A comprehensive analytical model has been developed to describe the structure of dust detonatins which simultaneously computes both the ipduction and reaction zones. Heterogeneous reactions which occur on the external particle surface and on the surface of pores within the particle are used to model the chemistry. The overall reaction rate in the induction zone is controlled by the heterogencous surface reaction rate while in the induction xone is controled by the heterogeneous surface reactio rate while in the reaction zone diffusion of the gas into the pores is found to be the rate limiting step. Conduction heat transfer within the particle, convective heat transfer between the particles and the gas and chemical heat release within the particles are considered in this model to describe the temperature distribution witin the psrticles in both the induction and reaction xones. Thermal runaway is used as the criterion of igoition at the end of the induction zone and the singularity at the C-J plane is used to terminate the reaction zone. Thernalrunaway is used as the criterion of ignition at the end of the induction a lack of sufficient data, some contants used in this model were chosen to provide the best fit between the theory and experiment. The model made it possible to compute the structure of dust detonations without separate treatment of the induction and reaction zones and was used to determine the effects of particle size on detonation structure and propagation velocity. In those cases in which experimental data was available computed and measured results were in good agreement.

利用作用于流体边界层上的电磁体积力改变流体边界层的结构，研究电磁力对流场的控制作用效果。电极与磁极交替分布的电磁场激活板包覆在圆柱体表面置于流动的电解质溶液中，产生的电磁力沿圆柱体表面分布，可以改变流体边界层的结构，从而实现对流场的控制。用电磁屏蔽和时域控制的方法调整电磁力的时空分布参数，圆柱绕流分离点可以在前驻点和后驻点之间变动，产生不同的控制效果。流体边界层上的电磁力能连续控制圆柱绕流、尾流涡街的形态。正向电磁力具有较好的消涡、减震和减阻控制效应。反向电磁力具有明显的增涡控制效应，具有较强的制动控制效应，此时圆柱体表面涡量分布的对称性和稳定性被破坏。

在水平激波管中，研究激波与堆积粉尘的相互作用，并通过带示踪粒子的R射线和阴影摄影，记录堆积粉尘内外流场的波系结构。引入“粒化温度”，基于稠密气体分子动力学的思路导出堆积粉尘的守恒方程和本构方程，利用AUSM+格式对激波与堆积粉尘相互作用现象进行了数值模拟。计算结果与实验结果基本相符。

Experiments of explosion venting in different conditions were performed in a cylindrical vessel with a vent duct; the pressure-time profiles from four transducers mounted in the line-of-sight centerline outside the vessel and the clear sequential shadowgraphs of external venting flow field taken by a high-speed shadowgraph imaging system were obtained. Based on these results, the characteristics of the external pressure field during venting were discussed systematically to explain the generation mechanism of the secondary explosion. In addition, the variations of the intensity of the secondary explosion in different venting conditions, namely the failure pressure, ignition location, area blockage ratio or equivalence ratio of the fuel, were also analyzed in detail.

许多因燃烧导致的爆炸事故都与空间局部受限有关，例如管壁和管内障碍物可使火焰自行加速，并导致爆炸。基于湍流模型和EBU-Arrhenius燃烧模型，利用IMPLE格式对甲烷-空气混合物在管内燃烧时，因障碍物的作用而发生的爆炸现象进行了三维空间的数值模拟。计算结果描述了火焰加速和激波生成的过程。