Direct measurement of all components of pressure-related terms in Reynolds stress transport equation budget for a cavity shear layer flow
Abstract
Characterization of the pressure-related turbulence terms including pressure~rate-of-strain, pressure diffusion and velocity~pressure-gradient tensor in the Reynolds stress transport equation in canonical turbulent flows is of critical importance for calibrating and improving turbulence models for RANS (Reynolds-Averaged Navier Stokes) based flow simulation. Recent work of Liu and Katz (2018, AIAA Journal, https://doi.org/10.2514/1.J056168) based on planar-PIVclearly shows the complex nature of the pressure related terms and their substantial impact on the dynamics of turbulence transport throughout a shear layer flow past an open cavity. The work also calls for a full three-dimensional characterization of the pressure-related terms around the cavity trailing corner. In response to this call, this proposal presents a research plan aiming to directly measure all components of the pressure-related terms in the context of Reynolds stress budget for a turbulent shear layer flow past a 2D cavity, utilizing time resolved tomographic PIV (Particle Image Velocimetry) coupled with a non-intrusive pressure measurement technique. The successful implementation of the plan will not only place the conjectures regarding the effect of the third component fluctuation on inter-component energy transfer into a closure, but also provide a high quality experimental database consisting of all budget terms in RANS framework that can be used for CFD validation and turbulence model improvement.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 23, 2019
- Source ID
- N000141912020
Entities
People
- Xiaofeng Liu
Organizations
- Office of Naval Research
- Salk Institute for Biological Studies
- United States Navy