Experimental Study of Propeller-Appendage-Hull Interactions of Underwater Vehicles in Steady Drift
Abstract
We propose a comprehensive experimental study of underlying mechanisms of propeller-appendage-hull interactions in steady drift conditions of a submerged vehicle. The main objectives of the research are: 1) to understand the fundamental mechanisms of the propeller wake instability in off-design conditions, 2) to assess the type and degree of influence that hull perturbation, onset flow unsteadiness, free surface and drift angle exert on the wake evolution, 3) to study the transient suction forces and moments and the effects on propeller performance in off-design conditions, 4) to understand the underlying mechanisms of the vehicle’s response to propeller lateral forces and related moments due to off-design operations, and 5) to collect archival quality experimental data, including detailed flow measurements by advanced optical techniques, hull-pressure measurements, force and moment measurements on propeller and hull and free surface elevation measurements, to assess the capability of numerical methods for the prediction of the propeller effects in off-design conditions. The proposed efforts are aligned with the Platform Design and Survivability focus area of the US Naval and Marine Corp S&T Strategic Plan. The research will be conducted in collaboration with the University of Iowa (Prof. P. Carrica), the George Washington University (Prof. E. Balaras), and the University of Minnesota (Prof. K. Mahesh). The project outcome includes new knowledge on propeller hydrodynamics, state-of-the-art experimental techniques and data analysis methods, comprehensive experimental database for CFD validation and conference/journal papers.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 09, 2018
- Source ID
- N629091912001
Entities
People
- Mario Felli
Organizations
- Consiglio Nazionale delle Ricerche
- Office of Naval Research
- United States Navy