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Mes activités de recherche se positionnent dans le domaine de la mécanique des fluides numérique. Plus particulièrement, mes travaux ont porté sur:
- les schémas de discrétisation des équations de la mécanique des fluides compressibles en maillage non structuré fixes et mobiles
- la turbulence (approches déterministes et statistiques, aspects modélisation et simulation)
- le couplage fluide/structure
- l'optimisation de forme
- le calcul intensif sur supercalculateurs parallèles
- les solveurs linéaires (pour la résolution efficace séquentielle et parallèle de systèmes linéaires).
Articles dans des journaux internationaux
1. B. Koobus, S. Camarri, M.V. Salvetti, S. Wornom and A. Dervieux, Parallel
Simulation of Three-Dimensional Complex Flows: Application to turbulent
wakes and two-phase compressible flows, Advances in Engineering Software,
Vol. 38, pp 328-337, 2007.
2. C. Farhat, A. Rajasekharan and B. Koobus, A Dynamic Variational Multi-
scale Method for Large Eddy Simulations on Unstructured Meshes, Computer
Methods in Applied Mechanics and Engineering, Vol. 195, pp 1667-1691,
2006.
3. P.-H. Cournède, B. Koobus and A. Dervieux, Positivity statements for a
Mixed-Element-Volume scheme on fixed and moving grids, La Revue Europeenne de Mécanique Numérique, Vol. 15, no 7-8, pp. 767-798, 2006.
4. M. Vazquez, A. Dervieux, B. Koobus A methodology for the shape optimiza-
tion of flexible wings, Engineering Computations, Volume 23 Issue 4, 2006.
5. S. Camarri, M.V. Salvetti, B. Koobus and A. Dervieux, Bluff-body flow
simulation by an hybrid RANS/LES approach, Wind & Structures, Vol. 8,
No 6, pp. 407-426, November 2005.
6. B. Koobus and C. Farhat, A Variational Multiscale Method for the Large
Eddy Simulation of Compressible Turbulent Flows on Unstructured Meshes
- Application to Vortex Shedding, Computer Methods in Applied Mechanics
and Engineering, Vol. 193, pp. 1367-1383, 2004.
7. S. Camarri, B. Koobus, M.V. Salvetti, A. Dervieux, A low-diffusion MUSCL
scheme for LES on unstructured grids, Computers & Fluids, 33:1101-1129,
2004 (top 10 most downloaded article for this journal, year 2005).
8. M. Vazquez, A. Dervieux and B. Koobus, Multilevel optimization of a super-
sonic aircraft, Finite Elements in Analysis and Design, Vol. 40, pp. 2101-
2124, 2004 (top 10 most downloaded article for this journal, year 2005).
9. E. Schall, D. Leservoisier, A. Dervieux and B. Koobus, Mesh adaptation
as a tool for certified computational aerodynamics, International Journal for
Numerical Methods in Fluids, Vol. 45, pp. 179-196, 2004.
10. E. Schall, C. Viozat, B. Koobus and A. Dervieux, Computation of Low Mach
Thermical Flows with Implicit Upwind Methods, International Journal of
Heat and Mass Transfer, 46:3909-3926, 2003.
11. F. Courty, A. Dervieux, B. Koobus and L. Hascoet, Reverse Automatic Dif-
ferentiation for Optimum Design: from Adjoint State assembly to Gradient
Computation, Optimisation Methods and Software, Vol. 18, No 5, pp. 615-
627, 2003.
12. S. Camarri, M.V. Salvetti, B. Koobus, A. Dervieux, Large-eddy simulation of
a bluff-body flow on unstructured grids, International Journal for Numerical
Methods in Fluids, 40:1431-1460, 2002.
13. M. Sarkis and B. Koobus, A scaled and minimum overlap restricted additive
Schwarz method with application to aerodynamics, Computer Methods in
Applied Mechanics and Engineering, Vol. 184, pp. 391-400, 2000.
14. B. Koobus, H. Tran, and C. Farhat, Computation of Unsteady Viscous Flows
Around Moving Bodies Using the k epsilon Turbulence Model on Unstructured
Dynamic Grids, Computer Methods in Applied Mechanics and Engineering,
Vol. 190, pp. 1441-1466, 2000.
15. R. Lardat, R. Carpentier, B. Koobus, E. Schall, A. Dervieux, C. Farhat,
J.-F. Guery, P. Della Pieta, Interaction between a Pulsating Flow and a
Perforated Membrane, La Revue Europeenne des Eléments Finis, Vol. 9, No
6-7, pp. 805-817, 2000.
16. R. Lardat, B. Koobus, E. Schall, A. Dervieux, C. Farhat, Analysis of a
Possible Coupling in a Thrust Inverter, La Revue Européenne des Eléments
Finis, Vol. 9, No 6-7, pp. 819-834, 2000.
17. E. Shall, R. Lardat, A. Dervieux, B. Koobus, C. Farhat, Aeroelastic coupling
between a Thin Divergent and High Pressure Jets, La Revue Européenne des
Eléments Finis, Vol. 9, No 6-7, pp. 835-851, 2000.
18. B. Koobus and C. Farhat, Second-Order Time-Accurate and Geometrically
Conservative Implicit Schemes for Flow Computations on Unstructured Dy-
namic Meshes, Computer Methods in Applied Mechanics and Engineering,
Vol. 170, pp. 103-130, 1999.
19. B. Koobus and C. Farhat, On the implicit time integration of semi-discrete
viscous fluxes on unstructured dynamic meshes, International Journal for
Numerical Methods in Fluids, Vol.29, 975-996, Issue 8, 1999.
20. H. Tran, B. Koobus, and C. Farhat, Numerical Simulation of Vortex Shed-
ding Flows Past Moving Obstacles Using the k- Turbulence Model on Un-
structured Dynamic Meshes, La Revue Européenne des Eléments Finis, Vol.
6, No. 5/6, pp. 611-642, 1998.
21. C. Farhat, C. Degand, B. Koobus and M. Lesoinne, Torsional Springs for
Two-Dimensional Dynamic Unstructured Fluid Meshes, Computer Methods
in Applied Mechanics and Engineering, Vol. 163, pp. 231-245, 1998.
22. N. Marco, B. Koobus and A. Dervieux, An Additive Multilevel Optimiza-
tion Method and its application to unstructured meshes, Journal of Scientific
Computing, Vol.12, No 3, 1997.
23. B. Koobus, M.-H. Lallemand, A. Dervieux, Unstructured Volume-Agglomeration
MG : solution of the Poisson equation, International Journal for Numerical
Methods in Fluids, Vol.18, 27-42, 1994.
Articles soumis :
So1 M.V. Salvetti, H. Ouvrard, B. Koobus, S. Camarri and A. Dervieux, A
hybrid model based on fluctuation corrections, submitted to Flow Turbulence
and Combustion.
So2 A. Dervieux, C. Farhat, B. Koobus, M. Vazquez, Total energy conservation
in ALE schemes for compressible flows, submitted to Revue Européenne de
Mécanique Numerique.
Chapitres de livre:
24. E. Teupootahiti, A. Dervieux, B. Koobus et al., Coupling of structure and
fluids, Progress in Computational Flow-Structure Interaction, Notes on Nu-
merical Fluid Mechanics and Multidisciplinary Design, Springer series, Vol.
81, pp. 177-190, 2003.
25. C. Farhat, B. Koobus and H. Tran, Simulation of Vortex Shedding Domi-
nated Flows Past Rigid and Flexible Structures, Computational Methods for
Fluid-Structure Interaction, ed. T. Kvamsdal, I. Enevoldsen, K. Herfjord,
C. B. Jenssen, K. Mehr and S. Norsett, Tapir, pp. 1-30, 1999.
Conférences avec comité de lecture:
26. H. Ouvrard, B. Koobus, A. Dervieux, S. Camarri and M.V. Salvetti, The
role of different errors in classical LES and in variational multiscale LES on
unstructured grids, ERCOFTAC Workshop, Direct and Large-Eddy Simula-
tion 7, Trieste, September 8-10 2008, Italy.
27. M.V. Salvetti, S. Camarri, A. Dervieux, B. Koobus, H. Ouvrard, S. Wornom,
A numerical method for large-eddy simulation on unstructured grids, Pro-
ceedings of Contactforum KVAB (Flamish Science Academy) Modern Tech-
niques for Solving Partial Differential Equations, 19 June 2008, Bruxelles
28. H. Ouvrard, S. Camarri, B. Koobus, A. Dervieux and M.V. Salvetti, Numer-
ical viscosity, SGS modeling and grid refinement in LES and in variational
multiscale LES, World Congress on Computational Mechanics (WCCM8),
5th European Computational Methods in Applied Sciences and Engineering
(ECCOMAS 2008), June 30 - July 5, 2008, Venice, Italy.
29. H. Ouvrard, B. Koobus, M.V. Salvetti, S. Camarri and A. Dervieux, Varia-
tional multiscale LES and hybrid RANS/LES simulation of complex unsteady
flow, VECPAR08, 8th International Meeting High Performance Computing
for Computational Science, 24-27 june, Toulouse, 2008.
30. H. Ouvrard, S. Wornom, B. Koobus, S. Camarri, M.V. Salvetti and A.
Dervieux, Computation of complex unsteady flows around bluff-bodies through
VMS-LES modeling, WEHSFF 2007, Moscow, Nov. 19-22 2007.
31. M.V. Salvetti, S. Camarri, B. Koobus, and A. Dervieux, LES and hybrid
RANS/LES simulation of complex flows on unstructured grids, WEHSFF
2007, Moscow, Nov. 19-22 2007.
32. M.V. Salvetti, B. Koobus, S. Camarri and A. Dervieux, Simulation of bluff-
body flows through a hybrid RANS/VMS-LES model, IUTAM Symposium
Unsteady Separated Flows and their Control, 18-22th June 2007, Corfu,
Greece.
33. M.V. Salvetti, S. Camarri, B. Koobus and A. Dervieux, A locally supercon-
vergent scheme for the simulation of turbulent flows in complex geometries,
ICCFD4, The Fourth International Conference on Computational Fluid Dy-
namics, Ghent, Belgium, July 10-14, 2006.
34. S. Sirnivas, S. Wornom, A. Dervieux, B. Koobus, O. Allain, A study of LES
models for the simulation of a turbulent flow around a truss spar geometry,
Proceedings of OMAE06, 25rd International Conference on Offshore and
Arctic Engineering, 4-9 June, 2006, Hamburg, Germany.
35. C. Farhat, A. Rajasekharan and B. Koobus, A Dynamic Variational Multi-
scale Method for Large Eddy Simulations on Unstructured Meshes, FEF05,
Thirteenth Conference on Finite Elements for Flow Problems, April 2005,
Swansea, Wales, UK.
36. A. Dervieux, F. Courty, T. Roy, M. Vazquez, B. Koobus, Optimization loops
for shape and error control, PROMUVAL Short Course on Multidisciplinary
Modelling, Simulation and Validation in Aeronautics, Barcelona, june 28-
29, 2004, in Verification and validation methods for challenging multiphysics
problems, edited by B. Bugeda, J.C. Courty, A. Guillot, R. Hold, M. Marini,
T. Nguyen, K. Papailiou, J. Periaux and D. Schwamborn, 231-247, CIMNE,
Barcelona, 2006.
37. K. El Omari, E. Schall, B. Koobus, A. Dervieux, M. Amara, J.P. Dumas,
Fluid-structure coupling of a turbulent flow and a generic blimp structure at
hight angle of attack, 9th Conference of Applied Mathematics and Statistics,
Jaca, Spain, september 19-21, 2005.
38. Bentaleb Y., Schall E., Koobus B., Dervieux A., Amara M., A Numerical
Method for Simulating turbulent shear flows with low-Reynolds k-eps models,
9th Conference of Applied Mathematics and Statistics, Jaca, Spain, septem-
ber 19-21, 2005.
39. B. Koobus, L. Hascoet, F. Alauzet, A. Loseille, Y. Mesri, A. Dervieux,
Continuous mesh adaptation models for CFD, SAROD-2005, Hyderabad,
december 8-9, 2005, in Recent Trends in Aerospace Design and Optimiza-
tion, B. Uthup, S.P. Koruthu, R.K. Sharma, P. Priyadarshi Eds. pages
3-11, Tata-McGraw Hill, New Delhi, 2005.
40. A. Dervieux, M. Vazquez, L. Hascoet, B. Koobus, Optimization loops for
shape and error control, Post-SAROD Indo-French Workshop, Bangalore,
december 12-13 in Recent Trends in Aerospace Design and Optimization,
B. Uthup, S.P. Koruthu, R.K. Sharma, P. Priyadarshi Eds. pages 363-373,
Tata-McGraw Hill, New Delhi, 2005.
41. F. Courty, T. Roy, M. Vazquez, B. Koobus, and A. Dervieux, Continuous er-
ror analysis for P1-exact schemes, FEF05, Thirteenth Conference on Finite
Elements for Flow Problems, April 2005, Swansea, Wales, UK.
42. S. Camarri, B. Koobus, M.V. Salvetti, A. Dervieux, A hybrid RANS/LES
approach applied to bluff-body flow simulation, European Congress on Com-
putational Methods in Applied Sciences and Engineering, July 2004, Jy-
vaskyla (Finland).
43. M. Vazquez, B. Koobus, A. Dervieux and F. Courty, Sonic Boom Reduction
of Supersonic Aircrafts by Aeroelastic Optimization, European Congress on
Computational Methods in Applied Sciences and Engineering, July 2004,
Jyvaskyla (Finland).
44. A. Dervieux, H. Guillard, S. Wornom, A. Murrone, B. Koobus, Some recent
developments of the mixed element volume scheme, in 16ème Seminaire CEA-
GAMNI de Mecanique des Fluides Numerique, Paris, 26-27 janvier 2004.
45. Y. Bentaleb, E. Schall, B. Koobus, M. Amara, Low Mach investigation of
compressible airflow around a generic Airship, eighth Zaragoza-Pau confer-
ence of applied mathematics and statistics. 15-17 sept. 2003, Jaca (E),
in Monografias del Seminario Matematico Garcdela Galdeano, Lopez de
Silanes et al. Eds., pp 509-518, 2004.
46. K. El Omari, E. Schall, B. Koobus, A. Dervieux, Turbulence modeling chal-
lenge in airship CFD studies, eighth Zaragoza-Pau conference of applied
mathematics and statistics. 15-17 sept. 2003, Jaca (E), in Monografias del
Seminario Matematico Garc a del Galdeano, Lopez de Silanes et al. Eds.,
pp 545-554, 2004.
47. K. El Omari, E. Schall, B. Koobus, A. Dervieux, Inviscid flow calculation
around a flexible airship, eighth Zaragoza-Pau conference of applied mathe-
matics and statistics. 15-17 sept. 2003, Jaca (E), in Monografias del Sem-
inario Matematico Garca del Galdeano, Lopez de Silanes et al. Eds., pp
535-544, 2004.
48. A. Dervieux, B. Koobus, E. Schall, R. Lardat and C. Farhat, Application
of unsteady fluid-structure methods to problems in aeronautics and space, in
Noel G. Barton and Jacques Periaux (Eds) Coupling of Fluids, Structures
and Waves in Aeronautics Proceedings of a French-Australian Workshop in
Melbourne, Australia 3-6 December 2001. pages 57-70, Notes in Num. Fluid
Mechanics and Multidisciplinary Design (NNFM), Vol. 85, 2003, Springer.
49. A. Dervieux, F. Courty, M. Vazquez and B. Koobus, Additive multilevel op-
timization and its application to sonic boom reduction, in Numerical Meth-
ods for Scientific Computing - Variational Problems and Applications, E.
Heikkola, Y. Kuznetsov, P. Neittaanmaki and O. Pironneau Eds., 31-44,
(conference JP60, Jyvaskyla, June 12-15, 2002), CIMNE, Barcelona, 2003.
50. I. Abalakin, M. Braza, S. Camarri, A. Dervieux, B. Koobus, T. Kozubskaya,
P. Rodes, M.V. Salvetti, Unstable and unsteady aerodynamics : compared
information from different numerical models, in Fluid Dynamics and Aero-
nautics: new challenges, J. Périaux, M. Champion, J.-J. Gagnepain. O.
Pironneau, B. Stoufflet, P. Thomas Eds., CIMNE, Barcelona, 253-277, 2003
(Proceeding of NFD 2000, Paris).
51. C. Farhat and B. Koobus, Finite Volume Discretization on Unstructured
Meshes of the Multiscale Formulation of Large Eddy Simulations, Proceed-
ings of the Fifth World Congress on Computational Mechanics (WCCM V),
H. A. Mang, F. G. Rammerstorfer, J. Eberhardsteiner, eds., Vienna Univer-
sity of Technology, Austria, July 7-12, 2002.
52. A. Dervieux, B. Koobus, C. Farhat, M. Vazquez, R. Carpentier and E. Schall,
Numerical models for computing unsteady fast flows and their interaction
with structures, West East High Speed Flow Fields Conference, Marseille,
April 2002, 110-119, published by CIMNE, Barcelona.
53. E. Schall, C. Viozat, B. Koobus, A. Dervieux, On the computation of un-
steady and steady low Mach flows with upwind methods, European Congress
on Computational Methods in Applied Sciences and Engineering, Swansea,
4-7 September 2001.
54. S. Camarri, B. Koobus, M.V. Salvetti and A. Dervieux, Numerical diffusion
based on high-order derivatives in MUSCL schemes for LES on unstructured
grids, in the proceedings of DLES-4, Direct and Large-Eddy Simulation-IV,
July 18-20 2001, Twente (Holland).
55. S. Camarri, B. Koobus, M.V. Salvetti and A. Dervieux, Towards the large-
eddy simulation of complex engineering flows, in the proceedings of EC-
COMAS 2000, European Congress on Computational Methods in Applied
Sciences and Engineering, 11-14 September 2000, Barcelona (Spain).
56. A. Dervieux, N. Marco, C. Held, B. Koobus, Hierarchical principles and
preconditioning for optimum design and identification, Eurodays, Paris 6,
France, 20-21 mars 2000, in Innovative tools for scientific computation in
AERONAUTICAL engineering, 272-280, published by CIMNE, Barcelona, 2001
57. B. Koobus, E. Schall and C. Farhat, Investigation of the aeroelastic coupling
between a nozzle and a supersonic jet, Computational acoustics and FSI
mini-symposium at USNCCM99, Boulder, CO, August 1999..
58. H. Tran, B. Koobus and C. Farhat, Numerical Solution of Vortex Dominated
Flow Problems with Moving Grids, AIAA Paper 98-0766, 36th Aerospace
Sciences Meeting and Exhibit, Reno, NV, January 12-15, 1998..
59. B. Koobus and C. Farhat, Second-Order Implicit Schemes that Satisfy the
GCL for Flow Computations on Dynamic Grids, AIAA Paper 98-0113, 36th
Aerospace Sciences Meeting and Exhibit, Reno, NV, January 12-15, 1998..
60. C. Farhat, C. Degand, B. Koobus and M. Lesoinne, An Improved Method of
Spring Analogy for Dynamic Unstructured Fluid Meshes, AIAA Paper 98-
2070, 39th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynam-
ics, and Materials Conference, Long Beach, California, April 20-23, 1998..
61. C. Degand, C. Farhat, B. Koobus and M. Lesoinne, Torsional Springs for
Two-Dimensional Dynamic Unstructured Fluid Meshes, Fourth U.S. Na-
tional Congress on Computational Mechanics, San Francisco, California,
August 6-8, 1997..
62. B. Koobus and C. Farhat, Time-accurate Algorithms for the Evaluation of
the Viscous Fluxes Associated with Unsteady Flows and Unstructured Moving
Meshes, AIAA Paper 96-2384, 14th AIAA Applied Aerodynamics Confer-
ence, New Orleans, Louisiana, June 18-20, 1996..
63. C. Farhat, B. Koobus and M. Lesoinne, A High Fidelity and High Perfor-
mance Computational Methodology for the Solution of Viscous Aeroelastic
Response Problems, Proceedings of the First AFOSR Conference on Dy-
namic Motion CFD, Rutgers, June 3-5, pp. 159-187, 1996..
64. B. Koobus, M.-H. Lallemand, G. Carre and A. Dervieux, Unstructured
Multigrid by Volume Agglomeration for diffusion problems, Proceedings of
Contributions to multigrid, Fourth European Multigrid Conference, Hemker
P.W., Wesseling P. (eds), CWI, Amsterdam, 1993..
65. M.-C. Pelissier and B. Koobus, A 3D ocean-acoustic parabolic propagation
model in a variable environment, Acoustics93, joint IOA/SFA Spring Con-
ference, University of Southampton, 21-23 April 1993.
66. B. Koobus, H. Bouxin, B. Grandvuillemin and M. Ferrieres, Parques 3-D : a
three dimensional propagation loss model using the parabolic equation, Proceedings of the Undersea Defense Technology, Paris, April 1991, Microwave
exhibitions & publishers LTD.
Publications en Bulletin Européen + Workshop
67. B. Koobus and A. Dervieux, Parallel Solutions of Three-Dimensional Flows,
ERCOFTAC Bulletin, 50:21-24, Theme: Parallel Computing in CFD, 2001.
68. B. Koobus, Flutter analysis of an AGARD 445.6 Wing, First FLOWnet
workshop, Multi-Physics sessions, Roma, 15-16 March 2000.
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