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Czech
Technical University in Prague (CVUT) Faculty of Nuclear Sciences and Physical Engineering (FJFI) Brehova 7, 115 19 - Praha 1, Czech Republic Department of Physical Electronics (KFE) Office: Room 131A, Trojanova 13, 120 00 - Praha 2, Czech Rep. Phone: +420 - 22435 8637 Fax: +420 - 22435 8625 e-mail: vachal (at) galileo . fjfi . cvut . cz |
- Research Interests:
- Rezoning of Lagrangian meshes for ALE computations
- Lagrangian schemes for multi-material cells
- FCT-based remapping strategies for ALE simulations
- Material interfaces and instabilities in plasma physics
- Optimization-based numerical approaches for fluid dynamics
- HLLE-type difference schemes for conservation laws in multiple dimensions
- Collaborators
- From our department (Prague)
- From Los Alamos
- From France (Toulouse
& Bordeaux)
- Other Collaborators
- Selected Publications:
- OPTIMIZATION-BASED SYNCHRONIZED FLUX-CORRECTED CONSERVATIVE
INTERPOLATION (REMAPPING) OF MASS AND MOMENTUM FOR
ARBITRARY LAGRANGIAN-EULERIAN METHODS
(Preprint here)
[with R. Liska, M. Shashkov and B. Wendroff]
Journal of Computational Physics Vol. 229, No. 5 (2010), p. 1467-1497. DOI: 10.1016/j.jcp.2009.10.039 (Los Alamos Technical Report LA-UR-09-04769)
- COMPARISON OF STAGGERED AND CELL-CENTERED
LAGRANGIAN AND ALE HYDRODYNAMICAL METHODS
[with R. Liska, R. Loubere, P.-H. Maire, J. Breil and S. Galera]
In: E. Tadmor and J.-G. Liu and A.E. Tzavaras (eds.): Hyperbolic Problems. Theory, Numerics and Applications. (Proceedings of HYP 2008).
p. 755-764. American Mathematical Society, 2009
- ARBITRARY LAGRANGIAN EULERIAN METHOD FOR LASER PLASMA SIMULATION
[with T. Kapin, M. Kucharik, J. Limpouch and R. Liska]
Intl. J. Num. Meth. Fluids. Vol. 56, No. 8 (2008), p. 1337-1342. DOI: 10.1002/fld.1567 (Los Alamos Technical Report LA-UR 07-3792)
- QUANTIFIER ELIMINATION SUPPORTED PROOFS IN THE NUMERICAL TREATMENT
OF FLUID FLOWS
[with R. Liska]
Applicable Algebra in Engineering, Communication and Computing. Vol. 18, No. 6 (2007), p. 575-582. DOI 10.1007/s00200-007-0057-6
- ARBITRARY LAGRANGIAN-EULERIAN (ALE) METHODS IN COMPRESSIBLE
FLUID DYNAMICS
[with M. Kucharik, R. Liska and M. Shashkov]
In: J. Chleboun and K. Segeth and T. Vejchodsky (eds.): Programs and Algorithms of Numerical Mathematics 13.
p. 178-183. Mathematical Institute, Academy of Sciences of the Czech Republic, 2006
- SEQUENTIAL FLUX-CORRECTED REMAPPING FOR ALE METHODS
[with R. Liska]
In: A. Bermudez de Castro, D. Gomez, P. Quintela and P. Salgado (eds.): Numerical Mathematics and Advanced Applications. ENUMATH 2005.
p. 671-679. Springer Verlag, 2006
- NUMERICAL METHODS FOR EULER EQUATIONS
USING FULLY TWO-DIMENSIONAL HLLEC RIEMANN SOLVER
[with R. Liska and B. Wendroff]
In: F. Asakura, H. Aiso, S. Kawashima, A. Matsumura, S. Nishibata and K. Nishihara (eds.): Hyperbolic Problems. Theory, Numerics and Applications II. (Proceedings of HYP 2004).
p. 369-376. Yokohama Publishers, 2006
- TOPOLOGICAL NON-CONNECTIVITY THRESHOLD IN LONG-RANGE SPIN
SYSTEMS
[with F. Borgonovi, G.L. Celardo, A. Musesti and R. Trasarti-Battistoni]
Physical Review E, Vol. 73, No. 2 (2006), p. 026116.
- A NODE RECONNECTION ALGORITHM FOR MIMETIC FINITE DIFFERENCE
DISCRETIZATIONS OF ELLIPTIC EQUATIONS ON TRIANGULAR MESHES
(available here)
[with M. Berndt, K. Lipnikov and M. Shashkov]
Communications in Mathematical Sciences 3, No. 4 (2005), p. 665-680. (Los Alamos Technical Report LA-UR-05-4620)
- ON QUALITY IMPROVEMENT OF TRIANGULAR MESHES USING NODE RECONNECTION
[with R. Garimella]
In: A. Handlovicova, Z. Kriva, K. Mikula, D. Sevcovic (eds.): Proceedings of Algoritmy 2005, 17th Conference on Scientific Computing.
p. 93-102. Slovak University of Technology, Bratislava, Slovakia, 2005
- ALE SIMULATIONS OF HIGH-VELOCITY IMPACT PROBLEM
[with M. Kucharik, R. Liska and J. Limpouch]
Czechoslovak Journal of Physics Vol. 54 (2004), Suppl. C, p. C391-C396.
- FULLY TWO-DIMENSIONAL HLLEC RIEMANN SOLVER AND ASSOCIATED
DIFFERENCE SCHEMES
[with R. Liska and B. Wendroff]
In: M. Feistauer, V. Dolejsi, P. Knobloch, K. Najzar (eds.): Numerical Mathematics and Advanced Applications. ENUMATH 2003.
p. 815-824. Springer Verlag, 2004
- UNTANGLING OF 2D MESHES IN ALE SIMULATIONS
(Preprint here)
[with R. Garimella and M. Shashkov]
Journal of Computational Physics Vol. 196, No. 2 (2004), p. 627-644. (Los Alamos Technical Report LA-UR-03-2424)
- RIEMANN PROBLEMS FOR 2D GAS DYNAMICS - animations
[with R. Liska]
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Last update: January 11, 2010
vachal (at) galileo . fjfi . cvut . cz