Measurement of Eddy Viscosity Operator in Subsurface and Near-surface Turbulent Wakes Using Three-di
Abstract
Approved for Public ReleaseWe propose the collaborative investigation of the eddy viscosity/diffusivity tensor of the subsurface and, near-surface turbulent wake of a bluff body through a combined experimental measurement (Led by Professor Mory Gharib and Dr. Cong,Wang at Caltech) and numerical simulation approach (led by Professor Ali Mani at Stanford). The three-dimensional flow field of the,turbulent wake will be experimentally measured using the three-dimensional defocused digital particle image velocimetry (DDPIV). The, experimental measurements will be integrated with the numerical macroscopic forcing method (MFM) to calculate the eddy viscosity/di,ffusivity tensor. The proposed collaborative research effort includes the development, validation, and deployment of the proposed DD,PIV+MFM technique in both the subsurface and free surface turbulent wake. The research outcome will provide physical insights of the, dynamic entrainment process in the wake and generate key quantitative guidelines for the modeling of surface flow hydrodynamics, wh,ich are of broad implications in wide range of Naval applications. The developed methodology also paves the way for reduced-order ch,aracterization/modeling of other flow fields of Navy interest.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 08, 2022
- Source ID
- N000142212233
Entities
People
- Morteza Gharib
Organizations
- California Institute of Technology
- Office of Naval Research
- United States Navy