Back-illumination imaging of pressurised metered-dose inhaler sprays

Nicholas James Mason-Smith; D. Duke; Marcus Kristian Fedrizzi; Julio Soria; Daniel Michael Edgington-Mitchell; Damon Robert Honnery

Back-illumination imaging of pressurised metered-dose inhaler sprays

Nicholas James Mason-Smith, D. Duke, Marcus Kristian Fedrizzi, Julio Soria, Daniel Michael Edgington-Mitchell, Damon Robert Honnery

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

Abstract

Sprays in the near-nozzle region of a pMDI are imaged with high spatial resolution back-illumination imaging to aid interpretation of laser extinction signals. Spray density varies continuously throughout the spray event, and between events, for all formulations studied. Spray widths increase until approximately 50 ms after the start of injection, after which the spray narrows until the metering chamber is depleted. Fluctuations in optical depth are reduced by the inclusion of ethanol, which reduces fluctuations in spray spread. In addition to many small droplets, visualisations show dense droplet clusters and large droplets.

Original language	English
Title of host publication	Proceedings of the 7th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion
Editors	Damon Honnery, Daniel Edgington-Mitchell
Place of Publication	Clayton Victoria Australia
Publisher	Monash University Publishing
Pages	45 - 50
Number of pages	6
ISBN (Print)	9780646948928
Publication status	Published - 2015
Event	Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion 2015 - Melbourne, Australia Duration: 9 Dec 2015 → 9 Dec 2015 Conference number: 7th

Conference

Conference	Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion 2015
Country/Territory	Australia
City	Melbourne
Period	9/12/15 → 9/12/15

Cite this

Mason-Smith, N. J., Duke, D., Fedrizzi, M. K., Soria, J., Edgington-Mitchell, D. M., & Honnery, D. R. (2015). Back-illumination imaging of pressurised metered-dose inhaler sprays. In D. Honnery, & D. Edgington-Mitchell (Eds.), Proceedings of the 7th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion (pp. 45 - 50). Monash University Publishing.

Mason-Smith, Nicholas James ; Duke, D. ; Fedrizzi, Marcus Kristian et al. / Back-illumination imaging of pressurised metered-dose inhaler sprays. Proceedings of the 7th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion. editor / Damon Honnery ; Daniel Edgington-Mitchell. Clayton Victoria Australia : Monash University Publishing, 2015. pp. 45 - 50

@inproceedings{c87b020350664faeb4509d85e8f7125a,

title = "Back-illumination imaging of pressurised metered-dose inhaler sprays",

abstract = "Sprays in the near-nozzle region of a pMDI are imaged with high spatial resolution back-illumination imaging to aid interpretation of laser extinction signals. Spray density varies continuously throughout the spray event, and between events, for all formulations studied. Spray widths increase until approximately 50 ms after the start of injection, after which the spray narrows until the metering chamber is depleted. Fluctuations in optical depth are reduced by the inclusion of ethanol, which reduces fluctuations in spray spread. In addition to many small droplets, visualisations show dense droplet clusters and large droplets.",

author = "Mason-Smith, {Nicholas James} and D. Duke and Fedrizzi, {Marcus Kristian} and Julio Soria and Edgington-Mitchell, {Daniel Michael} and Honnery, {Damon Robert}",

year = "2015",

language = "English",

isbn = "9780646948928",

pages = "45 -- 50",

editor = "Damon Honnery and Daniel Edgington-Mitchell",

booktitle = "Proceedings of the 7th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion",

publisher = "Monash University Publishing",

note = "Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion 2015 ; Conference date: 09-12-2015 Through 09-12-2015",

}

Mason-Smith, NJ, Duke, D, Fedrizzi, MK, Soria, J , Edgington-Mitchell, DM & Honnery, DR 2015, Back-illumination imaging of pressurised metered-dose inhaler sprays. in D Honnery & D Edgington-Mitchell (eds), Proceedings of the 7th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion. Monash University Publishing, Clayton Victoria Australia, pp. 45 - 50, Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion 2015, Melbourne, Victoria, Australia, 9/12/15.

Back-illumination imaging of pressurised metered-dose inhaler sprays. / Mason-Smith, Nicholas James; Duke, D.; Fedrizzi, Marcus Kristian et al.

Proceedings of the 7th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion. ed. / Damon Honnery; Daniel Edgington-Mitchell. Clayton Victoria Australia : Monash University Publishing, 2015. p. 45 - 50.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

TY - GEN

T1 - Back-illumination imaging of pressurised metered-dose inhaler sprays

AU - Mason-Smith, Nicholas James

AU - Duke, D.

AU - Fedrizzi, Marcus Kristian

AU - Soria, Julio

AU - Edgington-Mitchell, Daniel Michael

AU - Honnery, Damon Robert

N1 - Conference code: 7th

PY - 2015

Y1 - 2015

N2 - Sprays in the near-nozzle region of a pMDI are imaged with high spatial resolution back-illumination imaging to aid interpretation of laser extinction signals. Spray density varies continuously throughout the spray event, and between events, for all formulations studied. Spray widths increase until approximately 50 ms after the start of injection, after which the spray narrows until the metering chamber is depleted. Fluctuations in optical depth are reduced by the inclusion of ethanol, which reduces fluctuations in spray spread. In addition to many small droplets, visualisations show dense droplet clusters and large droplets.

AB - Sprays in the near-nozzle region of a pMDI are imaged with high spatial resolution back-illumination imaging to aid interpretation of laser extinction signals. Spray density varies continuously throughout the spray event, and between events, for all formulations studied. Spray widths increase until approximately 50 ms after the start of injection, after which the spray narrows until the metering chamber is depleted. Fluctuations in optical depth are reduced by the inclusion of ethanol, which reduces fluctuations in spray spread. In addition to many small droplets, visualisations show dense droplet clusters and large droplets.

M3 - Conference Paper

SN - 9780646948928

SP - 45

EP - 50

BT - Proceedings of the 7th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion

A2 - Honnery, Damon

A2 - Edgington-Mitchell, Daniel

PB - Monash University Publishing

CY - Clayton Victoria Australia

T2 - Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion 2015

Y2 - 9 December 2015 through 9 December 2015

ER -

Mason-Smith NJ, Duke D, Fedrizzi MK, Soria J , Edgington-Mitchell DM , Honnery DR. Back-illumination imaging of pressurised metered-dose inhaler sprays. In Honnery D, Edgington-Mitchell D, editors, Proceedings of the 7th Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion. Clayton Victoria Australia: Monash University Publishing. 2015. p. 45 - 50