Abstract
In the early design stage of an underwater vehicle (UV) is very important to assess a resistance of a body which is operated in under free surface water. An approach in predicting a resistance coefficient of an UV using a wind tunnel equipment is introduced. The open circuit type of wind test in the department of mechanical engineering ITS is utilized on the scaled model test considers to the similarity of Reynold's numbers. The two types of models which are the model without and with appendages of rudder and fin are tested at the five wind speeds from 4.46 m/s to 7.43 m/s consider to the speed design requirements. The computational fluid dynamic (CFD) based on the Reynolds-averaged Navier-Stokes (RANS) and the turbulent flow model of k-ε under FLUENT software are conducted to estimate the UV resistance as same conditions as the model test. Comparison of both approaches for all speeds perform a good closeness result with the average difference around 2% and it verified with published result. The appendages give contribution to increase the UV resistance up to 3 % on average.
Original language | English |
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Pages (from-to) | 4355-4366 |
Number of pages | 12 |
Journal | Journal of Engineering Science and Technology |
Volume | 17 |
Issue number | 6 |
Publication status | Published - Dec 2022 |
Keywords
- Computational fluid dynamics
- Resistance
- Underwater vehicle
- Wind tunnel