Experimental and Numerical Investigation of a Longfin Inshore Squid’s Flow Characteristics
| Autor: | Veli Ozbolat, Erhan Firat, A. Bahadır Olcay, Hasan Heperkan, Mehmet Gökhan Gökçen, Abdulkerim Okbaz, M. Tabatabaei Malazi, Besir Sahin |
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| Přispěvatelé: | Mühendislik Fakültesi, Çukurova Üniversitesi, Doğuş Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümü, TR26622, TR174514, TR47345, TR3895, Gökçen, Mehmet Gökhan |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Coefficients
Performance 020209 energy lcsh:Mechanical engineering and machinery Flow (psychology) Computed tomography (CT) CFD Drag Propulsive efficiency Longfin inshore squid Longfin İnshore Squid 02 engineering and technology Lolliguncula brevis 0202 electrical engineering electronic engineering information engineering lcsh:TJ1-1570 14. Life underwater Computed tomography (CT) CFD Drag Propulsive efficiency Longfin inshore squid Sphere biology Autonomous Underwater Vahicle Mechanical Engineering Condensed Matter Physics biology.organism_classification Lolliguncula-Brevis Oceanography Mechanics of Materials Geology |
| Zdroj: | Journal of Applied Fluid Mechanics, Vol 10, Iss 1, Pp 21-30 (2017) |
| Popis: | 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 threedimensional 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. TÜBİTAK 111M598 nolu proje |
| Databáze: | OpenAIRE |
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