Abstract
The paper reports computations of the flow and heattransfer from a round jet impinging onto a concave semicircular surface, designed to reproduce important flow features found in internal turbine blade cooling applications. Linear and non-linear eddy-viscosity models are applied, with wall-functions to cover the near-wall layer, and are shown to capture the overall flow characteristics. The standard, loglaw based, form of wall-function is found to be inadequate in predicting the heat-transfer, and a more advanced form developed at Manchester (the AWF) is also tested. The exact way in which convective terms are approximated in this latter approach is shown to be crucial, and a form is presented which leads to stable and reasonably accurate solutions.
Original language | English |
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Title of host publication | 7th European Turbomachinery Conference, Athens |
Pages | 1305-1310 |
Number of pages | 6 |
Publication status | Published - Aug 2007 |
Event | 7th European Turbomachinery Conference, Athens - Duration: 1 Jan 1824 → … |
Conference
Conference | 7th European Turbomachinery Conference, Athens |
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Period | 1/01/24 → … |