PhD Thesis - staffweb - University of Greenwich

APPENDIX 2 : Journal Paper "Case Study : An Incremental Approach to Re-Engineeringa Legacy FORTRAN C.F.D. Code in C++", Ewer J., Knight B. and Cowell D.,Advances in Engineering Software, Vol. 22, pp 153-168, 1995Figure 16 :Visualisation of flow vectors for natural convection.The corresponding graph plot (Figure 17) shows the vertical velocity componentsacross the width of the domain. This was the indicated slice of the natural convectionbuoyancy driven flow from Figure 16. These results have some minor differences becausethe simulation has not been run to full convergence. It should be noted that combined heattransfer and flow simulations are particularly difficult to converge because of thecomplexities inherent in the coupling between the heat and flow properties. Often suchcomplex simulations are partially or significantly transient (with oscillatory flow behaviour)although this case has only been run in steady state mode.It should be noted that the solution comparisons made in this section are notintended to validate the re-engineered code against either experiment or theory but rather tovalidate that the re-engineering process has not significantly altered the code behaviour.Appendix 11.2 Page 142-23 23