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Impact of Swirl Flow on the Cooling Performance of an Effusion Cooled Combustor Liner
Volume 4: Heat Transfer, Parts A and B, 2012An experimental study on combustor liner cooling of modern direct lean injection (DLI) combustion chambers using coolant ejection from both effusion cooling holes and a starter film has been conducted. The experimental setup consists of a generic scaled three sector planar rig in an open loop hot gas wind tunnel, which has been described earlier in ...
Wurm, B. +3 more
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Predictions of Effusion Cooling With Conjugate Heat Transfer
Volume 5: Heat Transfer, Parts A and B, 2011This work involves CFD conjugate heat transfer modelling of the geometrical design influence on effusion cooling. Experimental data was modelled for the overall effusion film cooling effectiveness using Nimonic 75 walls with imbedded thermocouples. The Fluent CFD code was used to investigate the experimental configuration for a 10×10 square array of ...
Habeeb Idowu Oguntade +4 more
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CMC rocket combustion chamber with effusion cooling
54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law, 2003New propulsion systems play a key role for future space transportation systems (STS). While high efficiency with respect to specific impulse is mandatory aspects concerning system design (complexity, manufacturing, weight), operating aspects (reusability, maintenance, high reliability and safety) and cost reduction attract increasing attention.
Hald, H. +3 more
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S-Bend Diffuser With Passive Effusion Cooling
Volume 5B: Heat Transfer, 2014This paper presents the results of an experimental study of passive effusion cooling in an S-bend channel with a diffuser. A previous paper showed the results for cold primary flow [1]. This paper deals with hot primary flow. The results show that different levels and locations of effusion injection significantly affect the primary flow field and the ...
B. C. N. Ng, A. M. Birk
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Effusion Cooled Combustor Liner Tiles With Modern Cooling Concepts: A Comparative Experimental Study
Volume 5B: Heat Transfer, 2016Advanced combustion techniques in aero engines require highly effective cooling schemes of combustor liners. One parameter affecting the cooling performance is the geometry of the cooling holes themselves. So far, the freedom in the design of cooling holes was limited due to the manufacturing techniques.
Jackowski, Thomas +4 more
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International Journal of Heat and Mass Transfer, 2019
Abstract This paper numerically investigates the effects of the film cooling hole diameter on the flow and heat transfer characteristics of the impingement/effusion cooling and double swirl/effusion cooling. Impingement jet arrays at three jet Reynolds numbers, 10,000, 15,000, 20,000, are employed.
Junfei Zhou +3 more
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Abstract This paper numerically investigates the effects of the film cooling hole diameter on the flow and heat transfer characteristics of the impingement/effusion cooling and double swirl/effusion cooling. Impingement jet arrays at three jet Reynolds numbers, 10,000, 15,000, 20,000, are employed.
Junfei Zhou +3 more
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Turbulence Modeling for the Numerical Simulation of Film and Effusion Cooling Flows
Volume 4: Turbo Expo 2007, Parts A and B, 2007RANS simulations are known to suffer from serious deficiencies in the prediction of jet in a crossflow (JCF) because of the high complexity of this kind of flow. Particularly, the coherent structures resulting from the interaction of the two flow streams are characterized by a highly unsteady and anisotropic behavior which hardly stresses the ...
FACCHINI, BRUNO, Bacci A.
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Effusion cooling in rocket combustors applying fibre reinforced ceramics
35th Joint Propulsion Conference and Exhibit, 1999Since 1994 DLR has focused its efforts on combustion chamber technologies within the internal program "High Pressure Rocket Propulsion" (HDR). The main emphasis lays on advanced cooling technologies and especially effusion cooling applying fibre reinforced ceramics as porous media and hydrogen as cooling fluid.
Serbest, E. +4 more
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Experimental investigation of effusion and transpiration air cooling for single turbine blade
Applied Thermal Engineering, 2021Bong Jae Lee, Jungho Lee, Jin Sub Kim
exaly