Characterization of Full Cone Nozzles

Kohnen, Boris; Pieloth, D.; Musemic, Emir; Walzel, Peter

doi:10.1615/atomizspr.2011003262

Cited by 9 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The result is the oscillating behaviour shown in the plots. A close inspection of the graphs reveals that larger drops are more likely to occur far from the axis of the plumes, a result which is in agreement with previous findings about the drop size distribution generated by full cone nozzles [17,11]. Fig.…”

Section: Results Provided By Phase-doppler Anemometrysupporting

confidence: 91%

A methodology to investigate the behaviour of urea-water sprays in high temperature air flow for SCR de-NOxapplications

Postrioti

Brizi

Ungaro

et al. 2015

Fuel

View full text Add to dashboard Cite

Section: Results Provided By Phase-doppler Anemometrysupporting

confidence: 91%

A methodology to investigate the behaviour of urea-water sprays in high temperature air flow for SCR de-NOxapplications

Postrioti

Brizi

Ungaro

et al. 2015

Fuel

View full text Add to dashboard Cite

“…This nozzle is quite different compared to spiral channel nozzles [45] or spiral flow nozzles [46,47] with which it can be confused. Generally, a lot of works have been carried out on nozzles creating a full-cone spray in various application fields [48][49][50][51][52][53][54][55][56][57][58]. Conversely, the amount of works on nozzles with a spiral geometry is quite limited despite the fact that they possess several very interesting features [59]:…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Spray Breakup in Turbulent Atomization Using a Spiral Nozzle

2019

View full text Add to dashboard Cite

Spiral nozzles are widely used in wet scrubbers to form an appropriate spray pattern to capture the polluting gas/particulate matterwith the highest possible efficiency. Despite this fact, and a fact that it is a nozzle with a very atypical spray pattern (a full cone consisting of three concentric hollow cones), very limited amount of studies have been done so far on characterization of this type of nozzle. This work reports preliminary results on the spray characteristics of a spiral nozzle used for gas absorption processes. First, we experimentally measured the pressure impact footprint of the spray generated. Then effective spray angles were evaluated from the photographs of the spray and using the pressure impact footprint records via Archimedean spiral equation. Using the classical photography, areas of primary and secondary atomization were determined together with the droplet size distribution, which were further approximated using selected distribution functions. Radial and tangential spray velocity of droplets were assessed using the laser Doppler anemometry. The results show atypical behavior compared to different types of nozzles. In the investigated measurement range, the droplet-size distribution showed higher droplet diameters (about 1 mm) compared to, for example, air assisted atomizers. It was similar for the radial velocity, which was conversely lower (max velocity of about 8 m/s) compared to, for example, effervescent atomizers, which can produce droplets with a velocity of tens to hundreds m/s. On the contrary, spray angle ranged from 58° and 111° for the inner small and large cone, respectively, to 152° for the upper cone, and in the measured range was independent of the inlet pressure of liquid at the nozzle orifice.

show abstract

“…In the oil and gas production, these nozzles are now used for cleaning the scale deposits along the production tubing resulted mainly from salt crystallization due to pressure and temperature drop. Detailed characterizations of flat-fan nozzle in terms of droplet sizes and mean velocities will benefit momentum computations for the axial and radial distribution along the spray width, with the view of finding the best stand-off distance between the target scale and the spray nozzle, while the droplet sizes and the velocities determine the momentum at impact, although measuring droplet sizes has been known to be difficult especially in the high density spray region [5,6], still laboratory characterization of nozzles provides a reliable data especially as it can avoid uncontrollable parameters [7].…”

mentioning

confidence: 99%

Impact Pressure Distribution in Flat Fan Nozzles for Descaling Oil Wells

Abbas¹,

Nasr²,

Nourian³

et al. 2016

JEPE

View full text Add to dashboard Cite

Abstract:The suitability of high pressure nozzles in terms of impact upon targeted surfaces has indicated its effectiveness for the cleaning of oil production tubing scale, which has recently attracted wider industrial applications considering its efficiency, ease of operation and cost benefit. In the oil and gas production, these nozzles are now used for cleaning the scale deposits along the production tubing resulted mainly from salt crystallization due to pressure and temperature drop. Detailed characterizations of flat-fan nozzle in terms of droplet sizes and mean velocities will benefit momentum computations for the axial and radial distribution along the spray width, with the view of finding the best stand-off distance between the target scale and the spray nozzle. While the droplet sizes and the velocities determine the momentum at impact, measuring droplet sizes has been known to be difficult especially in the high density spray region, still laboratory characterization of nozzles provides a reliable data especially avoiding uncontrollable parameters. While several researches consider break up insensitive to the cleaning performance, this research investigates the experimental data obtained using PDA (phase doppler anemometry) which led to established variation in momentum across the spray width thus, non-uniformity of impact distribution. Comparative model was then developed using Ansys Fluent code, which verifies the eroded surfaces of material using the flat-fan atomizer to have shown variability in the extent of impact actions due to kinetic energy difference between the center and edge droplets. The study's findings could be useful in establishing the effect of droplet kinetic energies based on the spray penetration, and will also add significant understanding to the effect of the ligaments and droplets, along the spray penetration in order to ascertain their momentum impact distribution along the targeted surface.

show abstract

Characterization of Full Cone Nozzles

Cited by 9 publications

References 0 publications

A methodology to investigate the behaviour of urea-water sprays in high temperature air flow for SCR de-NOxapplications

A methodology to investigate the behaviour of urea-water sprays in high temperature air flow for SCR de-NOxapplications

Experimental Study on Spray Breakup in Turbulent Atomization Using a Spiral Nozzle

Impact Pressure Distribution in Flat Fan Nozzles for Descaling Oil Wells

Contact Info

Product

Resources

About