C223 温度勾配中を伝播する爆風に関する研究

概要

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It is important to investigate large-scale explosion caused by unexpected disaster for safety reasons. Some experimental and numerical research has been carried out on the features of blast wave generated in large-scale explosions by other laboratories around the world. Blast waves in reality are influenced by atmospheric conditions such as geographical features, temperature, wind and so on. However there are few studies regarding such effects. In order to verify these, Shock Wave Research Center started joint research with National Space Development Agency of Japan (NASDA). This paper reports the results of blast wave propagation process through temperature gradient visualized using double exposure holographic interferometry and numerical simulation with gravity source term. These preliminary results indicated that the blast wave attenuates in the pressure of temperature gradient. Efforts are currently underway to improve the spatial resolution in the optical setup used in the experiments.
日本流体力学会の論文
2002-07-23