Analysis of a Fin Drag Force in a Biomimetic Underwater Vehicle

This article presents the analysis of fi n drag force in a Biomimetic Underwater Vehicle (BUV).To carry out numerical simulations Incompressible Computational Fluid Dynamics (ICFD) solver was used.The simulation model was verifi ed in the designed laboratory test stand.The laboratory test stand was equipped with specialized sensors for force measurements and control of fl uid velocity.An average value of fl uid velocity in the water tunnel was measured by specialized high accuracy ultrasonic fl owmeter.A vision system was used for analysis of laminar and turbulent fl ows in the fl uid structure interaction area.The research of fl uid-structure interaction phenomena was depicted using dimensional analysis.Sažetak U radu se daje analiza sile otpora biomimetičkog podvodnog vozila (BUV).Za provođenje numeričkih simulacija koristio se program Računalna dinamika fl uida (ICFD).Simulacijski model provjeren je u posebno izrađenom laboratoriju.Laboratorij je opremljen specijaliziranim senzorima za mjerenje sile i kontrole brzine fl uida.Prosječna vrijednost brzine fl uida u vodenom tunelu izmjerena je specijaliziranim i vrlo preciznim ultrasoničnim uređajem za mjerenje brzine strujanja.Sustav promatranja koristio se za analizu laminarnih i turbulencijskih strujanja u području interakcije u strukturi fl uida.Istraživanje fenomena interakcije u strukturi fl uida provedeno je uporabom dimenzionalne analize.