Hydrodynamic Analysis of Autonomous Underwater Vehicle (AUV) Flow Through Boundary Element Method and Computing Added-Mass Coefficients

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Research areas:
Year:
2015
Type of Publication:
Article
Keywords:
Hydrodynamic, Autonomous Underwater Vehicle, AUV, Added-Mass Coefficients
Authors:
Mehran Shahbazi; Shahriar Mansourzadeh; Ahmad Reza Pishevar
Journal:
IJAIM
Volume:
3
Number:
4
Pages:
212-217
Month:
Jan.-Feb.
ISSN:
2320-5121
Abstract:
In stating Newton second rule and predicting one quantities of force, mass, and acceleration, the third quantity must be extracted through determining relation of two other quantities. It will be easily implemented in vacuum environment, as the mass of accelerated object is a determined, constant value. In a fluid environment with given density and unsteady current, it is not simply possible to determine the object effective mass satisfying Newton relation; thus, it requires understanding the nature of object passing current and its movement. Added-mass (lumped mass) issue was initially introduced by Dubua in 1776, who experimentally studied pendulum vacillation [1]. Green and Stoks mathematically described added-mass in details in 1833 and 1843[2]. In conclusion, they found that it is essential to consider added-mass in complementary to body mass; thus, added-mass will be indicated as a coefficient of moved fluid volume mass by object.

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