Dependence of bulk viscosity of polypropylene on strain, strain rate, and melt temperature
Sign Up to like & getrecommendations! Published in 2017 at "Polymer Engineering and Science"
DOI: 10.1002/pen.24459
Abstract: The relations between bulk viscosity, strain, strain rate and melt temperature of polypropylene are investigated in uniaxial compression similar to the measurement of PVT diagram of a polymer. A new and more practical bulk viscosity… read more here.
Keywords: melt temperature; strain rate; viscosity; bulk viscosity ... See more keywords
Bulk viscous Bianchi-V cosmological model within the formalism of $f(R,T)=f_{1}(R)+f_{2}(R)f_{3}(T) $ gravity
Sign Up to like & getrecommendations! Published in 2019 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-019-3628-7
Abstract: In this paper, we have studied transitioning Bianchi-V cosmological universe with bulk viscous matter within formalism of $f(R,T) $ gravity. The negative pressure which is generated by bulk viscosity may act as dark energy component… read more here.
Keywords: bulk viscosity; bulk; model; mathit eff ... See more keywords
Wormholes in a viscous universe
Sign Up to like & getrecommendations! Published in 2021 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2021.100944
Abstract: We study the static and spherically symmetric wormhole spacetime configurations at present time in a viscous universe. Considering three classes of viscous models, i.e., bulk viscosity as a function of Hubble constant H0, present cosmic… read more here.
Keywords: universe wormholes; viscous universe; bulk viscosity; viscosity ... See more keywords
A holographic reconstruction scheme for f(R) gravity and the study of stability and thermodynamic consequences
Sign Up to like & getrecommendations! Published in 2020 at "New Astronomy"
DOI: 10.1016/j.newast.2019.101321
Abstract: Abstract The present paper reports a study of the reconstruction of f(R) gravity from holographic Ricci dark energy, a specific case of Nojiri–Odintsov holographic DE (ref Nojiri and Odinstov, 2005a), in the presence of bulk… read more here.
Keywords: reconstruction; gravity; reconstruction scheme; bulk viscosity ... See more keywords
How important is the liquid bulk viscosity effect on the dynamics of a single cavitation bubble?
Sign Up to like & getrecommendations! Published in 2018 at "Ultrasonics sonochemistry"
DOI: 10.1016/j.ultsonch.2018.07.013
Abstract: The influence of liquid bulk viscosity on the dynamics of a single cavitation bubble is numerically studied via Gilmore model with a new modified boundary condition at bubble interface. In order to more accurately describe… read more here.
Keywords: liquid bulk; dynamics single; single cavitation; bulk viscosity ... See more keywords
Continuum perspective of bulk viscosity in compressible fluids
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2016.834
Abstract: Kinetic theory and acoustic measurements have proven that the bulk viscosity associated with the expansion or compression effect cannot be ignored in compressible fluids except for monatomic gases. A new theoretical formula for the bulk… read more here.
Keywords: stix; unicode stix; stix x1d701; bulk viscosity ... See more keywords
Viscous cosmologies
Sign Up to like & getrecommendations! Published in 2019 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ab45bb
Abstract: We probe into universes filled with Quark Gluon Plasma with non-zero viscosities. In particular, we study the evolution of a universe with non-zero shear viscosity motivated by the theoretical result of a non-vanishing shear viscosity… read more here.
Keywords: non zero; viscosity; shear viscosity; bulk viscosity ... See more keywords
Bulk viscosity for interacting strange quark matter and r-mode instability windows for strange stars
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics C"
DOI: 10.1088/1674-1137/abc0cd
Abstract: We investigate the bulk viscosity of strange quark matter in the framework of the equivparticle model, where analytical formulae are obtained for certain temperature ranges, which can be readily applied to those with various quark… read more here.
Keywords: strange stars; bulk viscosity; mode instability; quark matter ... See more keywords
Projecting the likely importance of weak-interaction-driven bulk viscosity in neutron star mergers
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2793
Abstract: In this work, we estimate how much bulk viscosity driven by Urca processes is likely to affect the gravitational wave signal of a neutron star coalescence. In the late inspiral, we show that bulk viscosity… read more here.
Keywords: merger; neutron star; viscosity; bulk viscosity ... See more keywords
Bulk viscosity in a neutron star mantle
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty2639
Abstract: We study the bulk viscosity in two (anti-spaghetti and Swiss cheese) phases of non- spherical nuclei in the mantle of an oscillating neutron star near the boundary with the stellar core. The bulk viscosity is… read more here.
Keywords: neutron star; viscosity; mantle; bulk viscosity ... See more keywords
Bulk viscosity of resonating fermions revisited: Kubo formula, sum rule, and the dimer and high-temperature limits
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.102.023310
Abstract: The bulk viscosity of two-component fermions with a zero-range interaction is revisited both in two and three dimensions. We first point out that the ``standard'' Kubo formula employed in recent studies has flaws to give… read more here.
Keywords: bulk viscosity; kubo formula; sum rule; viscosity ... See more keywords