Measurements and Calculations of a Separating Boundary-Layer and the Downstream Wake,
Abstract
A combination of total-head pressure, static-pressure, hot-wire and flying hot-wire probes have been used to quantify the pressure and velocity characteristics of the flow in the vicinity of a trailing flap whose angle of incidence results in boundary layer separation, a large region of recirculating flow and a curved downstream wake. A two-dimensional form of the time-averaged Navier-Stokes equations have been solved numerically with a finite difference grid obtained by a solution of Laplace equation and the results compared with the measurements. The general flow patterns are well calculated ad the results are in close accord in some regions of the flow. In others, including the near-wall region and near wake, significant discrepancies exist and numerical tests suggest that these are due to numerical assumptions although the two-equation turbulence model and related wall functions are also likely to be deficient. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1983
- Accession Number
- ADP001936
Entities
People
- B. E. Thompson
- D. Adair
- J. H. Whitelaw
Organizations
- Imperial College London