Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Witold Alda"'
Autor:
MONIKA RYCHCIK, JAROSŁAW BOŚKO, JAROSŁAW RYBICKI, WITOLD ALDA, WITOLD DZWINEL, GIORGIO MANCINI, LAURO FIORETTI
Publikováno v:
TASK Quarterly, Vol 5, Iss 1 (2001)
In the paper we make a short overview of computer models based on particle approach, which can be suitable for the simulation of fluid flow through porous media. We concentrate on Molecular Dynamics (MD) and Dissipative Particle Dynamics (DPD) method
Externí odkaz:
https://doaj.org/article/78870ceef7d74a6486ec2946d06c7e8c
Publikováno v:
TASK Quarterly, Vol 5, Iss 1 (2001)
In the paper a method for modeling flows in the presence of interacting particles is briefly presented. The method is based on merging classical, continuous approach of numerical solution of NavierStokes equations on the 2D mesh with discrete particl
Externí odkaz:
https://doaj.org/article/b462ebc3f42f498baccded19f99ade44
Autor:
AGNIESZKA WITKOWSKA, JAROSŁAW RYBICKI, ROBERT LASKOWSKI, GIORGIO MANCINI, SANDRO FELIZIANI, WITOLD ALDA
Publikováno v:
TASK Quarterly, Vol 3, Iss 2 (1999)
We report on the results of classical molecular dynamics (MD) simulations of structure of amorphous 15 Bi203 85 SiO2 [% mol] and 40 Bi2O3 60 SiO2 [% mol], and their totally reduced forms, 15 Bi2 85 SiO2 [% mol], and 40 Bi2 60 SiO2 [% mol], respective
Externí odkaz:
https://doaj.org/article/429bfaea95594625bed0dad6c433d3a8
Publikováno v:
TASK Quarterly, Vol 1, Iss 1 (1997)
A new model for thermal convection simulations using molecular dynamics (MD) approach is reported briefly. Preliminary results are presented. Development of the method is discussed in short.
Externí odkaz:
https://doaj.org/article/7cf265ef149f43e8be4d8a779701f5d1
Autor:
Michał Radziszewski, Witold Alda
Publikováno v:
Computer Science, Vol 9, p 109 (2008)
In the paper we present a method of direct access to single blocks of JPEG files whichcontain textures, with on-the-fly decompression. Anisotropic, adaptive filtering is applied inorder to minimize visual defects appearing mainly on blocks borders. M
Externí odkaz:
https://doaj.org/article/33cd9ca31cb14f16941e37027cc307be
Autor:
Witold Alda, Pawel Kobak
Publikováno v:
Computer Science. 18:241
The paper presents a simulation and rendering model of three dimensional covective cloud evolution. The model is physically based, however its purpose is graphical. The main stress is put on balancing two parts of a model: the atmsphere simulation wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ced12108c7f177586315e0477255763
https://doi.org/10.7494/csci.2017.18.3.1491
https://doi.org/10.7494/csci.2017.18.3.1491
Publikováno v:
Molecular Simulation. 25:361-384
We propose here the usage of different discrete particle methods for simulating both mesoscopic and macroscopic phenomena with hierarchical structures. Results of large-scale MD simulations of the Rayleigh-Taylor instability are shown and discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a705e751795367c820f3ebc017a83c41
https://doi.org/10.1080/08927020008028167
https://doi.org/10.1080/08927020008028167
Publikováno v:
Physica D: Nonlinear Phenomena. 146:261-274
The traditional continuum approach of modeling chemical reactions with specified kinetic rates suffers from numerical difficulties in reactive flows and other highly non-equilibrium situations due to the stiffness of the differential equations in bot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8dc4cf7cd89f2ff99adcb90b13bef213
https://doi.org/10.1016/s0167-2789(00)00150-0
https://doi.org/10.1016/s0167-2789(00)00150-0
Autor:
Krzysztof Boryczko, Witold Alda, Jacek Kitowsk, Stanisława Kluska-Nawarecka, Zbigniew Górny, Witold Dzwinel
Publikováno v:
IFAC Proceedings Volumes. 33:561-564
Advantages and disadvantages of discrete (particle) models applied in numerical simulations of porous material penetrated by liquid metal in foundry process are discussed. Emphasis is put on the usage of Dissipative Particle Dynamics (DPD) method and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76343c9171fa335b62aa592f5253db0b
https://doi.org/10.1016/s1474-6670(17)39464-8
https://doi.org/10.1016/s1474-6670(17)39464-8
Publikováno v:
Scopus-Elsevier
Results of 2D molecular dynamics (MD) method are presented for the mixing phenomenon in the microscale, where the length and time are measured in terms of microns and nanoseconds, respectively. Particle ensembles consisting of 0.7‐3 10 6 particles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c9cedf41e7159f8afaacbdc422e07eb
https://doi.org/10.1016/s0167-2789(99)00177-3
https://doi.org/10.1016/s0167-2789(99)00177-3