Boundary layer calculations for compressible flows

Stanbury, Gavin (2001). Boundary layer calculations for compressible flows B.Sc Thesis, School of Engineering, The University of Queensland.

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Author Stanbury, Gavin
Thesis Title Boundary layer calculations for compressible flows
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2001
Thesis type B.Sc Thesis
Supervisor Dr. Peter Jacobs
Total pages 110
Language eng
Subjects 09 Engineering
Formatted abstract

A boundary layer solver for compressible flows was to be devised with the aim of eventual integration into the IMOC solver. Freestream data was to be read from a file produced by an inviscid solution. The “BPBC” method uses a Crank-Nicholson implicit formulation and is solved using an explicit Newton linearized technique. Many schemes were investigated including the simple explicit and implicit schemes. The transformed box method was also attempted with little success. The final implementation draws on many elements of such codes and incorporates several extra features. In order to allow for boundary layer growth a variable grid thickness has been implemented. The method solves the Mangler transformed compressible turbulent boundary layer equations over an arbitrary wall shape. The algorithm is currently limited to laminar flow and fails under separated flow. Provision has been made for turbulent viscosity fields and density and viscosity variation with temperature found from the energy equation. Output has been compared successfully to the Blasius profile for multiple grids and flow regimes. Implementation has been performed entirely within Matlab using release 12 in such a way that porting to C will involve minimal effort. Typical execution time using a 32-bit 100MHz PC is in the order of 100 seconds. Upon completion, a file is written containing the physical location in space of the boundary layer profile.

Keyword Boundary layer calculations
Compressible flow
Additional Notes * Mechanical Engineering undergraduate theses. 2001

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
Citation counts: Google Scholar Search Google Scholar
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