Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Kov��cs, R."'
Autor:
Kov��cs, R��bert
There are several models for heat conduction - non-Fourier equations - in the literature that are important for various practical problems. These models manifest themselves in partial differential equations, and the application of which requires deve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35511e6d6581cf43e6597916ac79d208
http://arxiv.org/abs/2201.12284
http://arxiv.org/abs/2201.12284
Autor:
Feh��r, Anna, Kov��cs, R��bert
The heat pulse (flash) experiment is a well-known and widely accepted method to measure the thermal diffusivity of a material. In recent years, it is observed that the thermal behavior of heterogeneous materials can show deviation from the classical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68ac202f69161653b9783730e31b5e6c
http://arxiv.org/abs/2101.01123
http://arxiv.org/abs/2101.01123
Among the three heat conduction modes, the ballistic propagation is the most difficult to model. In the present paper, we discuss its physical interpretations and showing different alternatives to its modeling. We highlight two of them: a thermo-mech
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https://explore.openaire.eu/search/publication?articleId=doi_________::f3940133b5dd4a630141883c6765a7f6
The recent results attained from a thermodynamically conceived numerical scheme applied on wave propagation in viscoelastic/rheological solids are generalized here, both in the sense that the scheme is extended to four spacetime dimensions and in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32dbc01ec111aba9b9676c26553cd8ff
Autor:
V��n, P��ter, Kov��cs, R��bert
Variational principles play a fundamental role in deriving evolution equations of physics. They are working well in case of nondissipative evolution but for dissipative systems they are not unique, not predictive and not constructive. With methods of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73327334f3b131c7f87ff09d4c992b35
On the example of the Poynting-Thomson-Zener rheological model for solids, which exhibits both dissipation and wave propagation - with nonlinear dispersion relation -, we introduce and investigate a finite difference numerical scheme. Our goal is to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96f23e32cd1efd158a3eb49076712239
Autor:
F��l��p, Tam��s, Kov��cs, R��bert, Lovas, ��d��m, Rieth, ��gnes, Fodor, Tam��s, Sz��cs, M��ty��s, V��n, P��ter, Gr��f, Gyula
The non-Fourier heat conduction phenomenon on room temperature is analyzed from various aspects. The first one shows its experimental side, in what form it occurs and how we treated it. It is demonstrated that the Guyer-Krumhansl equation can be the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6807cce85776cb10cacee01d4c3ee94c
Autor:
V��n, P., Barnaf��ldi, G. G., Bulik, T., Bir��, T., Czell��r, S., Cie��lar, M., Czanik, Cs., D��vid, E., Debreceni, E., Denys, M., Dobr��ka, M., Fenyvesi, E., Gondek-Rosi��ska, D., Gr��czer, Z., Hamar, G., Huba, G., Kacskovics, B., Kis, ��., Kov��cs, I., Kov��cs, R., Lemperger, I., L��vai, P., L��k��s, S., Mlynarczyk, J., Moln��r, J., Singh, N., Nov��k, A., Ol��h, L., Starecki, T., Suchenek, M., Sur��nyi, G., Szalai, S., Tringali, M. C., Varga, D., Vas��th, M., V��s��rhelyi, B., Wesztergom, V., W��ber, Z., Zimbor��s, Z., Somlai, L.
Summary of the long term data taking, related to one of the proposed next generation ground-based gravitational detector's location is presented here. Results of seismic and infrasound noise, electromagnetic attenuation and cosmic muon radiation meas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59c341cd1b9f2857c56673cd89f44554
Autor:
Kov��cs, R��bert, V��n, P��ter
Dual phase lag equation for heat conduction is analyzed from the point of view of non-equilibrium thermodynamics. Its first order Taylor series expansion is consistent with the second law as long as the two relaxation times are not negative.
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https://explore.openaire.eu/search/publication?articleId=doi_________::b4a5f3ff83ec70ada14b49cba28a8e7d
Autor:
Kov��cs, R��bert, V��n, P��ter
Second sound phenomenon and ballistic heat conduction, the two wave like propagation modes of heat, are the two most prominent, experimentally observed non-Fourier effects of heat conduction. In this paper we compare three related theories by quantit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ddaa875967d7c63243b74f962b9eb15