TY - GEN
T1 - Resistance and propulsion performance of an underwater vehicle estimated by a CFD method and experiment
AU - Nishi, Yoshiki
AU - Kashiwagi, Masashi
AU - Koterayama, Wataru
AU - Nakamura, Masahiko
AU - Samuel, Soo Zi Hua
AU - Yamamoto, Ikuo
AU - Hyakudome, Tadahiro
PY - 2007
Y1 - 2007
N2 - To develop an underwater vehicle with better propulsion performance allowing long-time observations in the ocean, the resistance force acting on the vehicle is accurately estimated using computational fluid dynamics (CFD) and experiments in a towing tank. The flow around the body is simulated by a commercial CFD code (STAR-CD), and actuation of the thruster is modeled by a simplified propeller theory. The two-way coupling between the flow and the thruster is treated with an iteration scheme to satisfy the condition of equilibrium between the resistance and the thrust. For validation of the numerical method, the resistance computed is compared to the one measured by the experiment, which turns out to be good in agreement. In addition, the optimization of the body shape for less resistance is studied by considering several body shapes with their self-propulsion factors taken into account.
AB - To develop an underwater vehicle with better propulsion performance allowing long-time observations in the ocean, the resistance force acting on the vehicle is accurately estimated using computational fluid dynamics (CFD) and experiments in a towing tank. The flow around the body is simulated by a commercial CFD code (STAR-CD), and actuation of the thruster is modeled by a simplified propeller theory. The two-way coupling between the flow and the thruster is treated with an iteration scheme to satisfy the condition of equilibrium between the resistance and the thrust. For validation of the numerical method, the resistance computed is compared to the one measured by the experiment, which turns out to be good in agreement. In addition, the optimization of the body shape for less resistance is studied by considering several body shapes with their self-propulsion factors taken into account.
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M3 - Conference contribution
AN - SCOPUS:36448989731
SN - 1880653680
SN - 9781880653685
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 2045
EP - 2052
BT - Proceedings of The Seventeenth 2007 International Offshore and Polar Engineering Conference, ISOPE 2007
T2 - 17th 2007 International Offshore and Polar Engineering Conference, ISOPE 2007
Y2 - 1 July 2007 through 6 July 2007
ER -