Results 21 to 30 of about 2,805,615 (282)

Interactions between dry-air entrainment, surface evaporation and convective boundary-layer development [PDF]

open access: yes, 2009
The influence of dry-air entrainment on surface heat fluxes and the convective boundary-layer (CBL) properties is studied for vegetated land surfaces, using a mixed-layer CBL model coupled to the Penman¿Monteith equation under a wide range of conditions.
Heerwaarden, C.C., van   +3 more
core   +1 more source

Lateral entrainment rate in shallow cumuli: Dependence on dry air sources and probability density functions

open access: yesGeophysical Research Letters, 2012
Entrainment processes in convective clouds often occur stochastically and entrainment rate estimates depend on the distance from the cloud from which the dry air is entrained.
Chunsong Lu   +3 more
doaj   +1 more source

Air entrainment in a vertical dropshaft with limited air supply

open access: yesTheoretical and Applied Mechanics Letters, 2018
Dropshafts are vertical structures widely used in urban drainage systems and buildings for water transportation. In this paper, a physical model study was conducted to investigate the air entrainment in the dropshaft under various flow regimes with and ...
Qiang Ding, Yiyi Ma, David Z. Zhu
doaj   +1 more source

Dust emission by powder handling: Comparison between numerical analysis and experimental results [PDF]

open access: yes, 2009
The dust generation occurring during the handling of bulk materials in free falls or at the impact on a stockpile can be a source of danger for the operators health.
Charru, François   +5 more
core   +1 more source

Numerical modelling of air entrainment: In hydraulic engineering [PDF]

open access: yes, 2021
Air entrainment in water flows is a natural phenomenon prone to take place when energy is dissipated in flowing water. In nature, air entrainment appears as white water in waterfalls or in waves breaking on the beach.
Almeland, Silje Kreken
core   +1 more source

An Observational Study of Entrainment Rate in Deep Convection

open access: yesAtmosphere, 2015
This study estimates entrainment rate and investigates its relationships with cloud properties in 156 deep convective clouds based on in-situ aircraft observations during the TOGA-COARE (Tropical Ocean Global Atmosphere Coupled Ocean Atmosphere Response ...
Xiaohao Guo   +4 more
doaj   +1 more source

Two-phase numerical study of the flow field formed in water pump sump: influence of air entrainment [PDF]

open access: yes, 2009
In a pump sump it is imperative that the amount of non-homogenous flow and entrained air be kept to a minimum. Free air-core vortex occurring at a water-intake pipe is an important problem encountered in hydraulic engineering.
Abustam, Effendi   +28 more
core   +1 more source

Numerical investigation of air-entrainment in skimming flow over stepped spillways

open access: yesTheoretical and Applied Mechanics Letters, 2016
As a widely used flood energy dissipator, the stepped spillway can significantly dissipate the kinetic or hydraulic energy due to the air-entrainment in skimming flow over the steps.
Jiemin Zhan, Jianbo Zhang, Yejun Gong
doaj   +1 more source

Turbulent Characteristics and Air Entrainment Patterns in Breaking Surge Waves

open access: yesFluids, 2021
Breaking surge waves are highly turbulent three-dimensional (3D) flows, which occur when the water flow encounters a sudden change in depth or velocity.
Zhuoran Li   +2 more
doaj   +1 more source

Hydraulic Performance of Wave-Type Flow at a Sill-Controlled Stilling Basin

open access: yesApplied Sciences, 2023
Downstream of the sluice gate or weir, wave-type flows inevitably occur in stilling basins with no tailwater. This paper aims to investigate the hydraulic performance of wave-type flows at a sill-controlled stilling basin through experimental research ...
Yu Zhou   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy