High-Fidelity Multi-Phase Sharp-Interface Code Development and V&V for High Fr Small Craft FSI and MDO
Abstract
ABSTRACT: Design and operation of high-speed vessels is challenging since hydrodynamic analysis requiresmulti-phase flow often including cavitation/ventilation; required tradeoff between weightminimization and structural strength; and limited seakeeping ability. Global and localloads/response are important factors for structural design and operational limitations includingstatic and dynamic instability.Current structural design methods for high speed naval craft rely heavily on empiricism. Thoughthese methods have been employed reliably for a number of years, it is likely that an unknownlevel of conservatism exists in the prediction of both global and local impact loads to ensure thevessels structural design is robust, and to better understand the risk of reducing structure. Theobjectives and approach of the proposed research focus on (1) continued work on computationalapproaches for predicting motions and loads in Reynolds number ranges relevant to existinghigh-performance naval craft, with emphasis on robust and rigorous validation based onexperimental results; (2) investigate/elucidate areas of physics relevant to (1) above such as fluidstructure interactions, multiphase flow, experiment/computation at higher Reynolds numbers,spray root physics/hydrodynamics; (3) exploration/characterization of novel hull forms, usingapproaches from (1) or (2) above (including but not limited to higher Reynolds numbers than in(1)). All proposed approaches contain both experimental and computational elements viaappropriate teaming arrangements.This project is expected to advance our physical understanding of the dynamic response of highspeedcraft in seas, and to offer new opportunities for increased structural design optimization.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 29, 2020
- Source ID
- N000142012259
Entities
People
- Frederick Stern
Organizations
- Office of Naval Research
- United States Navy
- University of Iowa