摘要
本文在水平激波管中研究激波与堆积粉尘的相互作用 .利用带示踪粒子的X光脉冲摄影和阴影摄影 ,成功拍摄了反映激波作用后堆积粉尘内部波系结构的 X光照片和反映入射激波阵面和波后卷扬粉尘云形状的阴影照片 ,进而测得与流场结构有关的特征参数 .本文还对入射激波强度对流场的影响进行了实验和理论方面的研究 ,两者符合较好 .
Experiments on shock wave interacting with a loose ultrafine particle bed were conducted in a shock tube with square cross section 20×20mm 2 and 2m long.The flowfields both in gas and in granular phase induced by shock waves were recorded by means of shadow graphs and pulsed X ray shadow graphs respectively.In order to get a sharp X ray picture, trace particles mixed with test particles were employed to absorb X ray.Constitutive equations of the granular phase were obtained by analyzing the pictures taken from the experiments. The effects of the strength of incident shock wave on induced flowfields are observed and discussed. It is in good agreement with theoretical analysis.
出处
《实验力学》
CSCD
北大核心
2000年第4期416-420,共5页
Journal of Experimental Mechanics
基金
国家自然科学基金项目!(19772 0 18)
