Visualization and Image Analysis of Outflow of Combustion Products of Pyrotechnic Composition from the Model Gasgenerator

Authors: Yagodnikov D.A., Khomyakov I.I., Burkov A.S., Artyukhova O.A. Published: 29.05.2014
Published in issue: #3(96)/2014  


Category: Power-generating and Transport Machine Building  
Keywords: high-speed video shooting, pyrotechnics, torch, combustion products, digital image processing, optical pyrometry

Using the visualization, experimental studies of outflow of combustion products of solid pyrotechnic composition from a two-nozzle unit of the model gasgenerator are conducted. The methods are described: for calibrating the exposure degree (gray level) of the Videosprint matrix camcorder according to the brightness temperature of the tungsten filament of the standard lamp SI8-200; for pseudo-color coding of images; for configuring the color wedge taking into account the introduced calibration curve. The examples of pseudo-color processing of a frame of the outflowing stream of combustion products in the fire test and the temperature field with the highest values in the range 2400-2500 K are given. It is found that the use of high-speed digital video camera with a frequency of shooting of 500 frames/s resulted in registration of vortex structures on a border of the stream of combustion products, unlike video shooting by the Panasonic camera (a frequency of 25 frames/s), when a border of the submerged stream appears smooth.


[1] M.M. Mazur, V.N. Shorin, V.N. Zhogun, V.I. Pustovoyt, V.E. Pozhar, Yu.K. Kalinnikov, N.S. Kostin, L.I. Mazur, V.N. Toropov, D.V. Shorin. Akustoopticheskiy ramanovskiy spektrometr. V kn.: "Akustoopticheskie, akusticheskie i rentgenospektral’nye metody i sredstva izmereniy v nauke i tekhnike" [Acousto-optical Raman spectrometer. In book: "Acousto-optical, acoustic and X-ray methods and means of measurement in science and technology"], Moscow, VNIIFTRI Publ., 2005, pp. 16-26.

[2] Bobrov A.N., Yagodnikov D.A., Popov I.V. Ignition and combustion in two-component powder suspension in a gas. Combustion, explosion and shock waves, 1992, vol. 28, no. 2, pp. 155-158.

[3] Yagodnikov D.A., Voronetskiy A.V., Lapitskiy V.I. Flame propagation for aero-suspension of aluminum at low pressures Fizika goreniya i vzryva [Combustion, explosion and shock waves], 1995, vol. 31, no. 5, pp. 23-31 (in Russ.).

[4] Yagodnikov D.A., Voronetskii A.V. The Effect of Electric Field on Ignition and Combustion Processes of Combustible Cases, Dust and Liquids. Combustion, Explosion, Shock Waves, 1994, vol. 2, pp. 87-90.

[5] Teplinskiy M.V., Yagodnikov D.A. Digital processing and analysis of visualization results of fire tests of a model solid-fuel rocket engine. Vestn. Mosk. Gos. Tekh. Univ. im. N. E. Baumana, Mashinostr. [Herald of the Bauman Moscow State Tech. Univ., Mech. Eng.], 2005, no. 3, pp. 34-41 (in Russ.).

[6] Mal’tsev V.M., Mal’tsev M.I., Kashporov L.Ya. Osnovnye kharakteristiki goreniya [Basic characteristics of combustion]. Moscow, Khimiya Publ., 1977. 320 p.

[7] Kadyshevich A.E. Measuring the temperature of the flame. Moscow, Metallurgy Publ., 1961. 218 p.

[8] Yagodnikov D.A. Vosplamenenie i gorenie poroshkoobraznykh metallov [Ignition and combustion of powdered metals]. Moscow, MGTU im. N.E. Baumana Publ., 2009. 432 p.