Analysis and Design Tools for Marine Propulsors
Abstract
Computationally efficient methods for the analysis or design of marine propulsors are furtherdeveloped and improved. The main objectives of this proposal are to: (a): further improvepotential based methods (vortex-lattice or panel methods) by coupling them with Reynolds-Averaged Navier-Stokes (RANS) methods, so that they can predict unsteady propeller/hullinteraction in the case of straight ahead as well in the case of maneuvering conditions of the ship,and (b): apply a method based on the viscous vorticity equation (VISVE) to predict viscousflows around propeller blades, and extend it in the case of cavitating flow, by using the mixturemodel, with the ultimate goal to be able to predict sheet as well as other types of cavitation (tipvortex or mid-chord bubble). The methods under objective (a) will be modified so that unsteadynon-periodic flows around propellers can be handled with the fully unsteady 3-D effective wakebeing determined via coupling with RANS, used to model the flow around the hull; whileVISVE, under objective (b), will be modified to model wetted or cavitating viscous flows aroundpropeller blades, with significantly smaller number of grids/cells (concentrated very close to theblade), and thus significantly shorter computational solution times, as well as much shorter timesdevoted to the construction of the grids
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 10, 2018
- Source ID
- N000141812276
Entities
People
- Spyridon Kinnas
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin