Browsing by Author "Olivier, Andre Jacobus"
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- ItemAn experimental and numerical investigation of vaporizer tubes associated with micro gas turbines(Stellenbosch : Stellenbosch University, 2015-03) Olivier, Andre Jacobus; Meyer, Chris J.; Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering.ENGLISH ABSTRACT: This study is an introductory investigation into vaporizer technology as implemented in micro gas turbines. Experimental investigations are aimed at the development of expectations concerning the internal flow structure though vaporizers by generating application specific flow maps. Consolidation of these maps with other experimental data suggests that annular flow leads to increased evaporation rates. In addition, it was discovered that flow structure is affected by the injection angle and air and fuel flow rates. An investigation into the numerical modelling of vaporizers is based on two phase flow theory using a flow structure approach. The numerical behaviour is observed for parametric variations to establish the impact of assumptions. A final numerical model is formulated with empirically determined coefficients with fair correlation to experimental data. The results of this study yield recommendations towards the implementation and analysis of vaporizers with applied use in micro gas turbines.