Buoyancy-driven linear instability in a porous layer with contrasting heat sources
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2025.10867
Abstract: Abstract Double-diffusive linear instability of a power-law fluid flow through porous media with various heat source functions is studied with two permeable infinite parallel walls. The energy balance equation accounts for viscous dissipation, and the… read more here.
Keywords: heat; linear instability; source; instability ... See more keywords
Tightening energetic bounds on linear gyrokinetic instabilities
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377825100767
Abstract: Bounding energetic growth of gyrokinetic instabilities is a complementary approach to linear instability analyses involving normal eigenmodes. Previous work has focused on upper bounds which are valid linearly and nonlinearly. However, if an upper bound… read more here.
Keywords: tightening energetic; linear instability; energetic bounds; growth ... See more keywords
Linear instability of hairy black holes in Horndeski theory
Sign Up to like & getrecommendations! Published in 2024 at "Chinese Physics C"
DOI: 10.1088/1674-1137/ad3eff
Abstract: Horndeski theory constitutes the most general model of scalar-tensor theories. It has attracted much attention in recent years in relation with black holes, celestial dynamics, stability analysis, etc. It is important to note that, for… read more here.
Keywords: linear instability; horndeski theory; instability; instability hairy ... See more keywords
Linear instability of the vertical throughflow in a porous layer saturated by a power-law fluid with variable gravity effect
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DOI: 10.1515/phys-2024-0049
Abstract: Abstract The present study investigates the thermal convection of a power-law fluid in a horizontal porous layer that is heated from below. The study of flow in a porous medium is important because of its… read more here.
Keywords: gravity; power law; linear instability;