Effects of Pressure on Unstretched Laminar Burning Velocity, Markstein Length and Cellularity of Propagating Spherical Laminar Flames Toshiaki KITAGAW

Similar documents
) [9] DNS DNS Westbrook and Dryer[10] ( ) [11] DNS Markstein Markstein Markstein Markstein Markstein [12,13] Markstein Markstein Marks

JSME-JT

: u i = (2) x i Smagorinsky τ ij τ [3] ij u i u j u i u j = 2ν SGS S ij, (3) ν SGS = (C s ) 2 S (4) x i a u i ρ p P T u ν τ ij S c ν SGS S csgs

A Numerical Study on Early Stage of Flame Kernel Development in Spark Ignition Process for Methane/Air Combustible Mixtures Shinji NAKAYA*6, Kazuo HAT

原著_十河.indd

研究成果報告書

第６２巻　第１号　平成２４年４月／石こうを用いた木材ペレット

J. Jpn. Inst. Light Met. 65(6): (2015)

Fig. 1 Experimental apparatus.


Natural Convection Heat Transfer in a Horizontal Porous Enclosure with High Porosity Yasuaki SHIINA*4, Kota ISHIKAWA and Makoto HISHIDA Nuclear Applie

Table 1 Properties of parent coals used Ebenezer, Massel Buluck ; Australia, Datong; China Table 2 Properties of Various chars CY char: Captured char

Instability of Aerostatic Journal Bearings with Porous Floating Bush at High Speeds Masaaki MIYATAKE *4, Shigeka YOSHIMOTO, Tomoaki CHIBA and Akira CH

Optical Lenses CCD Camera Laser Sheet Wind Turbine with med Diffuser Pitot Tube PC Fig.1 Experimental facility. Transparent Diffuser Double Pulsed Nd:

A Study of Effective Application of CG Multimedia Contents for Help of Understandings of the Working Principles of the Internal Combustion Engine (The

Rate of Oxidation of Liquid Iron by Pure Oxygen Shiro BAN-YA and Jae-Dong SHIM Synopsis: The rate of oxidation of liquid iron by oxygen gas has been s

A Study on Throw Simulation for Baseball Pitching Machine with Rollers and Its Optimization Shinobu SAKAI*5, Yuichiro KITAGAWA, Ryo KANAI and Juhachi

teionkogaku43_527

Journal of the Combustion Society of Japan Vol.56 No.178 (2014) FEATURE /Issues and Solutions for Engine Combustion φ-t マッ

燃焼シンポジウム論文募集

渡辺(2309)_渡辺(2309)

Fig. 2 Effect of oxygen partial pressure on interfacial tensions between molten copper and fayalite slag (Fe/Si0 2=1.23) at 1473 K. Fig. s Effect or o

Fundamental Study on the SOX Gas Sensor Utilizing Beta-Alumina with Sputtered Praseodymium Oxide Thin Films by Shinya YAO1*, Kenji MIYAGAWA1, Shigeru

Study on Application of the cos a Method to Neutron Stress Measurement Toshihiko SASAKI*3 and Yukio HIROSE Department of Materials Science and Enginee

Study on Throw Accuracy for Baseball Pitching Machine with Roller (Study of Seam of Ball and Roller) Shinobu SAKAI*5, Juhachi ODA, Kengo KAWATA and Yu

Fig. 1. Relation between fatigue crack propagation rate and stress intensity factor range. Fig. 2. Effect of stress ratio on fatigue crack opening rat

J. Soc. Cosmet. Chem. Jpn. 7-chome, Edogawa-ku, Tokyo 132, Japan 2.1 J. Soc. Cosmet. Chem. Japan. Vol. 31, No

(Shigen to Sozai) Vol.116 p (2000) 石炭灰フライアッシュからのゼオライトのアルカリ水熱合成と生成物の陽イオン交換特性 * 1 1 村山憲弘山川洋亮 2 3 小川和男芝田隼次 Alkali Hydrothermal Synthesis of Zeol

Effect of Radiation on a Spray Jet Flame Ryoichi KUROSE and Satoru KOMORI Engineering Research Laboratory, Central Research Institute of Electric Powe

(a) -4furne.ce Fig. I Schematic drawing of cooling chamber Fig. 2 Priventive gas velocity at nozzle 405

Study of the "Vortex of Naruto" through multilevel remote sensing. Abstract Hydrodynamic characteristics of the "Vortex of Naruto" were investigated b


電子部品はんだ接合部の熱疲労寿命解析

Journal of the Combustion Society of Japan Vol.56 No.177 (2014) ORIGINAL PAPER SI エンジンのクレビスノックの容器実験による基礎研究 ( クレビス内混合気の自己着火

Journal of the Combustion Society of Japan Vol.58 No.185 (2016) ORIGINAL PAPER 火災旋風近傍の流れに関する研究 Flow Around a Fire Whirl *

** Department of Materials Science and Engineering, University of California, Los Angeles, CA 90025, USA) Preparation of Magnetopulmbite Type Ferrite

2 251 Barrera, 1986; Barrera, e.g., Gottlieb, 1985 Wethington & Kessler 1986 r Cohen & Wills,

IHIMU Energy-Saving Principle of the IHIMU Semicircular Duct and Its Application to the Flow Field Around Full Scale Ships IHI GHG IHIMU CFD PIV IHI M

The Effect of the Circumferential Temperature Change on the Change in the Strain Energy of Carbon Steel during the Rotatory Bending Fatigue Test by Ch

untitled

„´™Ÿ/’£flö

三校永谷.indd

食品工学.indb

Fig. 1 Hydrostatic Thrust Bearing Fig. 2 Point loading of elastic half-space

Viscosity of Ternary CaO-SiO2-Mx (F, O)y and CaO-Al2O3-Fe2O3 Melts Toshikazu YASUKOUCHI, Kunihiko NAKASHIMA and Katsumi MORI Synopsis : Effects of add

perature was about 2.5 Ž higher than that of the control irrespective of wind speed. With increasing wind speeds of more than 1m/s, the leaf temperatu

プラズマ核融合学会誌１１月【８１‐１１】／小特集５

Field Observations of Aeolian Sand Transport Rate Using a Piezoelectric Ceramic Sensor This study conducted field observations in terms of the number

248 Nippon Shokuhin Kagaku Kogaku Kaishi Vol. /-, No./,,.2,/. (,**0) 12 * * * Microencapsulation of Glutamine with Zein by a Solvent Evaporation Metho

Microsoft Word - 15.宮崎貴紀子

5D1 SY0004/14/ SICE 1, 2 Dynamically Consistent Motion Design of Humanoid Robots even at the Limit of Kinematics Kenya TANAKA 1 and Tomo

J. Jpn. Soc. Soil Phys. No. 126, p (2014) ECH 2 O 1 2 Calibration of the capacitance type of ECH 2 O soil moisture sensors Shoichi MITSUISHI 1 a

The Eevaluation One Bottle Type Silane Coupling Agents Masahiro Aida, Hideo Kanaya, Taira Kobayashi, Keiji Utsugizaki, Yoshizumi Murata, Tohru Hayakaw

<32322D8EA D89CD8D8797B294C E8A968388DF814589C193A1899B E5290EC8F438EA12D966B8A4393B98F5C8F9F926E95FB82CC8BC7926E F5

LAGUNA LAGUNA 10 p Water quality of Lake Kamo, Sado Island, northeast Japan, Katsuaki Kanzo 1, Ni

Experimental and Clinical Studies of Pregnant Hypertension Takashi SHIMAZU Department of Obstetrics and Gynecology, Osaka City University Medical Scho

Vol. No. Honda, et al.,

Vol. 51 No (2000) Thermo-Physiological Responses of the Foot under C Thermal Conditions Fusako IWASAKI, Yuri NANAMEKI,* Tomoko KOSHIB

( ) 2. ( ) 1. 1, kg CO2 1 2,000 kg 1 CO2 19 % 2,000 2, CO2 (NEDO) (COURSE50) 2008 COURSE50 CO2 CO2 10 % 20 %

Fig. 4. Configuration of fatigue test specimen. Table I. Mechanical property of test materials. Table II. Full scale fatigue test conditions and test

X線分析の進歩36 別刷

;HgS 1998 ;Fe2O kg ; kg 1 Minami et al., S 33 S 34 S 36 S % 0.75% 4.21% S 34 S 34 S Ish

A Navigation Algorithm for Avoidance of Moving and Stationary Obstacles for Mobile Robot Masaaki TOMITA*3 and Motoji YAMAMOTO Department of Production


04-“²†XŒØ‘�“_-6.01

The Japanese Journal of Psychology 1974, Vol. 44, No. 6, AN ANALYSIS OF WORD ATTRIBUTES IMAGERY, CONCRETENESS, MEANINGFULNESS AND EASE OF LEAR

GIS GIS m 2m 5m 1 1 2,3,5 6 7,8 9, y = a 1 x + a 1 a 1 a y x 85ha 2m2mha 52m 2m GIS ArcView

Flow Around a Circular Cylinder with Tangential Blowing near a Plane Boundary (2nd Report, A Study on Unsteady Characteristics) Shimpei OKAYASU, Kotar

HAJIMENI_56803.pdf

9 Nippon Shokuhin Kagaku Kogaku Kaishi Vol. /,, No.0,,/+,/0 (,**/) 251 * * E#ects of Microbial Transglutaminase on Melting Point and Gel property of G

IEEE HDD RAID MPI MPU/CPU GPGPU GPU cm I m cm /g I I n/ cm 2 s X n/ cm s cm g/cm

放水の物理的火災抑制効果に着目した地域住民の消火活動モデル

Field Measurement of Aeolian Sand Flux over a Sand Dune Slope Junaidi Keiko UDO, Shota MITSUSHIO, JUNAIDI, Shin-ichi AOKI, Shigeru KATO and Akira MANO

特-7.indd

Fig. 1 Flow diagram of experimental apparatus employed Fig. 2 Porosity change during sulfurization of reduced sample pellets


A Nutritional Study of Anemia in Pregnancy Hematologic Characteristics in Pregnancy (Part 1) Keizo Shiraki, Fumiko Hisaoka Department of Nutrition, Sc

01津行篤士ほか.indd

Table 1. St-VAc blockcopolymers Table 2. Stability of dispersion of blockcopolymers in unsaturated polyester

untitled

The Japanese Journal of Psychology 1990, Vol. 61, No. 3, The effects of a recipient's openness and conveyance to a third party of the self-dis

Table 1. Reluctance equalization design. Fig. 2. Voltage vector of LSynRM. Fig. 4. Analytical model. Table 2. Specifications of analytical models. Fig

Fig. 2 Signal plane divided into cell of DWT Fig. 1 Schematic diagram for the monitoring system

Synthesis and Development of Electric Active Stabilizer Suspension System Shuuichi BUMA*6, Yasuhiro OOKUMA, Akiya TANEDA, Katsumi SUZUKI, Jae-Sung CHO

TM

Microsoft Excelを用いた分子軌道の描画の実習

Table 2 DENSO Port Injection Fuel Injectors Fig.1 Port Fuel Injection System and Module 1996 CO ポート噴射システム 1 ( 1) HC 2 UC [2] (

a) Extraction of Similarities and Differences in Human Behavior Using Singular Value Decomposition Kenichi MISHIMA, Sayaka KANATA, Hiroaki NAKANISHI a

1

燃焼圧センサ

藤村氏(論文1).indd

A03-2.dvi

Perrett et al.,,,, Fig.,, E I, 76

Degradation Mechanism of Ethylene-propylene-diene Terpolymer by Ozone in Aqueous Solution Satoshi MIWA 1 *, 2, Takako KIKUCHI 1, 2, Yoshito OHTAKE 1 a

Reaction Mechanism and Liquefaction Process of Coal Yosuke MAEKAWA

Table 1 Experimental conditions Fig. 1 Belt sanded surface model Table 2 Factor loadings of final varimax criterion 5 6

第七回道路橋床版シンポジウム論文報告集 Experimental Study on Fatigue Resistance of RC Slab with UFC Panel for Wheel Running Fatique Test * ** ** *** **** Kazuhiko Minaku

０９００９０６，繊維学会ファイバ８月号／報文－０１－高橋

LAGUNA LAGUNA 8 p Saline wedge at River Gonokawa, Shimane Pref., Japan Saline water intrusion at estuary r


Transcription:

Effects of Pressure on Unstretched Laminar Burning Velocity, Markstein Length and Cellularity of Propagating Spherical Laminar Flames Toshiaki KITAGAWA*5, Yoshitaka TOGAMI, Kouji HARADA and Tomomi OGAWA Department of Mechanical Engineering Science, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka-shi, Fukuoka, 812-8581 Japan Outwardly propagating spherical laminar flames in the constant volume bomb were studied. Markstein length was employed to quantify the effects of the flame stretch on the burning velocity. The effects of the pressure on the unstretched laminar burning velocity and the Markstein length were investigated using methane and propane-air mixtures at the equivalence ratios from 0.8 to 1.4 varying the initial pressure from 0.10 to 0.50 MPa. The Markstein length increased for the methane mixture and decreased for the propane mixture with increasing the equivalence ratio. The Markstein length decreased with increasing the initial pressure at all the equivalence ratios irrespective of fuel. It was negative for the lean methane and the rich propane mixtures at high pressures. Flame was unstable and covered with cells in such cases. Key Words: Premixed Combustion, Combustion Phenomena, Burning Velocity, Flame Stretch, Effect of Pressure, Unstretched Laminar Burning Velocity, Markstein Length, Flame Instability, Cellular Flame E-mail:toshi@mech.kyushu u.ac.jp

Fig. 1 Schematic figure of combustion chamber

(a) Methane-air mixture (a) Methane-air mixture Fig. 4 Unstretched laminar burning velocity, u, Fig. 5 Markstein length, L

(a) Methane-air mixture (a) Methane-air mixture Fig. 6 Pressure dependency of unstretched laminar burning velocity, u, Fig. 7 Pressure indices, n for unstretched laminar burning velocities, u,

(a) Methane-air mixture Fig. 8 Markstein number, Ma Fig. 9 Pressure histories at 0.50MPa

Fig. 10 Schlieren images of spherically propagating flames, Propane-air mixture

(5) Qin, X Kobayashi, H. and Niioka, T, Laminar Burring Velocity of Hydrogen Air Premixed Flames at Elevated Pressze, Experimental Thermal and Fluid Science, 21, (2000), 58-63. (6) Mattison, M, On Flame Stretch, Combustion Science and Tednology, 31, (1983), 169-181. (7) Tien, JR. and Matalon, M., On the Buming velocity of Stretched Flame, Combustion Science and Technology, 84, (1991), 238-248. (8) Law,CK, Dynanics of Stretched Flames, Proc. Combustion Institute, 22, (1988), 1381-1402. (9) Searby, G. and Quinard, J, Direct and Indirect Measurements of Markstein Numbers of Premixed Flames, Combustion and Flame, 82, (1990), 298-311. (10) Kwon, S., Tseng, L.-K. and Faeth, GM, Laminar Burning Velocities and Transitions to Unstable Flames in H2/O2/N2 and C3H8/O2/N2 Mixtures, Combustion and Flame, 90, (1992), 230-246. (11) Clavin, P, Dynamic Behavior of Premixed Flame Frorts in Laminar and Turbulert Flows, Progress in Energy and Combustion Science, 11, (1985), 1-59. (1) Andrews, G.E. and Bradley, D., The Burning Velocity of Methane-Air Mixtures, Combustion and Flam 19, (1972), 275-288. (2) Metghalchi, M. and Keck J.C., Laminar Burning Velocity of Propane-Air Mixtures at High Temperature and Pressure Combustion and Flame, 38, (1980), 143-154. (3) Iijima, T. and Takeno, T., Effects of Tempetature and Pressure on Burning Velocity, Combustion and Flame, 65, (1986), 3543. (4) Hill, P.G. and Hung J., Laminar Burning Velocities of Stoicliometric Mixtures of Methane with Propane and Ethane Additives, Combustion Science and Technology, 60, (1988), 7-30. (13) Bradley, D., GasIcll, P.H. and Gu, XJ, Burning Velocities, Maticstein Lengths, and Flame Quenching fa Sphencal Methane-Air Flames: A Computational Study, Combustion and Flame, 104, (1996),176-198. (14) Betchtold, JK and Matalon, M, The Dependence of the Maticstein Length on Stoichiometry, Combustion and Flame, 127, (2001),1906-1913. (15) Davis, SQ., Quinard, J. and Searby, G., Maticstein Numbers in Countetilow, Methane- and Propane- Air Flames: A Computational Study, Combustion and Flame, 130, (2002),123-136. (16) Btadley, D, Hicks, RA, Lawes, M, Sheppard, C.G.W, Woolley, R, The Measurement of Laminar Brining Velocities and Maikstein Numbers for Iso-octane-Air and Iso-octane-n-Heptane-Air Mixtures at Elevated Tempatures and Pressures in an Explosion Bomb, Combustion and Flame, 115, (1998), 126-144. (17) Gu, XJ., Hag, MZ, Lawes, M, Woolley, R, Laminar Burning Velocity and Markstein Lengths of Methane-Air Mixtures, Combusticn and Flame, 121, (2000), 41-58. (19) Hassan, M.I., Aung, KT. and Faeth, GM, Measured and Predicted Properties of Laminar Premixed Methane/Air Flames at Various Pressuns, Combustion and Flame, 115, (1998), 539-550. (20) Kwon, O.C. and Faeth, GM, Flame/Stretch Interactions of Premixed Hydrogen-Fueled Flames: Measurements and Predictions, Combustion and Flame, 124, (2001), 590-610. (21) Miller, U.C., Bollig, M. and Petas, N., Approximations for Bunting Velocities and Markstein Numbers for Lean Hydrocarbon and Methanol Flames, Combustion and Flame, 108, (1997), 349-356. (22) Sun, CJ., Sung, CJ, He, L and Law, C.K., Dynamics of Weakly Stretched Flames: Quantitative Description and Extraction of Glcbal Flame Parameters, Combustion and Flame, 118, (1999),108-128. (23) Bradley,D., Hag, M.Z, Hidcs, RA, Kitagawa, T., Lawes, M., Sheppard, C.G.W. and Woolly, R, Turbulent Burring Velocity, Bumed Gas Distribution, and Associated Flame Surface Defirrition, Combustion and Flame, 133, (2003), 415430. (24) Lewis, B. and von Elbe, G., Combustion, Flames and Explcdons of Gases (3rd ed), Academic Press Inc, Orlando, 1987, p. 388. (25) Kee, RJ., Rupley, FM, Miller, JA., Coltrin, ME, et al, CI-IEMKIN Collection, Release 3.6, Reaction Design, Inc., San Diego, CA (2000). (26) http://www.me.berkeley.edu/gri_mech/ (27) Sung, CJ., Li, B, Law, C.K. and Wang, H., Structure and Sooting Limits in Cairterflow Methane/Air Propane/Air Diffusion Flames fiom 1 to 5 Atmospheres, Proc. Combustion Institute, 27, (1998), 1523-1529. (29) Bradley, D. and Hama, CM, The Development of Instabilities in Laminar Explosion Flames, Combustion and Flame, 99, (1994), 562-572. (30) Bradley, D., Sheppard, C.G.W., Woolley. R, Greenhalgh, D.A. and Lockett, RD, The Development and Strodure of Flame Instabilities and Cellularity at Low Maikstein Numbers in Explosions, Combustion and Flam 122, (2000) 195-209. (31) Groff E.G., The Cellular Nature of Confined Sphaical Propane-Air Flames, Combustion and Flame, 48, (1982), 51-62. (32) Betchtold, JK. and Malalon, M., Hydrodynamic and Diffusion Effects on the Stability of Spherically Expanding Flames, Combustion and Flame, 67, (1987), 77-90.

2024 © docsplayer.net プライバシー | 利用規約 | フィードバック