Large-eddy simulations of suboff-body propeller interactions at high Reynolds numbers
Abstract
We propose to perform high-fidelity, large-eddy simulations focusing on the interaction of the stern flow with the propulsor in a canonical submarine configuration. Understanding of this interaction is critical because the successful design or prediction of performance in terms of e?fficiency, vibration or cavitation of a propeller depends on the correct assessment of the hull flow. At the same time the hull flow changes significantly in the presence of thepropulsor. Although full-scale Reynolds numbers are not feasible we will consider modelscale Reynolds numbers at values that go beyond what has been considered today. We anticipate our findings to be useful to the naval technical community: i) as benchmark and reference datasets for the lower-?fidelity methods that are currently used in design, utilizingturbulence and skin-friction models from at plate boundary layers and isotropic turbulenceassumptions; ii) for performance assessment, gaining experience with the proposed high-?delity methods in the case of submersible hullforms and propulsors, will increase con?denceand reduce the cost and turnaround time for computations of novel, experimental hullforms.3
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 27, 2018
- Source ID
- N000141812671
Entities
People
- Ilias Balaras
Organizations
- George Washington University
- Office of Naval Research
- United States Navy