刺激剂储罐排液液面平稳性CFD优化分析

The CFD Optimization Analysis of Liquid Surface Stability in the Irritants Tank Drainage Process

针对刺激剂储罐在排液初期液面失稳严重的问题，根据储罐排液特点，采用VOF模型耦合RNGk-ε两方程模型的方法描述储罐排液初期气液流态的特性，在Fluent中实现对刺激剂储罐气液流场特性的模拟分析。针对存在问题，提出了将顶部进气结构改为底部插入进气管进气的优化方案，并通过对比分析优化前后储罐排液初期液面变化规律，得出优化方案能有效减弱增压气体对罐内液面的冲击，保证排液过程中液面的平稳性。结果表明：优化后储罐进气结构具有良好排液稳定性，对于提高武器的作战性能具有重要意义。

Aiming at the problem of liquid surface serious instability in irritants tank initial drainage state, combining with pressurized liquid discharge characteristics, use the method of VOF model coupling RNG（ k-ε ）two-equation model to describe the characteristics of gasliquid flow in tank initial drain state, and analyze the characteristics of flow field on the flu- ent software platform. In view of the existing problems, an optimization plan is presented that modifying the air-intake pipe structure from tank top to tank bottom. Then through comparative analysis the change rule of tank liquid surface before and after optimization, ob- tain the result that the optimization plan can effectively weaken the impact of pressurized gas to tank liquid level, and ensure the liquid surface stability in the process of drainage. The results show that the optimized tank air-intake structure has good drainage stability, and it is of great significance to improve the operational performance of this weavon.