Numerical investigation of a movable wall response on a flame propagation

• Autorzy: Górniak A. , Kaźmierczak A.
• Języki publikacji: EN

Abstrakty

EN

This paper contains a description of a shock wave (called a flame when the deflagration is considered) propagation pattern impact on a motion of a barrier. Here, the numerical research was conducted on a model of a pyrotechnic actuator, hence, the piston is understood as a movable barrier. The processes occurring within the pyrotechnic actuators after ignition of a pyrotechnic propellants have been explained. The investigations are focused on the dependence of a shape of the actuator’s combustion chamber and the piston stroke time. It appears that the appropriate design of the combustion chamber can decrease the time required for a piston total stroke using this same type of a propellant. The visualization of the flame occurring due to ignition of the propellant is crucial for understanding the dependence between the construction of the actuators interior and the piston stroke time. Therefore, the approach of simulating numerically the flames aroused. The simulation was conducted on a full scale 3D model of a pyrotechnic actuator which is a detail representation of a real object on which the verification test will be conducted. However, only the flame propagation was considered here. The material of an actuators members was not investigated, hence the AUTODYN solver considered them as a single rigid bodies with its own mass and inertia.

Słowa kluczowe

EN

pyrotechnic actuators; shock wave; AUTODYN; flame propagation; pyrotechnic actuator

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 2
• Strony: 135--141
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Górniak A.

• Wroclaw University of Technology Department of Motor Vehicles and Combustion Engines Braci Gierymskich Street 164, 51-640 Wrocław tel.: [phone], fax [phone]

autor

Kaźmierczak A.

• Wroclaw University of Technology Department of Motor Vehicles and Combustion Engines Braci Gierymskich Street 164, 51-640 Wrocław tel.: [phone], fax [phone]

Bibliografia

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• [8] Gushanov, A. R., Dependence of the Shape of a Detonation Wave Front on the Detonation Wave Velocity upon Detonation of a Cylindrical Charge, Combustion, Explosion, and Shock Waves, Vol. 37, No. 1, pp. 113-118, 2001.
• [9] ANSYS, Inc. ANSYS AUTODYN User's Manual, Release 14.5 October 2012.
• [10] Introduction to ANSYS AUTODYN, Material models, Chapter 9, ANSYS, Inc.