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2. Andrej Horvat Intelligent Fluid Solution Ltd. 127 Crookston Road, London, SE9 1YF, United Kingdom Tel./Fax: 44 (0)1235 819 729 Mobile: 44 (0)78 33 55 63 73 E-mail: andrej.horvat@intelligentfluidsolutions.co.uk Web: www.intelligentfluidsolutions.co.uk . Contact information .
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2. 2 Andrej Horvat
Intelligent Fluid Solution Ltd.
127 Crookston Road, London, SE9 1YF, United Kingdom
Tel./Fax: +44 (0)1235 819 729
Mobile: +44 (0)78 33 55 63 73
E-mail: andrej.horvat@intelligentfluidsolutions.co.uk
Web: www.intelligentfluidsolutions.co.uk
3. 3 1995, Dipl. -Ing. Mech. Eng. (Process Tech.)
University of Maribor
1998, M.Sc. Nuclear Eng.
University of Ljubljana
2001, Ph.D. Nuclear Eng.
University of Ljubljana
2002, M.Sc. Mech. Eng. (Fluid Mechanics & Heat Transfer)
University of California, Los Angeles
4. 4 More than 10 years of intensive CFD related experience:
R&D of numerical methods and their implementation
(convection schemes, LES methods, semi-analytical methods, Reynolds Stress models)
Design analysis
(large heat exchangers, small heat sinks, burners, drilling equip., flash furnaces, submersibles)
Fire prediction and suppression
(backdraft, flashover, marine environment, gas releases, determination of evacuation criteria)
Safety calculations for nuclear and oil industry
(water hammer, PSA methods, severe accidents scenarios, pollution dispersion)
5. 5 As well as CFD, experiences also in:
Experimental methods
QA procedures
Standardisation and technical regulations
Commercialisation of technical expertise and software products
6. 6 Overview of fluid dynamics transport equations
- transport of mass, momentum, energy and composition
- influence of convection, diffusion, volumetric (buoyancy) force
- transport equation for thermal radiation
Averaging and simplification of transport equations
- spatial averaging
- time averaging
- influence of averaging on zone and field models
Zone models
- basics of zone models (1 and 2 zone models)
- advantages and disadvantages
7. 7 Field models
- numerical mesh and discretisation of transport equations
- turbulence models (k-epsilon, k-omega, Reynolds stress, LES)
- combustion models (mixture fraction, eddy dissipation, flamelet)
- thermal radiation models (discrete transfer, Monte Carlo)
- examples of use
Conclusions
- software packages
Examples
- diffusion flame
- fire in an enclosure
- fire in a tunnel
8. 8 Today, CFD methods are well established tools that help in design, prototyping, testing and analysis
The motivation for development of modelling methods (not only CFD) is to reduce cost and time of product development, and to improve efficiency and safety of existing products and installations
Verification and validation of modelling approaches by comparing computed results with experimental data are necessary
Nevertheless, in some cases CFD is the only viable research and design tool (e.g. hypersonic flows in rarefied atmosphere)
9. 9
10. 10 Transport equations
11. 11 Transport equations
12. 12 Transport equations
13. 13 Transport equations
14. 14 Transport equations
15. 15 Transport equations
16. 16 Transport equations
17. 17 Transport equations
18. 18 Transport equations
19. 19 Transport equations
20. 20 Transport equations
21. 21 Transport equations
22. 22 Transport equations
23. 23 Transport equations
24. 24 Transport equations
25. 25
26. 26 Averaging and simplification of transport equations
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39 Zone models
40. 40 Zone models
41. 41 Zone models
42. 42 Zone models
43. 43
44. 44 Field models
45. 45 Field models
46. 46 Field models
47. 47 Field models
48. 48 Field models
49. 49 Field models
50. 50 Field models
51. 51 Field models
52. 52 Field models
53. 53
54. 54 Turbulence models
55. 55 Turbulence models
56. 56 Turbulence models
57. 57 Turbulence models
58. 58 Turbulence models
59. 59 Turbulence models
60. 60 Turbulence models
61. 61 Turbulence models
62. 62 Turbulence models
63. 63 Turbulence models
64. 64 Turbulence models
65. 65 Turbulence models
66. 66 Turbulence models
67. 67 Turbulence models
68. 68 Turbulence models
69. 69
70. 70 Combustion models
71. 71 Combustion models
72. 72 Combustion models
73. 73 Combustion models
74. 74 Combustion models
75. 75 Combustion models
76. 76 Combustion models
77. 77 Combustion models
78. 78 Combustion models
79. 79 Combustion models
80. 80 Combustion models
81. 81 Combustion models
82. 82 Combustion models
83. 83 Combustion models
84. 84 Combustion models
85. 85 Combustion models
86. 86 Combustion models
87. 87 Combustion models
88. 88 Combustion models
89. 89 Combustion models
90. 90 Combustion models
91. 91
92. 92 Thermal radiation
93. 93 Thermal radiation
94. 94 Thermal radiation
95. 95 Thermal radiation
96. 96 Thermal radiation
97. 97 Thermal radiation
98. 98 Thermal radiation
99. 99
100. 100 Conclusions
101. 101 Conclusions
102. 102