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One dimensional numerical calculation for influence of aluminum concentration on multiphase detonation of suspende gasoline/nano-aluminum-powder liquid drops(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2011年05期
Page:
47-51
Research Field:
燃料与推进剂
Publishing date:

Info

Title:
One dimensional numerical calculation for influence of aluminum concentration on multiphase detonation of suspende gasoline/nano-aluminum-powder liquid drops
Author(s):
HU Hong-bo;  WENG Chun-sheng
National Key Lab of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
Keywords:
detonation;  multiphase flow;  nano-aluminum-powder;  CE/SE method;  numerical calculation
PACS:
V51-34
DOI:
-
Abstract:
Multiphase detonation process of suspended gasoline/nano-aluminum-powder liquid drops and air mixture in a circular tube is numerically simulated in this paper. The multi-fluid model with chemical reaction is used to treat the liquid, aluminum and the oxidizer under one dimension Euler coordinates. The conservation element and solution element (CE/SE) based on rectangular mesh method is applied to solving the controlled equations in which the source items are dealt with fourth-order Runge-Kutta method. The influence of aluminum concentration on detonation parameter and process of deflagration to detonation is discussed. The results of numerical calculation indicate that the velocity of detonation wave increases when nano-aluminum-powder is added; with the increasing of nano-aluminum-powder concentration, the peak pressure and plateau pressure of detonation wave increase with different increased rates; the DDT distance shortens at the beginning and then increases; and there is a shortest distance near the concentration of 1%.

References:

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