نتایج جستجو برای: spray modeling

تعداد نتایج: 409687  

2015
Lei Chen Xuening Fei Yuman Dai Min Ji Hongwei Zhang Xiumei Jiao

A spraying evaporation system applied to brine disposal is reported, which is mainly used for disposing the brine with concentration more than 100,000 mg/L. A computational fluid dynamics (CFD) simulation has been carried out to study the brine droplet evaporation and diffusion process in high temperature air flow. A discrete-phase model in spraying evaporation system is developed and a simulat...

2002
SURESH K. AGGARWAL

A simplified spray environment is used to represent the multicomponent nature of liquid fuels and to examine the sensitivity of their vaporization behavior to the various liquidand gas-phase models. Liquid-phase models are the diffusion limit, the infinite diffusion, and the vortex. Gas-phase models are the Ranz-Marshall correlation and the axisymmetric model. Three subsets of equations are sol...

Journal: :The Science of the total environment 2007
Amitava Bandyopadhyay Manindra N Biswas

The present article aims at developing simple realistic models in order to describe the gaseous removal process of SO(2) by absorption with and without chemical reaction in spray towers. Effects of droplet size, droplet velocity, superficial gas velocity, liquid flow rate and tower height on the performance of such a system are theoretically predicted. Model calculations bring out some very int...

2008
S. V. Apte P. Moin

A stochastic subgrid model for large-eddy simulation of atomizing spray is developed. Following Kolmogorov!s concept of viewing solid particle-breakup as a discrete random process, atomization of liquid blobs at high relative liquid-to-gas velocity is considered in the framework of uncorrelated breakup events, independent of the initial droplet size. Kolmogorov!s discrete model of breakup is re...

2007
Gary Dorr Jim Hanan Steve Adkins Andrew Hewitt Barry Noller

Pesticides are widely used in agriculture for the management of pests (weeds, insects or pathogens). They are generally applied as a spray to cover the target (e.g. an insect, leaf surfaces or part of a plant) with pesticide-laden droplets. Spray may, however, be lost to nontarget areas within a crop through deposition on to the soil or on non-target plant surfaces. The plant architecture of th...

2014

FULL PRESCRIBING INFORMATION 1 INDICATIONS AND USAGE 1.1 Allergic Rhinitis Azelastine Hydrochloride Nasal Spray 0.1% and 0.15% is indicated for the relief of the symptoms of seasonal and perennial allergic rhinitis in patients 6 years of age and older. 2 DOSAGE AND ADMINISTRATION 2.1 Seasonal Allergic Rhinitis In children 6 to 11 years of age, the recommended dose of Azelastine Hydrochloride Na...

2017
Yong Wang Yu-song Yu Guo-xiu Li Tao-ming Jia

The macro characteristics and configurations of induced shock waves of the supersonic sprays are investigated by experimental methods. Visualization study of spray shape is carried out with the high-speed camera. The macro characteristics including spray tip penetration, velocity of spray tip and spray angle are analyzed. The configurations of shock waves are investigated by Schlieren technique...

Journal: :Pest management science 2014
Dieter Foqué Jan G Pieters David Nuyttens

BACKGROUND Spray boom systems, an alternative to the predominantly-used spray guns, have the potential to considerably improve crop protection management in glasshouses. Based on earlier experiments, the further optimization of the deposits of a medium spray quality extended range flat fan nozzle type using easy adjustable spray boom settings was examined. Using mineral chelate tracers and wate...

2007
Walfre Franco Henry Vu Wangcun Jia J. Stuart Nelson Guillermo Aguilar

The objective of the present work is to correlate the timedependent flow characteristics of cryogen sprays to the induced thermal dynamics at the surface of a human skin model. First, a numerical analysis to evaluate our skin model is carried out. Next, diameter and axial velocity of droplets impinging onto the skin model are measured. Diameter, velocity and surface temperature are acquired sim...

ژورنال: تحقیقات موتور 2018
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with developing of optical technologies, using of different imaging methods to study various properties of gasoline direct injection spray is under development. Scope of this article is  to study the effect of overall spray angle and spray projected area for determination of spray propagation and investigate the effectiveness of this criterion.  The injector was a multi-hole direct injection in...

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