Global and Local Flow Measurement System for Modeling and Validation Experiments for Free-running ONRT Surface Combatant Maneuvering in Waves
Abstract
The proposed equipment will significantly enhance the existing and planned DoD (ONR) funded research.The wave basin at the University of Iowa is an excellent facility that is capable of detailed measurement of ship dynamics and maneuvering performance in waves. The requested addition of the global/local flow measurement system will significantly augment the existing capabilities and allow the establishment of an unique experimental approach that combines free running 6 degree of freedom experiments followed by semi-captive experiment. The 4DPTV (4-Dimensional Particle Tracking Velocimetry) is capable of probing the spatial distribution of velocity vectors of the flow field overcoming the temporal resolution of the characteristic turbulence length scales of the measured flow fields. The 4DPTV will be used during the semi-captive experiments for simultaneous acquisition of global forces/moments and detailed local flow. The concept and design of the requested addition were developed based on the urgent needs to further our understanding of the detailed flow field while a ship maneuvers in waves. If funded, this unique approach and facility will greatly enhance and enable the research work being funded (and planned follow-on efforts to be funded) for detailed flow studies during ship maneuvering in waves which cannot be obtained before. The measured global force/moment and detailed local flow will be essential for researchers to gain better insights of the flow physics and are critical for validation of computation models/tools for ship maneuvering in waves.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 06, 2021
- Source ID
- N000142112308
Entities
People
- Frederick Stern
Organizations
- Office of Naval Research
- United States Navy
- University of Iowa