Near-Wall Measurements on a High Reynolds Number Prolate Spheroid
Abstract
The high-Reynolds number prolate Spheroid (HIPRO) campaign was created to shed fundamental insights into turbulent boundary layers in the presence of curvature and pressure gradient. It is a 6:1 prolate spheroid that will be operated over a broad range of Reynolds numbers that can only be reached in large experimental facilities. The geometry and Reynolds number range challenge existing turbulent wall models for geometries that are relevant hydrodynamics and aerodynamics. Today, there are no detailed measurement of nearwall flow physics in such conditions to validate existing models and advance new models. During the first HIPRO phase of the project, we developed a series of compact (plenoptic) imagers for 3D time-resolved measurements that can be deployed from inside the specimen to measure near wall flows. We have demonstrated the technique with both particle tracking velocimetry and molecular tagging velocimetry. For this first campaign, we intend to deploy time-resolved particle tracking velocimetry with our plenoptic 3.0 imager in the mid-body hatch. Additionally, we will do a significant analysis of the data to refine subsequent deployments and gain first insights into turbulent boundary layer statistics.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 10, 2025
- Source ID
- N000142512243
Entities
People
- Philippe Bardet
Organizations
- George Washington University
- Office of Naval Research
- United States Navy