitrary inspection fluid mechanic objects such as oil industries pipes and tanks, as well as marine industries, medicine, etc. In this paper, the interaction between the vibrobot and viscous fluid is studied to achieve the motion laws of the vibrobot with the harmonic oscillation of internal mass. Also the flow structure around vibrobot and its effects on the hydrodynamic force acting on the vibrobot are investigated. Analyses are carried out by direct numerical simulation of the vibrobot motion in a viscous fluid by OpenFOAM package. Calculations are performed for the following combinations of control parameters; The ratio of the viscous fluid mass to the vibrobot mass μ_1=0.35, the ratio of the internal mass to the vibrobot mass μ_2=0.325 and dimensionless oscillation frequency f=1/5, when Reynolds number takes values in the range of 50<Re<250. Calculations have been performed with different initial approximations, determined by different initial velocities of the incident flow.
Triangular cylinder Harmonic oscillation Movable internal mass Numerical simulation OpenFOAM Viscous fluid.
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25
http://ijcoe.org/browse.php?a_code=A-10-1-23&slc_lang=en&sid=1
Hamid
Malah
`1003194753284600281`

1003194753284600281
Yes
Department of Hydroaerodynamics, Institute of Applied Mathematics and Mechanics, Peter the Great St.Petersburg Polytechnic University, St. Petersburg, 194064, Russia
Yuri Sergeyevich
Chumakov
`1003194753284600282`

1003194753284600282
No
Department of Hydroaerodynamics, Institute of Applied Mathematics and Mechanics, Peter the Great St.Petersburg Polytechnic University, St. Petersburg, 194064, Russia
Sara
Ramzani Movafagh
`1003194753284600283`

1003194753284600283
No
Department of Hydroaerodynamics, Institute of Applied Mathematics and Mechanics, Peter the Great St.Petersburg Polytechnic University, St. Petersburg, 194064, Russia