The focus of this thesis is on modelling the effects three-dimensionality in a shock wave boundary layer interaction (SWBLI). An experiment performed by Boyce & Hillier in 2000 provides data as a source of validation for the simulation. The main aims of the thesis are to: demonstrate an understanding of SWBLI behaviour; develop a suitable model in agreement with the experimental data, and; provide a way forward for further research in the field.
The experiment consisted of a cowl placed around a cylindrical centrebody in a flowfield to externally generate a shock wave which impinged on the boundary layer of the centrebody, resulting in a SWBLI. The cowl was vertically misaligned to develop the three-dimensional flow. The fluid used in the flow was nitrogen, with approximate initial freestream conditions of Mach 9, and Reynoldfs number of 50 X 106 m-1.
Review of relevant literature provided a solid understanding of the concepts and characteristics of SWBLIs. The model was simulated using the commercial computational fluid dynamics program CFD++ with the shear stress transport turbulence model and Reynoldfs-averaged Navier-Stokes equations.
A coarse mesh, with 1.6 million cells, provided an initial solution to compare with the experimental data. This was then used as a reference point in a grid sensitivity study to determine the effectiveness of different sized meshes in simulating the experiment. A finer mesh, with 19.6 million cells demonstrated good agreement with the experimental heat flux and surface pressure data. This is a significant step forward in developing a predictive model of SWBLIs to be used in the design process of hypersonic vehicles.