Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It

Zuhaib Nissar; A. Rashid A. Aziz; Morgan R. Heikal; Mhadi A. Ismael

doi:10.1007/978-981-19-1939-8_13

Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It

Zuhaib Nissar^*
, A. Rashid A. Aziz
, Morgan R. Heikal
, Mhadi A. Ismael

^*Corresponding author for this work

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

Abstract

Puffing/microexplosion potentially increases atomization and enables better air–fuel mixing in sprays, thereby improving combustion.In this paper, we have investigated the physics leading to puffing and microexplosion in fuel droplets and identified factors such as droplet detachment modes and droplet-air interaction that influence puffing/microexplosion.A microsyringe is used to inject droplets as small as 100 μm radius in a control volume chamber maintained at 500 ℃ and atmospheric pressure.Droplet dynamics are captured using high-speed camera coupled with a long-distance microscopic lens using backlight illumination technique as the droplet traverses and undergoes puffing and microexplosion.In-house image processing codes are used to track droplet motion and compute its geometrical parameters, which enable us to decipher microexplosion dynamics.During this study, two significant factors were identified to cause puffing/microexplosion; thinning of droplet shell and interfacial instabilities.A general trend of increasing puffing times was observed with increasing droplet radii.The modes of detachment do affect the instabilities at the droplet surface which further amplify them and causes early puffing.Furthermore, the rate of bubble growth was amplified for the droplets traversing at higher Reynolds number.

Original language	English
Title of host publication	ICPER 2020 - Proceedings of the 7th International Conference on Production, Energy and Reliability
Editors	Faiz Ahmad, Hussain H. Al-Kayiem, William Pao King Soon
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	147-160
Number of pages	14
ISBN (Print)	9789811919381
DOIs	https://doi.org/10.1007/978-981-19-1939-8_13
State	Published - 2023
Externally published	Yes
Event	7th International Conference on Production, Energy and Reliability, ICPER 2020 - Kuching, Malaysia Duration: 14 Jul 2020 → 16 Jul 2020

Publication series

Name	Lecture Notes in Mechanical Engineering
ISSN (Print)	2195-4356
ISSN (Electronic)	2195-4364

Conference

Conference	7th International Conference on Production, Energy and Reliability, ICPER 2020
Country/Territory	Malaysia
City	Kuching
Period	14/07/20 → 16/07/20

Bibliographical note

Publisher Copyright:
© 2023, Institute of Technology PETRONAS Sdn Bhd.

ASJC Scopus subject areas

Automotive Engineering
Aerospace Engineering
Mechanical Engineering
Fluid Flow and Transfer Processes

Access to Document

10.1007/978-981-19-1939-8_13

Cite this

Nissar, Z., Aziz, A. R. A., Heikal, M. R., & Ismael, M. A. (2023). Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It. In F. Ahmad, H. H. Al-Kayiem, & W. P. King Soon (Eds.), ICPER 2020 - Proceedings of the 7th International Conference on Production, Energy and Reliability (pp. 147-160). (Lecture Notes in Mechanical Engineering). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-981-19-1939-8_13

Nissar, Zuhaib ; Aziz, A. Rashid A. ; Heikal, Morgan R. et al. / Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It. ICPER 2020 - Proceedings of the 7th International Conference on Production, Energy and Reliability. editor / Faiz Ahmad ; Hussain H. Al-Kayiem ; William Pao King Soon. Springer Science and Business Media Deutschland GmbH, 2023. pp. 147-160 (Lecture Notes in Mechanical Engineering).

@inproceedings{f35c364ea7ce4acc85d3073bbde40008,

title = "Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It",

abstract = "Puffing/microexplosion potentially increases atomization and enables better air–fuel mixing in sprays, thereby improving combustion.In this paper, we have investigated the physics leading to puffing and microexplosion in fuel droplets and identified factors such as droplet detachment modes and droplet-air interaction that influence puffing/microexplosion.A microsyringe is used to inject droplets as small as 100 μm radius in a control volume chamber maintained at 500 ℃ and atmospheric pressure.Droplet dynamics are captured using high-speed camera coupled with a long-distance microscopic lens using backlight illumination technique as the droplet traverses and undergoes puffing and microexplosion.In-house image processing codes are used to track droplet motion and compute its geometrical parameters, which enable us to decipher microexplosion dynamics.During this study, two significant factors were identified to cause puffing/microexplosion; thinning of droplet shell and interfacial instabilities.A general trend of increasing puffing times was observed with increasing droplet radii.The modes of detachment do affect the instabilities at the droplet surface which further amplify them and causes early puffing.Furthermore, the rate of bubble growth was amplified for the droplets traversing at higher Reynolds number.",

author = "Zuhaib Nissar and Aziz, \{A. Rashid A.\} and Heikal, \{Morgan R.\} and Ismael, \{Mhadi A.\}",

note = "Publisher Copyright: {\textcopyright} 2023, Institute of Technology PETRONAS Sdn Bhd.; 7th International Conference on Production, Energy and Reliability, ICPER 2020 ; Conference date: 14-07-2020 Through 16-07-2020",

year = "2023",

doi = "10.1007/978-981-19-1939-8\_13",

language = "English",

isbn = "9789811919381",

series = "Lecture Notes in Mechanical Engineering",

publisher = "Springer Science and Business Media Deutschland GmbH",

pages = "147--160",

editor = "Faiz Ahmad and Al-Kayiem, \{Hussain H.\} and \{King Soon\}, \{William Pao\}",

booktitle = "ICPER 2020 - Proceedings of the 7th International Conference on Production, Energy and Reliability",

address = "Germany",

}

Nissar, Z, Aziz, ARA, Heikal, MR & Ismael, MA 2023, Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It. in F Ahmad, HH Al-Kayiem & WP King Soon (eds), ICPER 2020 - Proceedings of the 7th International Conference on Production, Energy and Reliability. Lecture Notes in Mechanical Engineering, Springer Science and Business Media Deutschland GmbH, pp. 147-160, 7th International Conference on Production, Energy and Reliability, ICPER 2020, Kuching, Malaysia, 14/07/20. https://doi.org/10.1007/978-981-19-1939-8_13

Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It. / Nissar, Zuhaib; Aziz, A. Rashid A.; Heikal, Morgan R. et al.
ICPER 2020 - Proceedings of the 7th International Conference on Production, Energy and Reliability. ed. / Faiz Ahmad; Hussain H. Al-Kayiem; William Pao King Soon. Springer Science and Business Media Deutschland GmbH, 2023. p. 147-160 (Lecture Notes in Mechanical Engineering).

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

TY - GEN

T1 - Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It

AU - Nissar, Zuhaib

AU - Aziz, A. Rashid A.

AU - Heikal, Morgan R.

AU - Ismael, Mhadi A.

PY - 2023

Y1 - 2023

N2 - Puffing/microexplosion potentially increases atomization and enables better air–fuel mixing in sprays, thereby improving combustion.In this paper, we have investigated the physics leading to puffing and microexplosion in fuel droplets and identified factors such as droplet detachment modes and droplet-air interaction that influence puffing/microexplosion.A microsyringe is used to inject droplets as small as 100 μm radius in a control volume chamber maintained at 500 ℃ and atmospheric pressure.Droplet dynamics are captured using high-speed camera coupled with a long-distance microscopic lens using backlight illumination technique as the droplet traverses and undergoes puffing and microexplosion.In-house image processing codes are used to track droplet motion and compute its geometrical parameters, which enable us to decipher microexplosion dynamics.During this study, two significant factors were identified to cause puffing/microexplosion; thinning of droplet shell and interfacial instabilities.A general trend of increasing puffing times was observed with increasing droplet radii.The modes of detachment do affect the instabilities at the droplet surface which further amplify them and causes early puffing.Furthermore, the rate of bubble growth was amplified for the droplets traversing at higher Reynolds number.

AB - Puffing/microexplosion potentially increases atomization and enables better air–fuel mixing in sprays, thereby improving combustion.In this paper, we have investigated the physics leading to puffing and microexplosion in fuel droplets and identified factors such as droplet detachment modes and droplet-air interaction that influence puffing/microexplosion.A microsyringe is used to inject droplets as small as 100 μm radius in a control volume chamber maintained at 500 ℃ and atmospheric pressure.Droplet dynamics are captured using high-speed camera coupled with a long-distance microscopic lens using backlight illumination technique as the droplet traverses and undergoes puffing and microexplosion.In-house image processing codes are used to track droplet motion and compute its geometrical parameters, which enable us to decipher microexplosion dynamics.During this study, two significant factors were identified to cause puffing/microexplosion; thinning of droplet shell and interfacial instabilities.A general trend of increasing puffing times was observed with increasing droplet radii.The modes of detachment do affect the instabilities at the droplet surface which further amplify them and causes early puffing.Furthermore, the rate of bubble growth was amplified for the droplets traversing at higher Reynolds number.

UR - https://www.scopus.com/pages/publications/85140750461

U2 - 10.1007/978-981-19-1939-8_13

DO - 10.1007/978-981-19-1939-8_13

M3 - Conference contribution

AN - SCOPUS:85140750461

SN - 9789811919381

T3 - Lecture Notes in Mechanical Engineering

SP - 147

EP - 160

BT - ICPER 2020 - Proceedings of the 7th International Conference on Production, Energy and Reliability

A2 - Ahmad, Faiz

A2 - Al-Kayiem, Hussain H.

A2 - King Soon, William Pao

PB - Springer Science and Business Media Deutschland GmbH

T2 - 7th International Conference on Production, Energy and Reliability, ICPER 2020

Y2 - 14 July 2020 through 16 July 2020

ER -

Nissar Z, Aziz ARA, Heikal MR, Ismael MA. Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It. In Ahmad F, Al-Kayiem HH, King Soon WP, editors, ICPER 2020 - Proceedings of the 7th International Conference on Production, Energy and Reliability. Springer Science and Business Media Deutschland GmbH. 2023. p. 147-160. (Lecture Notes in Mechanical Engineering). doi: 10.1007/978-981-19-1939-8_13

Experimental Investigation of Puffing/Microexplosion in Fuel Droplets and Effects of Injection Modes on It

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus subject areas

Access to Document

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Cite this