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1- Malek Ashtar university of TechnologyFaculty of mechanical engineering
2- Malek Ashtar university of Technology
2- Malek Ashtar university of Technology
Abstract: (594 Views)
| The aim of this article is to numerically analyze the hydrodynamic performance and hydroelasticity of a fully submerged propeller at various skew angles while keeping other geometric parameters constant. For the validation of numerical hydrodynamic results, the DTMB4119 three-blade propeller, for which experimental cavitation tunnel data is available, has been utilized. The numerical solution employs the STAR-CCM+ software using the finite volume and finite element methods, with flow turbulence modeled using the SST k-ω turbulence model. Subsequently, to investigate the impact of blade skew angle distribution on the hydro-elastic performance of the propeller, the MAU propeller series has been used. Given that most submarine propulsion systems use seven-blade propellers, the study focuses on a seven-blade propeller designed for underwater applications, with skew angles ranging from 35 to 81 degrees. The results indicate that with an increase in the skew angle, the stress at the tip and root of the propeller rises, with an approximate 10% increase in stress from 35 degrees to 81 degrees. Moreover, this stress increase leads to a reduction in hydrodynamic efficiency. |
Keywords: Skew angle, Hydroelasticity, Von Mises Stress Analysis, Computational fluid dynamics, High skew propeller
Type of Study: Research Paper |
Subject:
Ship Hydrodynamic
Received: 2024/12/30 | Accepted: 2025/08/30
Received: 2024/12/30 | Accepted: 2025/08/30
فایل صوتی چکیده مقاله [MP3 2098 KB] (24 Download)
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