On Numerical Residuals and Physical Instabilities in Incompressible Steady-State Fluid Flow Calculations
Abstract
This report results from a contract tasking Vassilios Theofilis as follows: The contractor proposes to perform a three-dimensional linear instability analysis of the nonparallel steady compressible two-dimensional basic flow, which develops inside an open cavity of arbitrary aspect ratio driven by a constant free-stream velocity. The objective of the study is to determine the environmental conditions at which the flow becomes unstable to three-dimensional, periodic in the lateral direction, small-amplitude disturbances. Identification of the spatial structure of both stationary and traveling instabilities as well as prediction of the frequencies of the unstable traveling modes is paramount to devising methods for control of these instabilities. The study will be performed along the lines of his analogous work on the classic incompressible lid-driven cavity; initially steady incompressible and compressible basic states will be determined and compared with existing- and independently-performed work-in-progress; subsequently the nonparallel linear instability analysis of this state will be performed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 20, 2000
- Accession Number
- ADA379181
Entities
People
- Vassilios Theofilis