|Table of Contents|

Numerical Simulation of Experimental Pressure-apparent Burning Rate Model of Propellants in Closed Bomb

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2010年02期
Page:
262-265
Research Field:
Publishing date:

Info

Title:
Numerical Simulation of Experimental Pressure-apparent Burning Rate Model of Propellants in Closed Bomb
Author(s):
XIAO Zheng-gangYING San-jiuXU Fu-ming
School of Chemical Engineering,NUST,Nanjing 210094,China
Keywords:
propellants closed bombs burning rate models apparent burning rates geometric function models
PACS:
TQ562
DOI:
-
Abstract:
An experimental pressure-apparent burning rate model is established based on the recorded pressure-time data in the closed bomb and using no-shape function method to study the actual burning gas generation rule of propellants.As distinct from the traditional geometric function model,the new model introduces the concept of relative pressure impulse.The apparent burning rate is expressed by the burning gas generate volume vs.relative pressure impulse curve.Based on the recorded experimental pressure time data of three kinds of propellants,such as 12/1,13/7 and 13/19 single-base propellants,the numerical calculation is carried out using the computer program of the new model.The numerical calculation results are different from those of the traditional geometric function method.The new experimental pressure-apparent burning rate model is more suitable for the actual combustion circumstances of propellants in the closed bomb,for which is ultimately independent of the various grain sizes and has taken account of the influence of chamber pressure on the actual burning rate.

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Last Update: 2010-04-30