Inverse Estimation of Time-varied Heat Flux and Temperature on 2-D GunBarrel using Input Estimation Method with Finite-element Scheme

Defence Science Journal

Tsung-Chien Chen¹  Chiun-Chien Liu² 

[1] National Defense University, Tao-Yuan;National Defense University, Tao Yuan

关键词: Heat flux;    input-estimation method;    Finite element scheme;    Inverse heat conduction;    Inverseestimation;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

When a gun fires, a large amount of heat flux is triggered by the propellant gas acting onthe gun barrel inner wall, leading to the rise of temperature, which will cause serious destruction.In this paper, an inverse method based on the input-estimation method including the finiteinverse heat conduction problem (IHCP) element scheme to inverse estimate the unknown heatflux on the 2-D gun barrel has been presented. The use of the online accuracy to inverselyestimate the unknown heat flux on the chamber has been made using 7.62 mm gun barrel outerwall temperature measurement data. Using simulation uniform and non-uniform heat flux q(z,t)cases involves a gun barrel inner wall that varies with time t and the axial z-location with convectionsituation in the outer surface. Computational results show that the proposed method exhibitsa good estimation performance and highly facilitates practical implementation. Defence Science Journal, 2008, 58(1), pp.57-76 , DOI:http://dx.doi.org/10.14429/dsj.58.1623

【 授权许可】

Unknown