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- W3174144310 abstract "A CFD analysis is employed to the three-dimensional, recirculating transonic, turbulent flow in the exhaust hood of low-pressure steam turbines, using the general CFD package FLOW3D. A simplified, and rather inexpensive method is proposed for taking the exhaust hood-turbine interaction into account. Results are compared with the measured data. Comparisons with measurements show that many important features of the flow can be predicted very well, qualitatively. Although the quantitative comparisons between measurements and predictions show that there are discrepancies, an acceptable overall accuracy, to our opinion, can still be obtained. One shall also consider that there is a great amount of potential for increasing the accuracy by e.g., using a finer grid, more accurate geometry representation (struts etc.), a better turbulence model (e.g. the Reynolds Stress Model) and a real gas modelling of the steam with wet steam models (instead of the present ideal gas modelling). Although the quantiative accuracy is not perfect, one can confidently predict the trends, as also demonstrated by comparisons with measurements. Therefore, we find that the CFD analysis provides a very valuable tool for the exhaust hood design. (orig.)" @default.
- W3174144310 created "2021-07-05" @default.
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- W3174144310 date "1995-12-31" @default.
- W3174144310 modified "2023-09-27" @default.
- W3174144310 title "Modelling the flow in the exhaust hood of steam turbines under consideration of turbine-exhaust hood interaction" @default.
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