Network flow split design of combustor in gas turbine

Abstract

Abstract:

A gas turbine combustor is modeled and designed using 1-D network method, and the result is validated compared with the result of 3-D numerical simulation. The network method divides the combustor into a series of 1-D sub-flows, the 1-D network is solved with pressure equations and the sub-flows are linked together in the overall governing equations to obtain a complete solution of the entire flow field. In this way, pressure-drops and flow-splits may be obtained throughout the region of interest. A 1-D network is applied to model and optimize the specific combustor with targets include mass flow split of primary holes and cooling holes and the total pressure drop which is equal to 4.2%. Finally, numerical simulation of this new combustor is carried out and the results are compared with 1-D network, indicating that the targets are achieved well. Results of 1-D network match well with those of numerical simulation, demonstrating the accuracy and reliability of 1-D network approach in the design of complex combustors.

Key words: gas turbine, combustor, 1-D network, flow split, combustion

CLC Number:

TK472
V231

WU Jingfeng, ZHOU Yanpei. Network flow split design of combustor in gas turbine[J]. .

References

[1] LEFEBVRE A H. Gas Turbine Combustion[M]. London: Taylor, 2010.

[2] DHANUKA S K, TEMME J E, DRISCOLL J F. LEAN-LIMIT combustion instabilities of a lean premixed prevaporized gas turbine combustor[J]. Proceedings of the Combustion Institute, 2010, 33（2）: 2961-2966.

[3] JONG HL, CHUNG HJ,YOUNG J C, et al. Experimental study on flame structure and temperature characteristics in a lean premixed model gas

turbine combustor[J]. Journal of Mechanical Science and Technology,2005, 19(6):1366-1377.

[4] GOSSELIN P, DECHAMPLAIN S K. Three Dimensional CFD Analysis of a Gas Turbine Combustor[R]. AIAA Paper 2000-3466.

[5] GORDON R, LEVY Y. Optimization of wall cooling in gas turbine combustor through three-dimensional numerical simulation[J]. Journal of Engineering for Gas Turbines and Power, 2005, 127(4):704-723.

[6] MONGIA H C. Combining Lefebvre’s Correlations with Combustor CFD[R]. AIAA Paper 2004-3544，2004.

[7] BLACK D L, SMITH C E. Transient Lean Blowout Modeling of an Aero Low Emission Fuel Injector[R]. AIAA Paper 2003-4520, 2003.

[8] GOKULAKRISHNAN P, BIKKANI R, KLASSEN M S, et al. Influence of Turbulence-Chemistry Interaction in Blow-out Prediction of Bluff-Body Stabilized Flames[R]. AIAA Paper 2009-1179, 2009.

[9] BOILEAU M, STAFFELBACH G, CUENOT B, et al. LES of an ignition sequencein a gas turbine engine[J]. Combustion and Flame, 2008, 154(2):2-22.

[10] JONESW P, TYLISZCZAK A. Large eddy simulation of spark ignition in a gas turbine combustor[J]. Flow Turbulence and Combustion, 2010,85(3):711-734.

[11] CAPURRO M. Development of a Design Tool for Modern Gas Turbine Combustors and Commissioning of a Gas Turbine Combustion Research Laboratory[D]. Ottawa: Carleton University, 2008.

[12] SAWYER J W. Sawyer’s Gas Turbine Engineering Handbook[M].Norwalk：Turbomachinery International Publications, 1985.

[13] SARAVANAMUTTOO H, ROGERS G, COHENH. Gas Turbine Theory[M]. New York: Prentice Hall, 2001.

[14] GAUTHIER J E D. Gas Turbine Combustion[D]. Ottawa: Carleton University, 2005.

[15] PETER J. Stuttaford. Preliminary Gas Turbine Combustor Design Using aNetwork Approach[D]. Bedfordshire: School of Mechanical Engineeringof Cranfield, 1997.