Entropy production analysis of swirling diffusion
combustion processes

doi:10.1007/s11708-009-0058-1

Front. Energy

2010, Vol. 4

Issue (3) : 326-332 https://doi.org/10.1007/s11708-009-0058-1

Research articles

Entropy production analysis of swirling diffusion combustion processes

Deodat MAKHANLALL,Linhua LIU,

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

Download: PDF(254 KB)
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks

Abstract A critical factor in the design of combustion systems for optimum fuel economy and emission performance lies in adequately predicting thermodynamic irreversibilities associated with transport and chemical processes. The objective of this study is to map these irreversibilities in terms of entropy production for methane combustion. The numerical solution of the combustion process is conducted with the help of a Fluent 6.1.22 computer code, and the volumetric entropy production rate due to chemical reaction, viscous dissipation, and mass and heat transfer are calculated as post-processed quantities with the computed data of the reaction rates, fluid velocity, temperature and radiative intensity. This paper shows that radiative heat transfer, which is an important source of entropy production, cannot be omitted for combustion systems. The study is extended by conducting a parametric investigation to include the effects of wall emissivity, optical thickness, swirl number, and Boltzmann number on entropy production. Global entropy production rates decrease with the increase in swirl velocity, wall emissivity and optical thickness. Introducing swirling air into the combustion system and operations with the appropriate Boltzmann number reduces the irreversibility affected regions and improves energy utilization efficiency.

Keywords entropy-based design radiation transfer swirl magnussen combustion-model

Issue Date: 05 September 2010

Cite this article:

Deodat MAKHANLALL,Linhua LIU. Entropy production analysis of swirling diffusion combustion processes[J]. Front. Energy, 2010, 4(3): 326-332.

URL:

https://academic.hep.com.cn/fie/EN/10.1007/s11708-009-0058-1
https://academic.hep.com.cn/fie/EN/Y2010/V4/I3/326

	Bejan A. Entropy Generation Through Heat and Fluid Flow. New York: Wiley, 1982
	Naterer G F, Camberos J A. Entropy-Based Design and Analysis of Fluid Engineering Systems. New York: CRC Press,Taylor & Fransis Group, 2008
	Som S K, Datta A. Thermodynamicirreversibilities and exergy balance in combustion processes. Progress in Energy and Combustion Science, 2008, 34(3): 351–376 doi: 10.1016/j.pecs.2007.09.001
	Datta A. Effects of gravity on structure and entropy generationof confined laminar diffusion flames. InternationalJournal of Thermal Science, 2005, 44(5): 429–440 doi: 10.1016/j.ijthermalsci.2004.10.003
	Nishida K, Takagi T, Kinoshita S. Analysis of entropy generationand exergy loss during combustion. In: Proceedingof the Combustion Institute, 2002, 29(1): 869–874 doi: 10.1016/S1540-7489(02)80111-0
	Yapici H, Kayatas N, Albayrak B, Basturk G. Numerical Calculation of local entropy generation ina methane-air burner. Energy Conversionand Management, 2005, 46: 1885–1919 doi: 10.1016/j.enconman.2004.09.007
	Liu L H, Chu S. X. Verificationof numerical simulation method for entropy generation of radiationheat transfer in semitransparent medium. Journal of Quantitative Spectroscopy and Radiative Transfer, 2007, 103(1): 45–56 doi: 10.1016/j.jqsrt.2006.07.004
	Magnussen B F, Hjertager B H. On mathematical models of turbulent combustion with special emphasison soot formation and combustion. In: 16thSymp (Int’l) on Combustion. The Combustion Institute, 1976
	Raghaven V, Gogos G, Babu V, Sundararajan T. Entropygeneration during the quasi-steady burning of spherical fuel particles. International Journal of Thermal Science, 2007, 46: 589–604 doi: 10.1016/j.ijthermalsci.2006.07.006

[1]	T. KARTHIKEYA SHARMA,G. AMBA PRASAD RAO,K. MADHU MURTHY. Control of peak pressures of an HCCI engine under varying swirl and operating parameters[J]. Front. Energy, 2016, 10(3): 337-346.
[2]	WANG Qikun, CHEN Kangmin. Numerical investigation of aerodynamic performance influenced by circumferentially pre-swirling coming flow on the crossover and de-swirling cascade of a multistage centrifugal compressor[J]. Front. Energy, 2007, 1(4): 435-440.
[3]	WANG Xibin, CHEN Wansheng, GAO Jian, JIANG Deming, HUANG Zuohua. Spray characteristics of high-pressure swirl injector fueled with alcohol[J]. Front. Energy, 2007, 1(1): 105-112.

Viewed

Full text

Abstract

Cited

Shared

Discussed