Experimental and Numerical Investigation of a Longfin Inshore Squid's Flow Characteristics

被引：0
|
作者：
Olcay, A. Bahadir [1 ]
Malazi, M. Tabatabaei [2 ]
Okbaz, A. [2 ]
Heperkan, H. [2 ]
Firat, E. [3 ]
Ozbolat, V. [3 ]
Gokcen, M. Gokhan [4 ]
Sahin, B. [3 ]
机构：
[1] Yeditepe Univ, Dept Mech Engn, TR-34755 Istanbul, Turkey
[2] Yildiz Tech Univ, Fac Mech Engn, TR-34349 Istanbul, Turkey
[3] Cukurova Univ, Dept Mech Engn, TR-01330 Saricam Adana, Turkey
[4] Dogus Univ, Dept Mech Engn, TR-34722 Istanbul, Turkey
来源：
JOURNAL OF APPLIED FLUID MECHANICS | 2017年 / 10卷 / 01期
关键词：
Computed tomography (CT); CFD; Drag; Propulsive efficiency; Longfin inshore squid; VEHICLE; DRAG; COEFFICIENTS; PERFORMANCE; CFD;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In the present study, a three-dimensional numerical squid model was generated from a computed tomography images of a longfin inshore squid to investigate fluid flow characteristics around the squid. The three-dimensional squid model obtained from a 3D-printer was utilized in digital particle image velocimetry (DPIV) measurements to acquire velocity contours in the region of interest. Once the three-dimensional numerical squid Model was validated with DPIV results, drag force and coefficient, required jet velocity to reach desired swimming velocity for the squid and propulsion efficiencies were calculated for different nozzle diameters. Besides, velocity and pressure contour plots showed the variation of velocity over the squid body and flow separation zone near the head of the squid model, respectively. The study revealed that viscous drag was nearly two times larger than the pressure drag for the squid's Reynolds numbers of 442500, 949900 and 1510400. It was also found that the propulsion efficiency increases by 20% when the nozzle diameter of a squid was enlarged from 1 cm to 2 cm.
引用
收藏
页码：21 / 30
页数：10
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