[1]陈龙淼,钱林方.复合材料身管膛内气流与固壁传热分析[J].南京理工大学学报(自然科学版),2008,(03):327-332.
 CHEN Long-miao,QIAN Lin-fang.Heat Transfer Between Gas and Inner Surface of Composite Material Barrels[J].Journal of Nanjing University of Science and Technology,2008,(03):327-332.
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复合材料身管膛内气流与固壁传热分析
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2008年03期
页码:
327-332
栏目:
出版日期:
2008-06-30

文章信息/Info

Title:
Heat Transfer Between Gas and Inner Surface of Composite Material Barrels
作者:
陈龙淼;钱林方;
南京理工大学机械工程学院,江苏南京210094
Author(s):
CHEN Long-miaoQIAN Lin-fang
School of Mechanical Engineering,NUST,Nanjing 210094,China
关键词:
复合材料身管 内弹道 有限差分法 传热
Keywords:
composite material barrels interior ballistics finite difference heat transfer
分类号:
TJ303
摘要:
为了给复合材料身管传热分析提供较为精确的边界条件,采用一维内弹道膛内流场模型,将弹后空间核心流部分考虑为包含气流与身管管壁发生摩擦和热交换的不稳定准一维流,得到身管内侧不稳定、非定常可压缩流的边界层方程。基于MacCormack有限差分方法求解该方程,得到的内弹道特征量与经典内弹道模型计算结果的相对误差在3%以内,同时结果显示瞬时气流速度对换热系数影响较大,因此在对复合材料身管传热分析时需采用气流温度和换热系数瞬时计算结果。
Abstract:
To provide precise boundary condition for the composite tube heat transfer analysis,this paper adopts one-dimensional flow field model of interior ballistics in bore,and reckons the model of composite tube to be an unsteady quasi-one dimensional flow one,which includes the friction and heat transfer between gas and tube and radial heat conduction inside the tube.Then the unsteady compressible flow boundary layer equations in gun tube are established.Based on the equational solution by the MacCormack finite difference method,this paper indicates that the relative errors of the results from the simulation and the classics interior ballistics are within 3%.It shows that the speed of transient gas exerts greater impact on transfer coefficient,and the transient results from gas temperature and transfer coefficient should be employed when analyzing composite tube heat transfer.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:陈龙淼(1979-),男,湖南长沙人,讲师,博士,主要研究方向:复合材料热性能分析、机械结构强度与 动力学计算,E_mail:13913870745@e172.com。
更新日期/Last Update: 2008-06-30