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Volume 16 - Summer and Fall 2021
ijmt 2021, 16 - Summer and Fall 2021: 123-134 |
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Yari E. Numerical Analysis of Hydrodynamic-Structural and Vibration of Pump Jet Propulsion System of AUV. ijmt 2021; 16 :123-134
URL: http://ijmt.ir/article-1-765-en.html
URL: http://ijmt.ir/article-1-765-en.html
Maleke Ashtar University of Technology
Abstract: (2428 Views)
The aim of this paper is the numerical hydrodynamic, structure, and vibration analysis of a pump jet propulsion system that mounted the tail of the AUV. A home code based on the boundary element method coupled with XFOIL code is used to extract the initial pump jet geometry. Then computational fluid dynamics analysis of DTMB4119 benchmark propeller (for validation of numerical result) and desired pump jet propulsion system have carried out based on RANS method and realizable k-ɛ turbulence model. Pump jet geometry modification has been done so that in the maximum hydrodynamic efficiency, the maximum amount of rotor moment is neutralized by the stator moment. However, according to the obtained hydrodynamic results, the stator moment neutralizes 85% of the rotor moment in the best situation. The maximum accessible hydrodynamic efficiency of the designed pump jet propulsion is 83%. The structural analysis of the designed pump jet propulsion has been performed on the rotor, stator, hub, and duct. For structure and vibration analysis, the pressure distribution on the pump jet obtained from the CFD results is applied point by point. The pump jet is aluminum with a Young modulus of 70 GPa. Based on the obtained structural results, the rotor will not have a problem vibrating.
Type of Study: Research Paper |
Subject:
Submarine Hydrodynamic & Design
Received: 2022/08/12 | Accepted: 2022/11/30
Received: 2022/08/12 | Accepted: 2022/11/30
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