UNDERSTANDING FLOW CHARACTERISTICS OF SWIMMING SQUID USING 2D AXISYMMETRIC NUMERICAL MODEL

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Mühendislik Bilimleri ve Tasarım Dergisi
Volume:2 Issue:3
UNDERSTANDING FLOW CHARACTERISTICS OF SWIMMING SQUID USING 2D AXISYMMETRIC NUMERICAL MODEL

UNDERSTANDING FLOW CHARACTERISTICS OF SWIMMING SQUID USING 2D AXISYMMETRIC NUMERICAL MODEL

Authors : Mahdi TABATABAEI, Ali OLCAY, Gökhan GÖKÇEN, Abdulkerim OKBAZ, Hasan HEPERKAN

Pages : 293-297

View : 24 | Download : 10

Publication Date : 2014-12-29

Article Type : Other Papers

Abstract :Squids in nature generate pulsed jet to be able to move by expelling high pressure water through funnel in a short period of time. In this study, unsteady jet flow of squids was investigated during its fast swimming phase. Numerical model has been generated from a real squid`s computer tomography images. 2D axisymmetric jet flow has been simulated by using dynamic mesh to mimic the motion of squid`s mantle cavity wall. Specifically, diameter of the squid`s mantle cavity decreases from 13 cm to 4 cm and a periodic sine velocity profile has been defined for squid`s mantle cavity wall. Besides, the funnel of squid seems to be a 3 cm long nozzle which has about 3 cm and 0.5 cm diameters at the inlet and outlet, respectively. Physical behaviors of jet flow has been investigated to be able to calculate change of ejected fluid`s momentum and flow energy in this study
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