Login | Register

Numerical study of inflow equivalence ratio inhomogeneity on oblique detonation formation in hydrogen-air mixtures

Title:

Numerical study of inflow equivalence ratio inhomogeneity on oblique detonation formation in hydrogen-air mixtures

Fang, Yishen, Hu, Zongmin, Teng, Honghui, Jiang, Zonglin and Ng, Hoi Dick (2017) Numerical study of inflow equivalence ratio inhomogeneity on oblique detonation formation in hydrogen-air mixtures. Aerospace Science and Technology . ISSN 12709638 (In Press)

[img]
Preview
Text (application/pdf)
Ng-AST-2017.pdf - Accepted Version
Available under License Spectrum Terms of Access.
2MB

Official URL: http://dx.doi.org/10.1016/j.ast.2017.09.027

Abstract

In this study, numerical simulations using Euler equations with detailed chemistry are performed to investigate the effect of fuel-air composition inhomogeneity on the oblique detonation wave (ODW) initiation in hydrogen-air mixtures. This study aims for a better understanding of oblique detonation wave engine performance under practical operating conditions, among those is the inhomogeneous mixing of fuel and air giving rise to a variation of the equivalence ratio (ER) in the incoming combustible flow. This work focuses primarily on how a variable equivalence ratio in the inflow mixture affects both the formation and characteristic parameters of the oblique detonation wave. In this regard, the present simulation imposes initially a lateral linear distribution of the mixture equivalence ratio within the initiation region. The variation is either from fuel-lean or fuel-rich to the uniform stoichiometric mixture condition above the oblique shock wave. The obtained numerical results illustrate that the reaction surface is distorted in the cases of low mixture equivalence ratio. The so-called “V-shaped” flame is observed but differed from previous results that it is not coupled with any compression or shock wave. Analyzing the temperature and species density evolution also shows that the fuel-lean and fuel-rich inhomogeneity have different effects on the combustion features in the initiation region behind the oblique shock wave. Two characteristic quantities, namely the initiation length and the ODW surface position, are defined to describe quantitatively the effects of mixture equivalence ratio inhomogeneity. The results show that the initiation length is mainly determined by the mixture equivalence ratio in the initiation region. Additional computations are performed by reversing ER distribution, i.e., with the linear variation above the initiation region of uniform stoichiometric condition and results also demonstrate that the ODW position is effectively determined by the ER variation before the ODW, which has in turn only negligible effect on the initiation length.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical, Industrial and Aerospace Engineering
Item Type:Article
Refereed:Yes
Authors:Fang, Yishen and Hu, Zongmin and Teng, Honghui and Jiang, Zonglin and Ng, Hoi Dick
Journal or Publication:Aerospace Science and Technology
Date:21 September 2017
Funders:
  • The National Natural Science Foundation of China NSFC Nos. 91641130 and 11372333
Digital Object Identifier (DOI):10.1016/j.ast.2017.09.027
Keywords:Oblique detonation; Equivalence ratio; Mixture inhomogeneity; Detailed chemistry
ID Code:983090
Deposited By: DANIELLE DENNIE
Deposited On:28 Sep 2017 18:20
Last Modified:01 Sep 2018 00:01

References:

[1] K. Kailasanath, Recent developments in the research on pulse detonation engines, AIAA Journal 41 (2003) 145-159.
[2] A.J. Higgins, Ram accelerators: outstanding issues and new directions, Journal of propulsion and power 22 (2006) 1170-1187.
[3] P. Wokanski, Detonative propulsion, Proceedings of the Combustion Institute 34(1) (2013) 125-158.
[4] E.M. Braun, F.K. Lu, D.R. Wilson, J.A. Camberos, Airbreathing rotating detonation wave engine cycle analysis, Aerospace Science and Technology 27 (2013) 201-208.
[5] E.P. Gross, Hydrodynamics of a superfluid condensate, Journal of Mathematical Physics 4(2) (1963) 195-207.
[6] D.T. Pratt, J.W. Humphrey, D.E. Glenn, Morphology of standing oblique detonation waves, Journal of Propulsion and Power 7(5) (1991) 837-845.
[7] S.A. Ashford, G. Emanuel, Wave angle for oblique detonation waves, Shock Waves 3(4) (1994) 327-329.
[8] G. Emanuel, D.G. Tuckness, Steady, oblique, detonation waves, Shock Waves 13(6) (2004) 445-451.
[9] C. Li, K. Kailasanath, E.S. Oran, Detonation structures behind oblique shocks, Physics of Fluids 6(4) (1994) 1600-1611.
[10] L.F. Figueira Da Silva, B. Deshaies, Stabilization of an oblique detonation wave by a wedge: a parametric numerical study, Combustion and Flame 121(1) (2000) 152-166.
[11] M.V. Papalexandris, A numerical study of wedge-induced detonations, Combustion and Flame 120(4) (2000) 526-538.
[12] H.H. Teng, Z.L. Jiang, On the transition pattern of the oblique detonation structure, Journal of Fluid Mechanics 713 (2012) 659-669.
[13] J.Y. Choi, E.J.R. Shin, I.S. Jeung, Unstable combustion induced by oblique shock waves at the non-attaching condition of the oblique detonation wave, Proceedings of the Combustion Institute 32(2) (2009) 2387-2396.
[14] H.H. Teng, Z.L. Jiang, H.D. Ng, Numerical study on unstable surfaces of oblique detonations, Journal of Fluid Mechanics 744 (2014) 111-128.
[15] Y. Liu, D. Wu, S. Yao, J. Wang, Analytical and numerical investigations of wedge-induced oblique detonation waves at low inflow Mach number, Combustion Science and Technology 187(6) (2015) 843-856.
[16] Y. Liu, X. Han, S. Yao, J. Wang, A numerical investigation of the prompt oblique detonation wave sustained by a finite-length wedge, Shock waves 26(6) (2016) 729-739.
[17] S. Bhattrai, H. Tang, Formation of near-Chapman–Jouguet oblique detonation wave over a dual-angle ramp, Aerosp. Sci. Technol 63 (2017) 1-8.
[18] M.J. Grismer, J.M. Powers, Numerical predictions of oblique detonation stability boundaries, Shock Waves 6(3) (1996) 147-156.
[19] M.Y. Gui, B.C. Fan, G. Dong, Periodic oscillation and fine structure of wedge-induced oblique detonation waves, Acta Mechanica Sinica 27(6) (2011) 922-928.
[20] J.Y. Choi, D.W. Kim, I.S. Jeung, F. Ma, V. Yang, Cell-like structure of unstable oblique detonation wave from high-resolution numerical simulation, Proceedings of the Combustion Institute 31(2) (2007) 2473-2480.
[21] J. Verreault, A.J. Higgins, R.A. Stowe, Formation of transverse waves in oblique detonations, Proceedings of the Combustion Institute 34(2) (2013) 1913-1920.
[22] H. Teng, H.D. Ng, K. Li, C Luo, Z Jiang, Evolution of cellular structures on oblique detonation surfaces, Combustion and Flame 162(2) (2015) 470-477.
[23] D.R. Wilson, F.K. Lu, H. Kim, R. Munipalli, Analysis of a pulsed normal detonation wave engine concept, AIAA paper 2001-1784, 2001.
[24] R. Munipalli, V. Shankar, D.R. Wilson, H. Kim, F.K. Lu, P.E. Hagseth, A pulse detonation based multimode engine concept, AIAA paper 2001-1786, 2001.
[25] F.K. Lu, H.Y. Fan, D.R. Wilson, Detonation waves induced by a confined wedge, Aerosp. Sci. Technol 10 (2006) 679-685.
[26] H.Y. Fan, F.K. Lu, Numerical modelling of oblique shock and detonation waves induced in a wedged channel, Proc. IMechE Part G: J. Aerospace Engineering 222 (2008) 687-703.
[27] J.L. Cambier, H. Adelman,G.P. Menees, Numerical simulations of an oblique detonation wave engine, Journal of Propulsion and Power 6(3) (1990) 315-323.
[28] V.V. Vlasenko, V.A. Sabel'nikov, Numerical simulation of inviscid flows with hydrogen combustion behind shock waves and in detonation waves, Combustion, Explosion, and Shock Waves 31(3) (1995) 376-389.
[29] G. Fusina, J.P. Sislian, B. Parent, Formation and stability of near Chapman-Jouguet oblique detonation waves, AIAA Journal 43(7) (2005) 1591-1604.
[30] B. Zhang, H.D. Ng, J.H.S. Lee, The critical tube diameter and critical energy for direct initiation of detonation in C2H2/N2O/Ar mixtures, Combustion and Flame 159(9) 2012 2944-2953.
[31] B. Zhang, N. Mehrjoo, H.D. Ng, et al., On the dynamic detonation parameters in acetylene-oxygen mixtures with varying amount of argon dilution, Combustion and Flame 161(5) 2014 1390-1397.
[32] B. Zhang, C.H. Bai, Methods to predict the critical energy of direct detonation initiation in gaseous hydrocarbon fuels -An overview, Fuel 117 (2014) 294-308.
[33] B. Zhang, The influence of wall roughness on detonation limits in hydrogen–oxygen mixture, Combustion and Flame 169 (2016) 333-339.
[34] J.P. Sislian, R. Dudebout, J. Schumacher, M. Islam, and T. Redford, Incomplete Mixing and Off-Design Effects of Shock-Induced Combustion Ramjet Performance, Journal of Propulsion and Power 16 (2000) 41-48.
[35] Y. Zhang, J. Gong, T. Wang, Numerical study on initiation of oblique detonations in hydrogen–air mixtures with various equivalence ratios, Aerospace Science and Technology 49 (2016) 130-134.
[36] J.H.S. Lee, The Detonation Phenomenon. New York: Cambridge University Press, 2008.
[37] K. Iwata, S. Nakaya, M. Tsue, Numerical investigation of the effects of nonuniform premixing on shock-induced combustion, AIAA Journal 54(5) (2016) 1682-1692.
[38] K. Iwata, S. Nakaya, M. Tsue, Wedge-stabilized oblique detonation in an inhomogeneous hydrogen-air mixture, Proceedings of the Combustion Institute 36(2) (2017) 2761-2769.
[39] T. Wang, Y. Zhang, H. Teng, Z. Jiang, H. Ng, Numerical study of oblique detona-tion wave initiation in a stoichiometric hydrogen–air mixture, Physics of Fluids 27 (2015) 096101.
[40] C. Li, K. Kailasanath, E.S. Oran, Effects of boundary layers on oblique detonation structures, AIAA paper 93-0450, l993.
[41] B.J. McBride, M.J. Zehe, S. Gordon, NASA Glenn Coefficients for Calculating Thermodynamic Properties of Individual Species, Report No. 2002-211556, NASA/TP, 2002.
[42] M. Sun, K. Takayama, Conservative smoothing on an adaptive quadrilateral grid, Journal of Computational Physics 150 (1999) 143-180.
[43] E.F. Toro, Riemann solvers and numerical methods for fluid dynamics (Second ed). Berlin: Springer, 1999.
[44] R. J. Kee, F.M. Rupley, E. Meeks, J.A. Miller, Chemkin-II: a fortran chemical kinetics package for the analysis of gas-phase chemical and plasma kinetics. UC-405, SAND96-8216, Sandia National Laboratories. 1989.
[45] P.N. Brown, G.D. Byrne, A.C. Hindmarsh, VODE, A Variable-Coefficient ODE Solver, SIAM J. Sci. Stat. Comput. 10 (1989) 1038-1051.
[46] R. Dudebout, J.P. Sislian, R. Oppitz, Numerical simulation of hypersonic shock-induced combustion ramjets, Journal of Propulsion and Power 14 (1998) 869–879.
[47] D.C. Alexander, J.P. Sislian, B. Parent, Hypervelocity fuel/air mixing in mixed-compression inlets of shcramjets, AIAA Journal 44 (2006) 2145–2155.
[48] H. Teng, Y. Zhang, Z. Jiang, Numerical investigation on the induction zone structure of the oblique detonation waves, Computer and Fluids 95 (2014) 127–131.
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Downloads per month over past year

Research related to the current document (at the CORE website)
- Research related to the current document (at the CORE website)
Back to top Back to top