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Modelling of turbulent swirling flows

By Lee Nicholas Jones

Abstract

This thesis investigates the predictability of non-reacting and reacting anistropic turbulent, swirling flows using popular turbulence models with a robust numrical procedure.\ud \ud The performance of these turbulence models is assessed and compared against experimental data for anisotropic, turbulent swirling flow in a cylindrical pipe and\ud non-reacting and reacting combustion chambers. The transport equations for title k -e and k - w two-equation turbulence models are presented along with the LRR and SSG second-moment closure models for isothermal and variable density flows. The effect of anisotropy in the Reynolds stress dissipation rate tensor is accounted for by the inclusion of an algebraic model for the dissipation anistropy tensor dependent 0n the mean strain and vorticity of the flow.\ud \ud The implementation of the SMART and CUBISTA boundedness preserving, high order accurate convective discretisation schemes is shown to yield superior predictive accuracy compared to previous methods such as Upwinding. The PISO and SIMPLE solution algorithms are employed to provide a robust calculation procedure.\ud \ud The second moment closure models are found to provide increased predictive accuracy compared to those of the two-equation models. Mean flow properties are predicted well, capturing the effects of the swirl in the experimental flow field. The LRR model shows a premature decay of swirl downstream compared to the more accurate predictions of the other models. The effect of dissipation anistropy on the\ud SSG model shows an over-prediction of the turbulent properties in the upstream region followed by premature decay downstream. In the near field of the non-reacting\ud combustion chamber flow, the anisotropic dissipation model corrects the SSG model over-prediction of the veloocities at the central axis.\ud \ud A combined CMC flamelet combustion model is employed alongside the anisotropic dissipation Reynolds stress model to predict the flow field and combustion related\ud properties of the TECFLAM swirl burner. The species mass \ud fractions are conditioned on the mixture fraction to provide an accurate model for the determination of the probability density functions governing the reactions within the turbulent flamelet.\ud \ud The turbulent model shows an ability to provide accurate predictinS for the aerodynamic properties of the flow whilst providing accurate determination of combustion\ud related phenomena alongside the combnstion model. A limitation of the flamelet assumption was identified with the over-prediction of CO due to the larger\ud lengthscales of the oxidation reactions present in such flows

Publisher: School of Mechanical Engineering (Leeds)
Year: 2004
OAI identifier: oai:etheses.whiterose.ac.uk:1192

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  1. {1991} Numerical comparison of momf'lltum interpolation methods and pressure- velocity algorithms using non-staggered grids.
  2. (1972). A calculation procedure for hpat.
  3. (1981). A calculation procedure for two-dimensional elliptic situations.
  4. (1995). A comparison of higer-order bounded convection schemes.
  5. (2003). A convergent and universally bounded scheme for the treatment of advection.
  6. (1985). A discussion of turbulent flame structure in premixed charges.
  7. (1995). A fourth order finite volume method with colo('att'd variable arrangement.
  8. (1994). A general non-orthogonal collocated finite volume algorithm for turbulent flow at all speeds incorporating secondmoment turbulence-transport closure, Part 1: Computational implementation.
  9. (1991). A low-diffusive and oscillation-free cOllvection :;chelll(,.
  10. (1970). A model for inhomogeneous turbulent flow.
  11. (2002). A new approach to modelling near-wall turbulence energy and stress dissipation. 459,
  12. (2003). A new second moment closure approach for turbulent swirling confined flows.
  13. (1991). A note on the scalar dissipation rates in turbulent flows.
  14. (1972). A novel finite differcnce formulation for differential ('xpress ions involving both first and second derivatives.
  15. (1992). A one equation turbulence model for aerodynamic flows.
  16. (1972). A Reynolds stress model of turbulence and its application to thin shear flows.
  17. (1979). A stable and accurate convective modelling procedure based on quadratic upstream interopolation.
  18. (1993). A theoretical and computational study of turbulent flames.
  19. (1997). Allstze zur modellierung eingeschlossener drallflammen. In: TECFLAM-Seminar Vol. 13, Drallflammen und Industriecodeentwicklung.
  20. an airfoil with trailing edge separation.
  21. (1990). An algebraic model for non isotropic turbulent dissipation rate in Reynolds-stress closures.
  22. (1999). An experimental and numerical study of turbulent swirling flow in gas cyclones Chem.
  23. (1984). An experimental investigation of gas jets in confined swirling air flow.
  24. (1996). An introduction to r:01llputational fluid dynamics: the finite volume method.
  25. (1997). Analysis and modelling of allisotropies in the dissipation rate of turbulence.
  26. (2000). Analysis and modelling of turbulent flow in an axially rotating pipe.
  27. (1995). Application of a nonlinear stress-strain model to axisymmetric turbulent swirling flows.
  28. (1998). Application of spontaneous Raman and Rayleigh scattering and 2D LIF for the characterization of a turbulent CH4/H-2/N-2 jet diffusion flame.
  29. (1974). Application of the energy dissipation model of turbulence to the calculation of flow near a spinning disc.
  30. (1996). AssesslllC'nt of tht' SS(; pressure-strain model in free turbulent jets with and without swirl.
  31. (1996). Burning velocities. ~Iarkstcin lengths, and flame quenching for spherical methane-air flam('s:a computational study.
  32. (1982). Calculation methods for reacting t urbulent. flows - a review.
  33. (1998). Calculation of laminar flows with second-order schemes and collocated variable arrangement.
  34. (1989). Chemkill-ii: A fortran chemical kinetics package for the analysis of gas phasc chemical kinct.ics. Sandia technical rcport.
  35. (1985). Combustion Fundamentals.
  36. (1998). Comparison of SIMPLE-and PISO-type algorithms for transient flows.
  37. (1989). Computat.ion of highly swirling confined flow with a reynolds-stress turbulence model.
  38. (2004). Computational methods for fluid dynamic.';.
  39. (1978). Computational modeling of turbulent flows.
  40. (2001). Computational study of joint effects of shear, compression and swirl on flow and turbulence in a valveless piston-cylinder assembly. SAE technical paper 2001-01-1236, Society of Automotive Engineers.
  41. (1999). Computations of strongly swirling flows with second moment closures.
  42. (1999). Computations ofn~cir("lllati()1l ",ones of a confined annular swirling flow.
  43. (1999). Conditional moment closure for turbulent combustion.
  44. (1998). Contribution towards the S('cOIlCi-mollH'ut closure modelling of separating turbulent flows.
  45. (1981). Countergradient diffusion in pr(,lllix('d t.urbulent flames.
  46. (1988). Curvature-compensated convective tramlport: SMART, a new boundedness preserving transport algorithm.
  47. (1973). Determination of burning velocity by double ignition in a closed vessel.
  48. (1997). Direct numerical simulation of turbulent flow over a backward-facing step.
  49. (2000). DNS, experimental and modelling study of axially compressed in-cylinder swirling flow.
  50. (1985). Dynamic behavior of premixed flame fronts in laminar and turbulent flows.
  51. (1994). Eddy viscosity transport models and their relation to the k - f model.
  52. (1998). Elementary fluid mechanics
  53. (2000). Enhancement of the momentum interpolation method on non-staggered grids.
  54. (1984). Enhancements of the simple method for predicting incompressible fluid flows.
  55. (2002). Establishmcnt of a confined swirling natural gcu;/air flame as a standard flamc: Tcmperature and spccies distribut.ions from lcu;er Raman measuremcnts.
  56. (2003). Evaluation of one- and two-equation low-Re turbulence models. Part i - axisYlllmetric s<,})(-U'at.ing and swirling flows.
  57. (1995). Evaluation of the performance of three turbulence closure models in the prediction of confined swirling flows.
  58. (1983). Experimental and theoretical investigation of backward facing step flow.
  59. (1970). Experiments on nearly homogeneous shear flow.
  60. (1981). Finite Difference Techniques For Vectorized Fluid Dynamic Calculation.r;.
  61. (2002). Finite' element analyses of flow in a cavity with internal blockages.
  62. (1990). Flame stretch and the balance equation for the flame area.
  63. (1994). Fundamental aspects and a review.
  64. (1991). Fundamental aspects of combustion in swirling flow.
  65. (1996). GRI-Mech 2.11: An optimized detailt'd chemical reaction mechanism for methane combustion and NO formation and rcburning. technical report, Gas Research Institute,
  66. (1978). Ground effects on pressure fluctuations in the atmospheric boundary layer.
  67. (1983). High resolution schemes for hyperbolic conservation laws .
  68. (1984). High resolution schemes using flux limiters for hyperbolic conservation laws.
  69. (1982). High-Re solutions for incompressible flow using the Navier- Stokes equations and a multigrid method.
  70. (1994). Incolllpressible flow calculations with a consistent physical interpolation tinite' volulIle approach.
  71. (2002). Introduction to direct numerical simulation.
  72. (2000). Investigations in the TECFLAM swirling diffusion flame: Laser raman mea..'mrements and cfd calculations.
  73. (2000). Investigations in the TECFLAM swirling diffusion flame: Laser Raman measurements and CFD calculations.
  74. (1994). Laminar flamelets ill turbulent Hames.
  75. (1998). Laser-diagnostic and numerical study of strongly swirling natural gas flames. In: Twenty.r;eventh Symposium (International) on Combustion The Combustion Institute.
  76. (1972). Lectures in mathematical models of turbulence.
  77. (2002). Linear and nonlinear eddy viscosity models.
  78. (2002). Mathematical modeling of turbulent non-premixed piloted-jet flames with local extinctions.
  79. (1997). Modeling of turbulent swirling flows. In:
  80. (1996). Modeling of turbulent transport equations.
  81. (2002). Modeling rot.ating and swirling turbulent flows: a perpetual challenge.
  82. (1987). Modelling strongly swirling recirculating jet with Reynolds stress transport closure.
  83. (1991). Modelling the pressurestrain correlation of turbulence: an invariant dynamical systems approach.
  84. (1979). Models for turbulent flows with variable density and combustion.
  85. (1989). momentum transfer in three- dimensional parabolic flows. Int .
  86. (1989). Near-wall k - f turbulence modeling.
  87. (1997). Numerical and experimental study of swirling flow in a model ('omhnstor.
  88. (1998). Numerical and experimental study of swirling flow in a model combustor.
  89. (1965). Numerical calculation oftime-depcndcnt viscous incompressible flow of fluid with free surface.
  90. (1980). Numerical Heat Transfer and Fluid Flow Hemisphere.
  91. (2003). Numerical investigation of a bluffbody stabilised nonpremixed flame with differential reynolds-stress models.
  92. (1993). Numerical recipes in C. 2nd edn,
  93. (1983). Numerical study of the turbulent flow past.
  94. (2000). On a highcr-order bounded discretisation scheme.
  95. (2003). On the anisotropy ofaxisymmetric strained turbulencc in the dissipation rangc .
  96. (2004). On the calculation of normals in freesurface flow problems.
  97. (1895). On the dynamical theory of incompressible viscous fluids and the determination of the criterion.
  98. (1945). On velocity correlations and the solutions of the equations of turbulent fluctuation.
  99. (1999). Predicting buoyant shear flows using anisotropic dissipation rate models. Flow Turb.
  100. (1982). Prediction of channel and boundary layer Hows with a lowReynolds-number turbulence model.
  101. (1998). Premixed turbulent flame instability and no formation in a lean-burn swirl burner.
  102. (2001). Principles and performance of TCL-ba. .. cd second-moment closures.
  103. (2002). Problems of predicting turbulent burning rate's.
  104. (2000). Progress in knowledge of flamelet. structure and ext.inction.
  105. (1975). Progress in the development of a Reynolds-stress turbulence closure.
  106. (1993). Radcal: A narrow-band model for radiation calculat.ions in a combustion environment.
  107. (2002). Reacting flows and probability density function methods.
  108. (2004). Recent developments in delta wing aerodynamics.
  109. (1988). Recent developments in turbulence modeling.
  110. (1988). Role of underrelaxation in momentum interpolation for calculation of flow with nonstaggered grids.
  111. Scalar profiles and no formation in laminar opposed-flow partially premixed methane/air flames.
  112. (1985). Solution of the implicitly discretized fluid flow equations by operator splitting.
  113. (1971). Statistical equations for turbulent fluctuations in compn'ssible flows - rates and temperatures.
  114. (1951). Statistiche theorie nicht-homogener turbulenz.
  115. (2000). Structure, aerodynamics, and geometry of premixed flamelets.
  116. (1984). Swirl flow .
  117. (1991). The conditional dissipation rate of an initially binary scalar in homogeneous turbulence.
  118. (1942). The equations of turbulent motion in an incompressible fluid.
  119. (1941). The local structure of turbulence in an incompressible fluid for very large Reynolds numbers.
  120. (1998). The mathematical Illockling of liftoff and blowoff of turbulent non-premixed methane jet flames at high strain rates. In: Twenty-seventh symposium (international)
  121. (1998). The modeling of aerodynamic strain rate and flame curvature effects in premix(~d turbulent combustion. In: Twenty-seventh symposium (international)
  122. (1972). The prediction of laminarization with a two-equation model of turbulence.
  123. (1978). Thin-layer approximation and algebraic model for separated turbulent flows.
  124. (1994). Thrbulence modeling for CFD. 2nd edn, DeW Industri('s.
  125. (1979). Towards the ultimate conservative difference scheme, v. A second -order sequel to Godunov's method.
  126. (1970). Transport equations of turbulence.
  127. (2002). Turbulence modeling.
  128. (1985). Turbulent combustion In:
  129. (1998). Turbulent rotating flow calculation:;: an assessment of two-equation anisotropic and Reynolds stress models.
  130. (2003). TVD schemes for unst.ructured grids.
  131. (1925). Uber die ausgebildete turbulenz.
  132. (1976). Upwind second-order difference schemes and applications in aerodynamic flows.
  133. (1977). Variable density effects in premixed turbulent flames.
  134. (1995). Why you should not use 'Hybrid', 'Power law' or related exponential schemes for convective modelling - there art' much better alternatives.

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