Implementation of subsonic boundary conditions in compressible flow codes

Gollan, Rowan (2001). Implementation of subsonic boundary conditions in compressible flow codes B.Sc Thesis, School of Engineering, The University of Queensland.

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Author Gollan, Rowan
Thesis Title Implementation of subsonic boundary conditions in compressible flow codes
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2001
Thesis type B.Sc Thesis
Total pages 93
Language eng
Subjects 09 Engineering
Formatted abstract

This thesis describes the development and implementation of subsonic boundary conditions in compressible flow codes. A one-dimensional compressible flow solver was written to be used as a testing ground for the subsonic boundary conditions. This flow solver is a finite-volume formulation that computes the transient solution to quasi-one-dimensional flows with moderate area change.

A number of subsonic boundary conditions were researched in the literature and then implemented into both one-dimensional and two-dimensional flow solvers. The code MB_CNS was used for the two-dimensional implementations. The boundary conditions tested and successfully implemented include; a resevoir inflow boundary condition, a non-reflecting inflow boundary condition, a static pressure outflow boundary condition and a non-reflecting outflow boundary condition.

The reservoir inflow boundary condition was extended to the two-dimensional code, tested and then applied. This boundary condition was used to model the injection of gas at the surface of a blunt body flow field. In particular, the MUSES-C capsule experiments with gas injection, performed in the X-2 expansion tube, were modelled. The other application of the reservoir boundary condition was to simulate an opposing jet into oncoming supersonic flow.

Keyword Sobsonic bondary conditions
Compressible flow codes
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
Created: Wed, 12 Jun 2013, 09:40:12 EST by Mr Yun Xiao on behalf of Scholarly Communication and Digitisation Service