subject:(Ignition device)

Texas State University – San Marcos

1. Terranova, Victoria A. Assessing the Effects of the Ignition-Interlock Device on Recidivism.

Degree: PhD, Criminal Justice, 2016, Texas State University – San Marcos

URL: https://digital.library.txstate.edu/handle/10877/6842

► In 2012, there were 10,322 traffic fatalities in the U.S. involving at least one driver with a blood-alcohol concentration (BAC) of .08 or higher. This… (more)

Subjects/Keywords: Driving While Intoxicated; Recidivism; Ignition-Interlock Device; Propensity Score Matching

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APA (6^th Edition):

Terranova, V. A. (2016). Assessing the Effects of the Ignition-Interlock Device on Recidivism. (Doctoral Dissertation). Texas State University – San Marcos. Retrieved from https://digital.library.txstate.edu/handle/10877/6842

Chicago Manual of Style (16^th Edition):

Terranova, Victoria A. “Assessing the Effects of the Ignition-Interlock Device on Recidivism.” 2016. Doctoral Dissertation, Texas State University – San Marcos. Accessed January 22, 2021. https://digital.library.txstate.edu/handle/10877/6842.

MLA Handbook (7^th Edition):

Terranova, Victoria A. “Assessing the Effects of the Ignition-Interlock Device on Recidivism.” 2016. Web. 22 Jan 2021.

Vancouver:

Terranova VA. Assessing the Effects of the Ignition-Interlock Device on Recidivism. [Internet] [Doctoral dissertation]. Texas State University – San Marcos; 2016. [cited 2021 Jan 22]. Available from: https://digital.library.txstate.edu/handle/10877/6842.

Council of Science Editors:

Terranova VA. Assessing the Effects of the Ignition-Interlock Device on Recidivism. [Doctoral Dissertation]. Texas State University – San Marcos; 2016. Available from: https://digital.library.txstate.edu/handle/10877/6842

Texas A&M University

2. Han, Haitian. Hybrid Flammable Dust-Gas Cloud Ignition Using a Modified Standard Minimum Ignition Energy Device.

Degree: MS, Safety Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/173152

► Hybrid dust-gas explosion is a persistent problem in process industries because of its ease of ignition as well as serious consequences. Ease of ignition is… (more)

▼ Hybrid dust-gas explosion is a persistent problem in process industries because of its ease of ignition as well as serious consequences. Ease of ignition is quantified by minimum ignition energy (MIE), which is associated with the probability of ignition for a hybrid mixture. This study aims at improving the MIE measurement of hybrid dust-gas system using a modified Kühner MIKE3 MIE apparatus with an add-on purge device in order to purge the Hartmann tube with the gas mixture before the dust dispersion. It allows the gas composition in the Hartmann tube to be the same as that of the gas used for dispersing the dust. In this study, a typical hybrid system of Pittsburgh Pulverized Coal (PPC)- methane-air, was utilized to accomplish the tests, where two sizes of PPC with equivalent polydispersity was applied. Methane was pre-blended with ultra-high purity (UHP) air (21% oxygen and 79% nitrogen) at 1 vol %, 2 vol %, and 3 vol %. MIE testing was conducted for the following two cases: case (a) and case (b). Case (a) followed the ASTM E2019-03 standard procedure, while case (b) applied the pre-ignition Hartmann tube purge with 1 vol %, 2 vol %, and 3 vol % methane prior to dust dispersion and ignition. The testing was also divided into two sections: Section 1 including case (a1) and (b1) used the original dried PPC, while section 2 including case (a2) and (b2) used the milled PPC. Comparison of MIE values for both cases in both sections displayed significant differences. The hybrid MIE values obtained in case (b) are overall lower than those in case (a), illustrating that pre-ignition tube purge decreased the hybrid MIE value and gave more conservative MIE results. While smaller size of dust possessed lower hybrid MIE, similar trends in percent of MIE reduction revealed the impact of gas concentration on decrease of hybrid MIE regardless the particle size. Moreover, this study proves that previous hybrid MIE data generated using the ASTM E2019-03 standard procedure and utilizing the Hartmann apparatus and Kühner MIKE3 device yielded non-conservative results and should be validated through further studies by incorporating pre-ignition Hartmann tube purge into the hybrid MIE test procedure. Advisors/Committee Members: Mashuga, Chad V. (advisor), Cheng, Zhengdong (committee member), Petersen, Eric L. (committee member).

Subjects/Keywords: Minimum Ignition Energy; Dust Explosion; Hybrid Explosion; Modified Kühner MIKE3 MIE device

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APA (6^th Edition):

Han, H. (2017). Hybrid Flammable Dust-Gas Cloud Ignition Using a Modified Standard Minimum Ignition Energy Device. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173152

Chicago Manual of Style (16^th Edition):

Han, Haitian. “Hybrid Flammable Dust-Gas Cloud Ignition Using a Modified Standard Minimum Ignition Energy Device.” 2017. Masters Thesis, Texas A&M University. Accessed January 22, 2021. http://hdl.handle.net/1969.1/173152.

MLA Handbook (7^th Edition):

Han, Haitian. “Hybrid Flammable Dust-Gas Cloud Ignition Using a Modified Standard Minimum Ignition Energy Device.” 2017. Web. 22 Jan 2021.

Vancouver:

Han H. Hybrid Flammable Dust-Gas Cloud Ignition Using a Modified Standard Minimum Ignition Energy Device. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1969.1/173152.

Council of Science Editors:

Han H. Hybrid Flammable Dust-Gas Cloud Ignition Using a Modified Standard Minimum Ignition Energy Device. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/173152

University of Illinois – Urbana-Champaign

3. Motily, Austen. Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays.

Degree: MS, Mechanical Engineering, 2020, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/107927

► Among the range of commercially feasible propulsion systems, compression ignition (CI) engines present many advantages for light-duty vehicle operation. In particular, CI engines remain an… (more)

▼ Among the range of commercially feasible propulsion systems, compression ignition (CI) engines present many advantages for light-duty vehicle operation. In particular, CI engines remain an optimal choice for unmanned aerial vehicles (UAVs) designed to operate at moderate flight speeds. However, one of the primary limitations of CI engines is that they require well-characterized, highly-reactive diesel fuel to operate properly. As the United States Department of Defense implements the single fuel concept and with global efforts to develop alternatively derived fuels, it is paramount that modern CI engines have the capability to perform with a diverse variety of fuel types. At its core, this challenge can be framed as an ignition problem, where low reactivity fuels and extreme operating conditions result in long ignition delays, engine misfires, and power loss. It is for this reason that novel ignition devices be developed to support reliable CI engine operation. Hot surface energy addition devices are a promising technology to improve ignition behavior, but the mechanisms by which the heating element supports the ignition process are not well understood. This study evaluates the performance and limitations of commercial off-the-shelf (COTS) heating elements in functioning as continuous-use ignition devices for kerosene-fueled CI engines. Furthermore, it examines the interaction between a single high-pressure fuel spray with a hot surface device in order to identify the most important parameters for optimizing ignition behavior. Results of these experiments demonstrate that existing heating elements can accelerate the ignition process for fuels with a wide range of reactivities, assuming a sufficient surface temperature can be achieved. Reaching these temperatures in an engine environment and maintaining these temperatures for long periods of operation, with acceptable heating element durability, will be the primary challenges in developing next-generation ignition systems. Advisors/Committee Members: Lee, Tonghun (advisor).

Subjects/Keywords: Hot surface ignition; Rapid compression machine; Fuel spray ignition; Energy assisted ignition; High-pressure fuel spray; Ignition modes; Ignition device; Fuel spray heat release; Low-reactivity fuels; High-speed chemiluminescence imaging

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Motily, A. (2020). Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/107927

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Motily, Austen. “Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays.” 2020. Thesis, University of Illinois – Urbana-Champaign. Accessed January 22, 2021. http://hdl.handle.net/2142/107927.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Motily, Austen. “Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays.” 2020. Web. 22 Jan 2021.

Vancouver:

Motily A. Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2020. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/2142/107927.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Motily A. Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays. [Thesis]. University of Illinois – Urbana-Champaign; 2020. Available from: http://hdl.handle.net/2142/107927

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

4. Linassier, Guillaume. Étude expérimentale et numérique de l’allumage des turboréacteurs en conditions de haute altitude : Experimental and numerical study of aircraft engine ignition in high altitude conditions.

Degree: Docteur es, Énergétique et transferts, 2012, Toulouse, ISAE

URL: http://www.theses.fr/2012ESAE0013

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Le développement et la certification de systèmes propulsifs aéronautiques nécessitent une phase d'essais sur banc moteur. Ces essais permettent entre autres de caractériser les limites… (more)

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Le développement et la certification de systèmes propulsifs aéronautiques nécessitent une phase d'essais sur banc moteur. Ces essais permettent entre autres de caractériser les limites d'allumage des foyers de combustion de turbomachines, mais sont extrêmement coûteux et générateurs de délais pour l'industriel. Afin de limiter leur recours, il est nécessaire de développer des méthodes permettant de prévoir de la façon la plus fiable possible les performances d'allumage d'un prototype de chambre de combustion, et ce aussi bien pour des conditions de décollage au niveau de la mer que pour le cas critique de la haute altitude.L'objectif de cette thèse est de contribuer au développement et à la validation d’outils numériques pour la prévision de l'allumage des foyers de combustion à partir de données expérimentales obtenues sur le banc MERCATO de l’ONERA. Ces travaux ont été conduits en étroite coopération avec TURBOMECA. Des améliorations ont été apportées à un modèle permettant de simuler l'allumage d'un brouillard de carburant suite à un dépôt d'énergie par bougie à arc électrique. Ce modèle a été couplé à un code de calcul multiphysique (code CEDRE) afin d'établir des cartographies d'allumage à partir d'un champ aérodiphasique moyenné, mais également de simuler la phase de propagation de la flamme à l’ensemble du foyer par approche RANS pseudo-stationnaire. Afin de valider ces deux approches, une caractérisation expérimentale d'une maquette de chambre mono-secteur a été réalisée sur le banc d'essai MERCATO. Ces essais ont permis de constituer une banque de données très fournie pour différents cas tests. La comparaison de la cartographie d’allumage expérimentale à celle fournie par la simulation numérique donne des résultats très satisfaisants et encourageants en vue d’une application à un foyer réel de turbomachine. En parallèle, des résultats très prometteurs ont été obtenus sur une nouvelle maquette de chambre de combustion trisecteur,dérivée d'un foyer industriel, permettant de comparer ses limites d’allumage à celles obtenues sur la chambre réelle. Cette configuration fera l’objet par la suite d’une étude détaillée de la propagation de la flamme intersecteurs, impossible à réaliser sur la géométrie d'un foyer annulaire complet.

Design of aircraft engines requires tests on engine benches. These tests allow characterizing combustor ignition limits, but are extremely expensive and time consuming. In order to limit their number, it is necessary to develop alternative methods enabling to predict the ignition performances of a combustor prototype, for both ground conditions and high altitude conditions, the latter being particularly critical.The purpose of this thesis is to contribute to the development and validation of numerical tools enabling to predict ignition performances of combustor. Validation will be possible using an experimental data base obtained on the MERCATO test bench, at ONERA. This work results from a close cooperation with TURBOMECA. A numerical model, previously developed to predict the ignition…

Advisors/Committee Members: Lavergne, Gérard (thesis director), Lederlin, Thomas (thesis director).

Subjects/Keywords: Turbomachines; Allumage; Bougie électrique; Ecoulement diphasique; Combustion; Haute altitude; Gas turbine; Ignition; Spark device; Two-phase flow; Combustion; High altitude; 530

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Linassier, G. (2012). Étude expérimentale et numérique de l’allumage des turboréacteurs en conditions de haute altitude : Experimental and numerical study of aircraft engine ignition in high altitude conditions. (Doctoral Dissertation). Toulouse, ISAE. Retrieved from http://www.theses.fr/2012ESAE0013

Chicago Manual of Style (16^th Edition):

Linassier, Guillaume. “Étude expérimentale et numérique de l’allumage des turboréacteurs en conditions de haute altitude : Experimental and numerical study of aircraft engine ignition in high altitude conditions.” 2012. Doctoral Dissertation, Toulouse, ISAE. Accessed January 22, 2021. http://www.theses.fr/2012ESAE0013.

MLA Handbook (7^th Edition):

Linassier, Guillaume. “Étude expérimentale et numérique de l’allumage des turboréacteurs en conditions de haute altitude : Experimental and numerical study of aircraft engine ignition in high altitude conditions.” 2012. Web. 22 Jan 2021.

Vancouver:

Linassier G. Étude expérimentale et numérique de l’allumage des turboréacteurs en conditions de haute altitude : Experimental and numerical study of aircraft engine ignition in high altitude conditions. [Internet] [Doctoral dissertation]. Toulouse, ISAE; 2012. [cited 2021 Jan 22]. Available from: http://www.theses.fr/2012ESAE0013.

Council of Science Editors:

Linassier G. Étude expérimentale et numérique de l’allumage des turboréacteurs en conditions de haute altitude : Experimental and numerical study of aircraft engine ignition in high altitude conditions. [Doctoral Dissertation]. Toulouse, ISAE; 2012. Available from: http://www.theses.fr/2012ESAE0013

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