1 citations · 3 across the 7 of their papers we have counts for
8 papers
Origin of effective non-Fourier heat conduction phenomena in heterogeneous materials
Róbert Kovács
Phenomenological models of non-Fourier heat conduction often lack a strict microstructural foundation, leading to ambiguities when modeling complex heterogeneous materials. In this…
Thermodynamically consistent initialization of the Maxwell--Cattaneo---Vernotte heat conduction model: Analytical solutions and engineering applications
Zalán Sándor, Róbert Kovács
This paper investigates the numerical initialization of the one-dimensional Maxwell--Cattaneo--Vernotte (MCV) heat conduction model, addressing the critical mathematical challenge…
Discovering correlations between metal foam thermal characteristics and non-Fourier behavior
Anna Fehér, Dániel Cseh, Róbert Kovács
Due to their low density and large specific surface area, metal foams are increasingly used as cellular materials that combine excellent structural and thermal properties. Their ce…
The piston effect in supercritical fluids investigated via a reversible-irreversible vector field splitting-based explicit time integration scheme
Donát M. Takács, Tamás Fülöp, Róbert Kovács +1
In the vicinity of the liquid--vapor critical point, supercritical fluids behave strongly compressibly and, in parallel, thermophysical properties have strong state dependence. The…
Investigating the whirling heat current density in the Guyer--Krumhansl equation
Mátyás Szücs, Carmelo Filippo Munafo, Róbert Kovács
Among the numerous heat conduction models, the Guyer--Krumhansl equation has a special role. Besides its various application possibilities in nanotechnology, cryotechnology, and ev…
Heat equations beyond Fourier: from heat waves to thermal metamaterials
Róbert Kovács
In the past decades, numerous heat conduction models beyond Fourier have been developed to account for the large gradients, fast phenomena, wave propagation, or heterogeneous mater…
Two-field mixed hp-finite elements for time-dependent problems in the refined theories of thermodynamics
Balázs Tóth, Zsombor Molnár, Róbert Kovács
Thanks to modern manufacturing technologies, heterogeneous materials with complex inner structures (e.g., foams) can be easily produced. However, their utilization is not straightf…
The role of the initial states for non-Fourier heat equations
Róbert Kovács
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 part…