水雾扩散模型仿真

建立水雾红外衰减模型时，通常把水雾空间看作单一均匀整体处理，然而雾滴的扩散现象使水雾的雾滴密度无法保证处处相等，所以仿真结果与实际情况相比普遍存在较大偏差。针对这一问题，基于高斯扩散理论与Mie散射理论，提出了一种新的建模方案。通过将水雾空间划分为多个子空间，并计算每个子空间内水雾消光性能的建模方法，提高建模的准确性。同时结合红外制导导弹来袭的方向变化，计算出不同方向上的水雾消光性能。从仿真结果可以看出，这种建模方式能够很好地克服以往建模方法的缺陷，为探索水雾的精确建模提供了一种新思路。

Research on Simulation of Water Diffusion Model

The models of water mist always regard the water mist space as a single homogeneous whole. Because the droplets density changes everywhere, which is caused by the diffusion of the water mist, there is a huge deviation between the simulation results and the actual situation. In order to solve this problem, a new modeling method is given based on Gaussian diffusion theory and Mie scattering theory. Through the method of dividing the water mist space and calculating the extinction performance of water mist in each subspace, the accuracy of the model is improved. At the same time, considering the change of the infrared guided missile incoming direction, the different directions of water mist extinction coefficient is calculated. From the simulation results, the modeling approach proves to overcome the disadvantages of the former modeling methods, and provides new ideas to establish more accurate models of water mist.