1990 Fiscal Year Annual Research Report

高温化学反応を伴う衝撃波

Research Project

Project/Area Number	02252109
Research Institution	Nagoya University
Principal Investigator	藤原俊隆名古屋大学, 工学部, 教授 (90023225)
Co-Investigator(Kenkyū-buntansha)	佐宗章弘名古屋大学, 工学部, 助手 (40215752) 久保田弘敏東京大学, 工学部, 教授 (30114466) 斉藤昊広島大学, 理学部, 教授 (00033853) 松為宏幸東京大学, 工学部, 教授 (00026098)
Keywords	衝撃波 / 化学反応 / 非平衝 / デトネ-ション / ラジカル / 分子動力学 / レ-ザ-
Research Abstract	デトネ-ションの研究に関しては、(i)斜めデトネ-ションの安定性と周期的振動の機構解明、(ii)逆制動ふく射を伝播機構とするレ-ザ-・デトネ-ションの可能性が調ベられた。これらは簡単化された化学反応に基いて解析された為、実際の現象が推測に基く機構から物理化学的に生じるかどうか、解析の結果は定性的に納得のゆく結論へ導く。即ち斜めデトネ-ションの振動は、局所的な爆発と壁から反射する圧力波間の相互干渉による共鳴現象である。炭酸ガスレ-ザ-を、水素分子やアルゴンガス中に、一平方ミリ当り10メガワットの強度で集光すると、球面レ-ザ-・デトネ-ションが伝播しそうである。衝撃波後方において、アセトアルドキシム及びホルムアルドキシムを熱分解し、生成物の挙動を調べた。二段階の単分子反応が起こる場合に、一段階目の反応の非平衡遷移状態構造が、二段階目の反応経路の選択を支配すると言う考えと同様に、分子の異性化についても検討がなされた。実験と反応分子動力学的計算の双方から、この事は言えそうである。その他松為、藤井、山崎らは、多くのラジカル反応に関して、衝撃波後方の高温下における、高速連鎖反応存在下に、速度定数を良い精度で計測した。この手法により、この迄全くと言っても良い程に手のつけられなかったラジカル反応が解明され、燃焼現象の制御や公害汚染物質の抑制に役立つ研究が行われる可能性を与えている。

Research Products
(17 results)

All Other

All Publications (17 results)

[Publications] T.Fujiwara: "Propagation,Quenching and Galloping MultiーDimensional Gaseous Detonation" Proceedings of lstS SovietーJapan Symposium on Computational Fluid Dynamics. 1. 143-149 (1989)
[Publications] T.Fujiwara: "Oxyhydrogen Oblique Detonation Supported by TwoーDimensional Wedge" ISCFD(International Symposium on Computational Fluid Dynamics),Proceedings. 3. 623-628 (1989)
[Publications] T.Murayama: "Thermally and Chemically Nonequilibrium Hypersonic Flow in ThreeーDimensional Geometry" Proceedings of ISTS(International Syposium on Space Technology and Science). 17. 927-932 (1990)
[Publications] X.Chang: "Radiative Heat Transfer from Nonequilibrium Shock Layer in a Hypersonic Reentry Body" Proceedings of ISTS. 17. 921-926 (1990)
[Publications] M.Tsujioka: "A study on the Interaction between Laser Beam and Gas Flow" Proceedings of ISTS. 17. 401-406 (1990)
[Publications] A.Matsuo: "Detailed Numerical Analysis of Standing Oblique Detonation" Proceedings of ISTS. 17. 735-740 (1990)
[Publications] A.Sasoh: "Equilibrium and Nonequilibrium Radiation Heat Transfer over a Reentry Blunt Body" AIAA paper. NO.90-2113 (1990)
[Publications] T.Sugimura: "Cellular Detonation Instability and SubーStructure" Memoirs of the Faculty of Engineering,Nagoya University. 42. 170-184 (1990)
[Publications] T.Fujiwara: "Propagation Mechanism of ThreeーDimensional Detonation" Proceedings of ISCFD. 3. 531-536 (1989)
[Publications] M.Koshi: "Photodissociation of O_2 and CO_2 from Vibrationally Excited States at High Temperatures" Chem.Phys.Lett.176. 519-523 (1991)
[Publications] M.Yoshimura: "Measurement of the Rate Constant for the Reaction H+H_2S over a Wide Range of Temperature" Proceeding of Shock Waves,Japan'90. 1. 685-688 (1990)
[Publications] K.FuKuda: "Reactions of Acetylene with C_2H Radical at High Temperatures" Proceedings of Symposium on Shock Waves,Japan'90. 1. 689-692 (1990)
[Publications] K.Saito: "Unimolecular Thermal Reaction of Formaldoxime at High Temperatures:Experiments and Calculations" J.Phys.Chem.92. 4371-4374 (1988)
[Publications] K.Saito: "Investigations of the unimolecular behavior of Relatively Large Molecules:Shock Tube Experiments and Molecular Orbital Calculations" Proceedings of National Symposium on Shock Waves. 2. 65-78 (1989)
[Publications] K.Saito: "Obsevation of Nonequilibrium Chemical Reaction in Shock Waves" Proceedings of(National)Symposium on Shock Waves,Japan. 1. 669-672 (1990)
[Publications] H.Kubota: "Estimation of Sonic Boom Intensity by the Wavefrom Parameter Method" Proceedings of Symposium on Shock Waves,Japan'90. 1. 377-382 (1990)
[Publications] M.Fujita: "Flowfield over a Spiked Blunt Nose(II)" Proceedings of Syposium on Numerical Fluid Dymanics(National). 4. 181-184 (1990)

1990 Fiscal Year Annual Research Report

高温化学反応を伴う衝撃波

Principal Investigator

藤原 俊隆 名古屋大学, 工学部, 教授 (90023225)

Research Products

[Publications] T.Fujiwara: "Propagation,Quenching and Galloping MultiーDimensional Gaseous Detonation" Proceedings of lstS SovietーJapan Symposium on Computational Fluid Dynamics. 1. 143-149 (1989)

[Publications] T.Fujiwara: "Oxyhydrogen Oblique Detonation Supported by TwoーDimensional Wedge" ISCFD(International Symposium on Computational Fluid Dynamics),Proceedings. 3. 623-628 (1989)

[Publications] T.Murayama: "Thermally and Chemically Nonequilibrium Hypersonic Flow in ThreeーDimensional Geometry" Proceedings of ISTS(International Syposium on Space Technology and Science). 17. 927-932 (1990)

[Publications] X.Chang: "Radiative Heat Transfer from Nonequilibrium Shock Layer in a Hypersonic Reentry Body" Proceedings of ISTS. 17. 921-926 (1990)

[Publications] M.Tsujioka: "A study on the Interaction between Laser Beam and Gas Flow" Proceedings of ISTS. 17. 401-406 (1990)

[Publications] A.Matsuo: "Detailed Numerical Analysis of Standing Oblique Detonation" Proceedings of ISTS. 17. 735-740 (1990)

[Publications] A.Sasoh: "Equilibrium and Nonequilibrium Radiation Heat Transfer over a Reentry Blunt Body" AIAA paper. NO.90-2113 (1990)

[Publications] T.Sugimura: "Cellular Detonation Instability and SubーStructure" Memoirs of the Faculty of Engineering,Nagoya University. 42. 170-184 (1990)

[Publications] T.Fujiwara: "Propagation Mechanism of ThreeーDimensional Detonation" Proceedings of ISCFD. 3. 531-536 (1989)

[Publications] M.Koshi: "Photodissociation of O_2 and CO_2 from Vibrationally Excited States at High Temperatures" Chem.Phys.Lett.176. 519-523 (1991)

[Publications] M.Yoshimura: "Measurement of the Rate Constant for the Reaction H+H_2S over a Wide Range of Temperature" Proceeding of Shock Waves,Japan'90. 1. 685-688 (1990)

[Publications] K.FuKuda: "Reactions of Acetylene with C_2H Radical at High Temperatures" Proceedings of Symposium on Shock Waves,Japan'90. 1. 689-692 (1990)

[Publications] K.Saito: "Unimolecular Thermal Reaction of Formaldoxime at High Temperatures:Experiments and Calculations" J.Phys.Chem.92. 4371-4374 (1988)

[Publications] K.Saito: "Investigations of the unimolecular behavior of Relatively Large Molecules:Shock Tube Experiments and Molecular Orbital Calculations" Proceedings of National Symposium on Shock Waves. 2. 65-78 (1989)

[Publications] K.Saito: "Obsevation of Nonequilibrium Chemical Reaction in Shock Waves" Proceedings of(National)Symposium on Shock Waves,Japan. 1. 669-672 (1990)

[Publications] H.Kubota: "Estimation of Sonic Boom Intensity by the Wavefrom Parameter Method" Proceedings of Symposium on Shock Waves,Japan'90. 1. 377-382 (1990)

[Publications] M.Fujita: "Flowfield over a Spiked Blunt Nose(II)" Proceedings of Syposium on Numerical Fluid Dymanics(National). 4. 181-184 (1990)

藤原俊隆名古屋大学, 工学部, 教授 (90023225)