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Study and Numerical Simulation of Combustion Process of Base Bleed Projectile Ignition

Author: DaiWenCan
Tutor: LuXin
School: Nanjing University of Technology and Engineering
Course: Armament Launch Theory and Technology
Keywords: Bottom row of Pharmacy Ignition Numerical Analysis Interior ballistics Bottom row bombs
CLC: TJ413.7
Type: Master's thesis
Year: 2009
Downloads: 87
Quote: 0
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Abstract


To the exhaust shells at the bottom of the ignition combustion engineering background , half closed bomb simulation bottom row pop up the muzzle pressure dips , the bottom row pharmaceutical combustion flame instability extinguished and the resurgence of characteristics , focusing on observation . the igniter on the bottom row Pharmacy ignite performance . For the bottom row of the ignition characteristics of the grain in the bore , two simplified ignition model : one based on solid convective heat transfer of the main charge high-temperature gas -phase ignition model , and in the semi- infinite flat plate heat transfer model and constant boundary temperature simplified conditions , analytical solution ; ignition process is based on the the igniter gas - solid two-phase flow (liquid) and red-hot particles ignition model . The calculation results show that the model can reflect the ignition characteristics of the bottom row of grain . Bottom exhaust cavity ignition , combustion and gas flow of one-dimensional non - steady-state model and numerical simulation , the intraluminal pressure of the bottom row , the distribution of temperature characteristics . And as the bottom row of the pharmaceutical solid phase ignition ambient temperature using the bottom row of classic trajectory model as pharmaceutical solid phase ignition bottom row boundary conditions , to simulate the one-dimensional unsteady flow process , revealing the bottom row bore ignition behavior and characteristics . Research work on the the guide bottom exhaust design some reference value .

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CLC: > Industrial Technology > Arms industry > Ammunition, fuses, pyrotechnics > Ammunition > Shells : the use and construction of > Special bomb
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