In response to the demand for short-range detection of anti-smoke environment interference by laser fuzes, this study proposes a smoke environment simulation of non-uniform continuous point source diffusion and investigates an experimental laboratory smoke environment using an ammonium chloride smoke agent. The particle size distribution, composition, and mass flow distribution of the smoke were studied. Based on a discrete phase model and a $k-\epsilon$ turbulence model, a numerical simulation was developed to model the smoke generation and diffusion processes of the smoke agent in a confined space. The temporal and spatial distribution characteristics of the smoke mass concentration, velocity, and temperature in the space after smoke generation were analyzed, and the motion law governing the smoke diffusion throughout the entire space was summarized. Combined with the experimental verification of the smoke environment laboratory, the results showed that the smoke plume changed from fan-shaped to umbrella-shaped during smoke generation, and then continued to spread around. Meanwhile, the mass concentration of smoke in the space decreased from the middle outward; the changes in temperature and velocity were small and stable. In the diffusion stage (after 900 s), the mass concentration of smoke above 0.8 m was relatively uniform across an area of smoke that was 12 m thick. The concentration decreased over time, following a consistent decreasing trend, and the attenuation was negligible in a very short time. Therefore, this system was suitable for conducting experimental research on laser fuzes in a smoke environment. Owing to the stability of the equipment and facilities, the setup could reproduce the same experimental smoke environment by artificially controlling the smoke emission of the smoke agent. Overall, this work provides a theoretical reference for subsequent research efforts regarding the construction of uniform smoke environments and evaluating laser transmission characteristics in smoky environments.

针对激光引信抗烟环境干扰短距离探测的需求，本研究提出了一种非均匀连续点源扩散的烟环境模拟，并研究了使用氯化铵烟剂的实验室烟环境。研究了烟气的粒度分布、成分和质量流量分布。基于离散相位模型和$ķ-\epsilon$湍流模型，开发了数值模拟来模拟烟雾剂在密闭空间中的烟雾生成和扩散过程。分析了烟气产生后空间内烟气质量浓度、速度和温度的时空分布特征，总结了烟气在整个空间内扩散的运动规律。结合烟雾环境实验室的实验验证，结果表明，烟羽在烟雾产生过程中由扇形变为伞形，然后继续向四周扩散。同时，空间内烟雾的质量浓度由中向外递减；温度和速度的变化很小且稳定。在扩散阶段（900 秒后），在 12 m 厚的烟雾区域中，0.8 m 以上的烟雾质量浓度相对均匀。浓度随着时间的推移而下降，遵循一致的下降趋势，并且在很短的时间内衰减可以忽略不计。因此，该系统适用于在烟雾环境中进行激光引信的实验研究。由于设备和设施的稳定性，该装置可以通过人为控制发烟剂的发烟量来重现相同的实验烟雾环境。总体而言，这项工作为后续关于均匀烟雾环境构建和烟雾环境中激光传输特性评估的研究工作提供了理论参考。浓度随着时间的推移而下降，遵循一致的下降趋势，并且在很短的时间内衰减可以忽略不计。因此，该系统适用于在烟雾环境中进行激光引信的实验研究。由于设备和设施的稳定性，该装置可以通过人为控制发烟剂的发烟量来重现相同的实验烟雾环境。总体而言，这项工作为后续关于均匀烟雾环境构建和烟雾环境中激光传输特性评估的研究工作提供了理论参考。浓度随着时间的推移而下降，遵循一致的下降趋势，并且在很短的时间内衰减可以忽略不计。因此，该系统适用于在烟雾环境中进行激光引信的实验研究。由于设备和设施的稳定性，该装置可以通过人为控制发烟剂的发烟量来重现相同的实验烟雾环境。总体而言，这项工作为后续关于均匀烟雾环境构建和烟雾环境中激光传输特性评估的研究工作提供了理论参考。该系统适用于在烟雾环境中进行激光引信的实验研究。由于设备和设施的稳定性，该装置可以通过人为控制发烟剂的发烟量来重现相同的实验烟雾环境。总体而言，这项工作为后续关于均匀烟雾环境构建和烟雾环境中激光传输特性评估的研究工作提供了理论参考。该系统适用于在烟雾环境中进行激光引信的实验研究。由于设备和设施的稳定性，该装置可以通过人为控制发烟剂的发烟量来重现相同的实验烟雾环境。总体而言，这项工作为后续关于均匀烟雾环境构建和烟雾环境中激光传输特性评估的研究工作提供了理论参考。