Reference number : GC-2017-Q4-01491, amendment number : , agreement type : G, recipient legal name : Qiu, Wei (Memorial University of Newfoundland), recipient country : CA, recipient province : nan, recipient city : Newfoundland and Labrador|Terre-Neuve-et-Labrador, recipient postal code : nan, program name english : Engage Grants for universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Propeller cavitation is of major concern for ships since it is the predominant source of propeller-generated_x000D_
noise and vibration. Very limited efforts have been made to understand the impact of propeller manufacturing_x000D_
tolerances on the propeller performance. The majority of propellers manufactured today are hand-finished from_x000D_
castings which are roughly machined using Computer Numerical Control (CNC). Manual grinding of propeller_x000D_
surfaces introduces inaccuracies and deviations from design, which could lead to degradation of propeller_x000D_
performance in terms of efficiency, cavitation and noise. Ship screw propellers are typically manufactured to_x000D_
meet the ISO 484 Standard, which specifies the manufacturing tolerances._x000D_
As the key propeller manufacturer in Canada, Dominis Engineering needs the evidence that the high precision_x000D_
of hydrodynamic surfaces, which can be achieved by the technology of CNC machining to final form and_x000D_
finish, improves propeller performance. The investigation into propeller manufacturing tolerances will be_x000D_
carried out using computational fluid dynamics (CFD) simulations. The proposed research will focus on 2-D_x000D_
CFD simulations of a full-scale modified NACA 66 section, considering the variations in geometry (chord_x000D_
length, camber and thickness) due to manufacturing tolerances._x000D_
The outcomes of the project will enable Dominis to develop improved processes of propeller manufacturing in_x000D_
terms of efficiency of production and high precision for reduced noises and vibrations as well as increased fuel_x000D_
efficiency. It will also enable Dominis to further support the Canadian Shipbuilding Strategy and Canada's_x000D_
global competiveness in marine propeller manufacturing, which will ultimately benefit the Canadian economy., program purpose french : Propeller cavitation is of major concern for ships since it is the predominant source of propeller-generated_x000D_
noise and vibration. Very limited efforts have been made to understand the impact of propeller manufacturing_x000D_
tolerances on the propeller performance. The majority of propellers manufactured today are hand-finished from_x000D_
castings which are roughly machined using Computer Numerical Control (CNC). Manual grinding of propeller_x000D_
surfaces introduces inaccuracies and deviations from design, which could lead to degradation of propeller_x000D_
performance in terms of efficiency, cavitation and noise. Ship screw propellers are typically manufactured to_x000D_
meet the ISO 484 Standard, which specifies the manufacturing tolerances._x000D_
As the key propeller manufacturer in Canada, Dominis Engineering needs the evidence that the high precision_x000D_
of hydrodynamic surfaces, which can be achieved by the technology of CNC machining to final form and_x000D_
finish, improves propeller performance. The investigation into propeller manufacturing tolerances will be_x000D_
carried out using computational fluid dynamics (CFD) simulations. The proposed research will focus on 2-D_x000D_
CFD simulations of a full-scale modified NACA 66 section, considering the variations in geometry (chord_x000D_
length, camber and thickness) due to manufacturing tolerances._x000D_
The outcomes of the project will enable Dominis to develop improved processes of propeller manufacturing in_x000D_
terms of efficiency of production and high precision for reduced noises and vibrations as well as increased fuel_x000D_
efficiency. It will also enable Dominis to further support the Canadian Shipbuilding Strategy and Canada's_x000D_
global competiveness in marine propeller manufacturing, which will ultimately benefit the Canadian economy., agreement title english : Effect of Manufacturing Tolerances on Performance of Marine Propellers, agreement title french : Effect of Manufacturing Tolerances on Performance of Marine Propellers, agreement number : EGP, agreement value : 25000.0, agreement start date : 2018-03-07, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada