An Inverse Analysis for Establishing the Temperature-Dependent Thermal Conductivity of a Melt-Cast Explosive across the Whole Solidification Process

Materials

Bo Yan¹  Lei Ni²  Xiufen Yang²  Lin Zhou²  Xiangrong Zhang² 

[1] Research Institute of Gansu Yinguang Chemical Industry Group, Baiyin 730900, China;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;

关键词: melt-cast explosives;    temperature-dependent thermal conductivity;    inverse heat-transfer problem;    Gauss–Newton algorithm;   

DOI  :  10.3390/ma15062077

来源: DOAJ

【 摘 要 】

Thermal conductivity is one of the most important thermophysical properties of a melt-cast explosive. However, the temperature-dependent thermal conductivity of such explosives cannot be easily measured across the whole solidification process (including the liquid, semi-solid, and solid states). This study used an inverse analysis method to estimate the temperature-dependent thermal conductivity of a 2,4-dinitroanisole/cyclotetramethylenetetranitramine (DNAN/HMX) melt-cast explosive in a continuous way. The method that was used is described here in detail, and it is verified by comparing the estimated thermal conductivity with a prespecified value using simulated measurement temperatures, thereby demonstrating its effectiveness. Combining this method with experimentally measured temperatures, the temperature-dependent thermal conductivity of the DNAN/HMX melt-cast explosive was obtained. Some measured thermal conductivity values for this explosive in the solid state were used for further validation.

【 授权许可】

Unknown