Results 21 to 30 of about 54,360 (305)

Interaction Between Convection and Pulsation [PDF]

open access: yes, 2015
This article reviews our current understanding of modelling convection dynamics in stars. Several semi-analytical time-dependent convection models have been proposed for pulsating one-dimensional stellar structures with different formulations for how the
A Baglin   +273 more
core   +4 more sources

Effect of the Gap Matching Relation on the Pressure Pulsation Characteristics at Blade’s Surface of the Multiphase Pump

open access: yesMachines, 2022
The pressure pulsation characteristics of the blade’s surface have an impact on the lifespan of the multiphase pump impeller. To explore the influence of the gap matching relation on the pressure pulsation characteristics at blade’s surface of the pump ...
Guangtai Shi   +3 more
doaj   +1 more source

LES of additive and non-additive pulsatile flows in a model arterial stenosis [PDF]

open access: yes, 2010
Transition of additive and non-additive pulsatile flows through a simple 3D model of arterial stenosis is investigated by using a large eddy simulation (LES) technique. We find in both the pulsatile cases that the interaction of the two shear layers, one
Fung YC   +5 more
core   +1 more source

Pulsations of intermediate-mass stars on the asymptotic giant branch [PDF]

open access: yes, 2017
Evolutionary tracks from the zero age main sequence to the asymptotic giant branch were computed for stars with initial masses 2M_\odot
Brown, André EX   +11 more
core   +4 more sources

Intraocular Pressure Reduction Is Associated with Reduced Venous Pulsation Pressure

open access: yesPLOS ONE, 2016
To explore whether alterations in intraocular pressure (IOP) affect vein pulsation properties using ophthalmodynamometric measures of vein pulsation pressure.Glaucoma patients had two retinal vein pulsation pressure (VPP) measurements from upper and lower hemiveins performed by ophthalmodynamometry at least 3 months apart.
Morgan, William H.   +6 more
openaire   +5 more sources

Optimized Reduction in Draft Tube Pressure Pulsation for a Francis Turbine [PDF]

open access: yesJournal of Applied Fluid Mechanics
As a core component of hydroelectric power generation, the stable and safe operation of the Francis turbine is very important for the operation of the project. Therefore, attention must be paid to the problem of pressure pulsation in the Francis turbine.
J. Lu, R. Tao
doaj   +1 more source

Evolution and the period-luminosity relation for red supergiants in the Magellanic Clouds [PDF]

open access: yes, 2013
Excitation of radial pulsations in red supergiants of Magellanic Clouds is investigated using the stellar evolution calculations and the self-consistent solution of the equations of radiation hydrodynamics and turbulent convection. The stars with initial
Fadeyev, Yuri A.
core   +1 more source

Pulsation-triggered mass loss from AGB stars: the 60-day critical period

open access: yes, 2016
Low- and intermediate-mass stars eject much of their mass during the late, red giant branch (RGB) phase of evolution. The physics of their strong stellar winds is still poorly understood.
McDonald, Iain, Zijlstra, Albert
core   +1 more source

Investigation of Unsteady Pressure Pulsation in New Type Dishwasher Pump with Special Double Tongue Volute

open access: yesShock and Vibration, 2022
Through numerical simulations, this work analyzes the unsteady pressure pulsation characteristics in new type of dishwasher pump with double tongue volute and single tongue volute, under volute static and rotation conditions.
Jinfeng Zhang   +5 more
doaj   +1 more source

Experimental Investigation of Unsteady Pressure Pulsation in New Type Dishwasher Pump with Special Double-Tongue Volute

open access: yesMachines, 2021
A pressure pulsation experiment of a dishwasher pump with a passive rotation double-tongue volute was carried out and compared with the pressure pulsation of a single-tongue volute and a static double-tongue volute.
Yilei Zhu   +5 more
doaj   +1 more source

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