Status of the NASA/Virginia Tech Benchmark Experiments for CFD Validation

摘要

A new study of low Mach number, high Reynolds number flow of a plane turbulent boundary layer over wall-mounted bumps is underway. The goal is to produce detailed experimental data sets of smooth wall flows with various levels of separation that, for the first time, meet the most exacting requirements of CFD validation as per Oberkamp and Smith [1]. To attain this goal, an intensive research program, collaborative with NASA Langley Research Center, is underway that brings together experts in experiments, computations and CFD validation. This effort involves detailed measurements and calculations needed for full uncertainty quantification, experimental configuration design, and extensive documentation of the flow boundary conditions and boundary condition sensitivities. In this paper, an overview of the status of the project is presented, including details of the experimental configuration and key findings that establish the configuration as well suited for the needs of turbulence modeling validation for smooth body separation.