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Keywords: Swirl
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Proceedings Papers

Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT15A006, June 13–17, 2022
Paper No: GT2022-79594
... swirl gas turbine internal cooling inlet shape Abstract In the present work a simulation is conducted by CFD to predict the cooling performance in a chamber with a swirl motion using nine shapes of injection entrances. The injection entrances are with different cross sections...
Proceedings Papers

Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T03A012, June 13–17, 2022
Paper No: GT2022-82583
... to model swirling turbulent combustion of CH 4 /H 2 blends for gas turbine engine combustors. FGM characterizes the extent of reaction using a reaction progress variable typically defined as a weighted sum of some representative product species of hydrocarbon combustion like CO and CO2. With H 2 blending...
Proceedings Papers

Proc. ASME. GT2022, Volume 3B: Combustion, Fuels, and Emissions, V03BT04A026, June 13–17, 2022
Paper No: GT2022-82601
... chemistry solution is preferred to model flashback. This paper describes the use of a finite rate chemistry model to predict flashbacks in a turbulent premixed combustor in this work. The configuration used is a swirl stabilized combustor (SimVal) from National Energy Technology Laboratory. The current...
Proceedings Papers

Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT15A007, June 13–17, 2022
Paper No: GT2022-79595
... swirl rough heat transfer pressure gas turbine Abstract In the present study the effects of ribbed and grooved walls of swirl cooling chamber on heat transfer and fluid flow characteristics are investigated. This study presents ten roughened wall shapes that are compared with a smooth...
Proceedings Papers

Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 543-552, June 11–15, 2012
Paper No: GT2012-69397
... New combustion concepts towards lean burn aim at reducing peak temperatures and therefore emissions, especially nitrogen oxides. High swirl is required in order to enhance the mixing of fuel and air and thus, improve combustion and flame stability. In a numerical investigation of a turbine vane...
Proceedings Papers

Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 1899-1912, June 11–15, 2012
Paper No: GT2012-68209
... shaft, absolute and differential pressures and temperatures in the rotating frame of reference are measured via a telemetry system. Measurements of the discharge coefficient for sharp-edged and rounded shaft inserts at a variety of different flow conditions and with swirl added to the air upstream...
Proceedings Papers

Proc. ASME. GT2009, Volume 2: Combustion, Fuels and Emissions, 951-968, June 8–12, 2009
Paper No: GT2009-60230
... 23 02 2010 An unconfined strongly swirled flow is investigated for different Reynolds numbers using particle image velocimetry (PIV) and Large Eddy Simulation (LES) with a Thickened Flame (TF) model. Both reacting and non-reacting flow results are presented. In the LES-TF approach...
Proceedings Papers

Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1387-1396, June 9–13, 2008
Paper No: GT2008-50257
... to maintain stable operating conditions of the rotor, swirl-induced forces must be kept at a minimum in the sealing channels. Therefore, the influence of the permeable and flexible bristle pack of brush seals on the flow around the rotor surface must be known. In this paper the swirl flow in the cavities...
Proceedings Papers

Proc. ASME. GT2007, Volume 2: Turbo Expo 2007, 889-897, May 14–17, 2007
Paper No: GT2007-28286
... or sequestration, with potential impacts on the oxidizer used in the gas turbine. In this study the operation at atmospheric pressure of a small, optically accessible swirl-stabilized premixed combustor is investigated when burning fuels ranging from pure methane to shifted or filtered syngas mixtures. Both air...
Proceedings Papers

Proc. ASME. GT2002, Volume 5: Turbo Expo 2002, Parts A and B, 871-878, June 3–6, 2002
Paper No: GT2002-30491
...Proceedings of ASME Turbo Expo 2002 y Chert k-s turbulence model. Even without struts, inlet swirl higher than recovery of able to redi cylindrical performan KEYWORD diffuser a NOMENCL A cro AR are c ab Cp pre h inl k tur L dif p pre r rad c to re c al s g st l e Proceedings of 8 ° is found...
Proceedings Papers

Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 163-170, June 14–17, 2004
Paper No: GT2004-53373
... coefficient. These trends are exacerbated with an increasing inlet swirl angle. The preliminary numerical predictions captured the general trends of the flow but could not capture the extent of the reversed flow, leading to over-prediction of the effective area ratio, E, and under-prediction of the loss...
Proceedings Papers

Proc. ASME. GT2004, Volume 1: Turbo Expo 2004, 351-360, June 14–17, 2004
Paper No: GT2004-53524
... Copyright © 2004 by ASME ormed at scaled operating conditions. It was found that fuel ement is governed by the presence or absence of a culation zone inside the swirl cup and hence by the swirl e of the airflow. Analysis of temporal aspects of the spray ed the existence of droplet clusters. Configurations...
Proceedings Papers

Proc. ASME. GT2005, Volume 2: Turbo Expo 2005, 757-766, June 6–9, 2005
Paper No: GT2005-69111
... 03 11 2008 An experimental work was carried out on confined swirling flows under non-combusting conditions in a reverse flow annular gas turbine combustor. Flow measurements with a five hole pitot probe are carried out in a flow apparatus of a geometrical configuration similar...
Proceedings Papers

Proc. ASME. GT2006, Volume 1: Combustion and Fuels, Education, 853-865, May 8–11, 2006
Paper No: GT2006-91216
... 11 09 2008 This paper presents the results of numerical investigations of a turbulent, swirling and recirculating flow without combustion inside a reverse flow gas turbine combustor. In order to establish the characteristics of fuel distribution patterns of the fuel spray injected...
Proceedings Papers

Proc. ASME. GT2006, Volume 6: Turbomachinery, Parts A and B, 1-8, May 8–11, 2006
Paper No: GT2006-90017
... 15 09 2008 An experimental study has been undertaken on a 3-stage entraining diffuser with a distorted inlet flow. Two different circular-to-slot transition ducts were used as driving nozzles. Both transition ducts included a 90 degree bend. Varying degrees of inlet swirl were also...