Results 31 to 40 of about 51,744 (287)

Bulk and Rayleigh Waves Propagation in Three-Phase Soil with Flow-Independent Viscosity

open access: yesApplied Sciences, 2022
The flow-independent viscosity of the soil skeleton has significant influence on the elastic wave propagation in soils. This work studied the bulk and Rayleigh waves propagation in three-phase viscoelastic soil by considering the contribution of the flow-
Qing Guo   +3 more
doaj   +1 more source

Can Bulk Viscosity Drive Inflation [PDF]

open access: yes, 1987
Contrary to other claims, we argue that, bulk viscosity associated with the interactions of nonrelativistic particles with relativistic particles around the time of the grand unified theory (GUT) phase transition cannot lead to inflation. Simply put, the
Pacher, T.   +2 more
core   +1 more source

Critical exponents and transport properties near the QCD critical endpoint from the statistical bootstrap model

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We present an estimate of the behavior of the shear and bulk viscosity coefficients when the QCD critical point is approached from the hadronic side, describing hadronic matter within the statistical bootstrap model of strong interactions.
Guruprasad Kadam   +2 more
doaj   +1 more source

Bulk viscosity of gaseous argon from molecular dynamics simulations. [PDF]

open access: yes, 2022
The bulk viscosity of dilute argon gas is calculated using molecular dynamics simulations in the temperature range 150-500 K and is found to be proportional to density squared in the investigated range of densities 0.001-1 kg m-3.
Alboul, Lyuba, Lishchuk, Sergey
core   +1 more source

Bulk Viscous Cosmology: Unified Dark Matter

open access: yesAdvances in Astronomy, 2011
The bulk viscosity is introduced to model the current observational cosmos and the unified dark matter (dark matter and dark energy). The viscous unified model assumes that the universe is filled with a single nonperfect fluid with a bulk viscosity.
Xu Dou, Xin-He Meng
doaj   +1 more source

Bulk and shear viscosity in Hagedorn fluid [PDF]

open access: yesAnnalen der Physik, 2010
AbstractAssuming that the Hagedorn fluid composed of known particles and resonances with masses m < 2 GeV obeys the first‐order theory (Eckart) of relativistic fluid, we discuss the transport properties of QCD confined phase. Based on the relativistic kinetic theory formulated under the relaxation time approximation, expressions for bulk and shear ...
Tawfik, A., Wahba, M.
openaire   +2 more sources

Effect of the GUP on the entropy, speed of sound, and bulk to shear viscosity ratio of an ideal QGP

open access: yesNuclear Physics B, 2018
In this work we compute the entropy density, speed of sound, and the resulting impact on the bulk viscosity to shear viscosity ratio of an ideal Quark Gluon Plasma when the effects of a generalized uncertainty principle are taken into consideration. When
Nasser Demir, Elias C. Vagenas
doaj   +1 more source

‘Understanding’ cosmological bulk viscosity [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1996
12 pages, Latex file, to appear in ...
openaire   +2 more sources

Bulk viscosity in holographic Lifshitz hydrodynamics [PDF]

open access: yesJournal of High Energy Physics, 2014
We compute the bulk viscosity in holographic models dual to theories with Lifshitz scaling and/or hyperscaling violation, using a generalization of the bulk viscosity formula derived in arXiv:1103.1657 from the null focusing equation. We find that only a class of models with massive vector fields are truly Lifshitz scale invariant, and have a vanishing
Hoyos, Carlos, Kim, Bom Soo, Oz, Yaron
openaire   +2 more sources

Bulk viscosity of multiparticle collision dynamics fluids [PDF]

open access: yes, 2015
We determine the viscosity parameters of the multiparticle collision dynamics (MPC) approach, a particle-based mesoscale hydrodynamic simulation method for fluids. We perform analytical calculations and verify our results by simulations.
Theers, Mario, Winkler, Roland G.
core   +1 more source

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