DURIP TIME-RESOLVED UNSTEADY FLOW FIELD MEASUREMENTS FROM DENSE LAGRANGIAN PARTICLE TRACKING
Abstract
Time-resolved flow field measurements in unsteady turbulent flows is of interest, for example, for the estimation of pressure fields, for the determination unsteady aerodynamic loads on structures and sources of aeroacoustic noise. Such measurements are also needed to increase the prediction capability of advanced numerical methods for turbulent flows by providing accurate experimental validation data sets. A newly developed 4D Particle Tracking Velocimetry (PTV) technique is capable of highly accurate and dense velocity field measurements in a flow volume via reconstructing a large amount of Lagrangian particle tracks from a time-series of particle images. The biggest advantage of the 4D PTV technique is its ability to provide relevant measures for local and global velocity statistics at high spatial and temporal resolution. The 4D-PTV, a new state- of-the-art optical system for flow visualization and measurement, measures instantaneous, time-resolved, three-dimensional flow filed. In addition, the 4D-PTV system will be able to generate acceleration data with accuracy suitable for the extraction of 3D pressure distributions on surfaces as well as in the outer flow filed. The instrumentation will enable new cross disciplinary collaborations not only among researchers at UTRGV but also with other academic institutions. The instrumentation will provide extraordinary level of access to the details of the physics of turbulent flows, facilitating fundamental and applied research with pronounced impact in the field of unsteady aerodynamics.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 20, 2023
- Source ID
- FA95502210540
Entities
People
- Isaac Choutapalli
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Texas Rio Grande Valley