We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Predicting Thrust Loss of Ship Propellers Due to Ventilation and Out-of-Water Effect.
- Authors
Kozlowska, Anna M.; Steen, Sverre; Savio, Luca
- Abstract
This article presents a propeller ventilation model that is tuned on experiments performed in open water condition in a towing tank. The main purpose of performing the experiments was to obtain more data at higher advance numbers for validation purposes and to make a calculation model for thrust and torque loss due to freesurface proximity. Tests were performed at different draughts. For each draught, the propeller was tested at different propeller speeds n = 9; 12; 16; and; 16 Hz at advance number in the range from J = 0 to J = 1.0. The different advance numbers were obtained at different propeller speeds so that for the same advance number, different propeller thrust values were tested, so that the effect of propeller loading can be seen independently from the speed of advance J. The main focus of this article is to explain and validate a prediction model for thrust loss due to ventilation and out-ofwater effect.
- Subjects
VENTILATION; HYDRODYNAMIC impact on ships; TOWING basins; MATHEMATICAL models of hydrodynamics; SHIP hydrodynamics; MARINE equipment
- Publication
Journal of Ship Research, 2017, Vol 61, Issue 4, p198
- ISSN
0022-4502
- Publication type
Article
- DOI
10.5957/JOSR.170004