泡沫-水两用幕厚度与光衰减效果的关系

Relationship between optical attenuation effect and thickness of foam-water dual-purpose curtain

理论分析与实验研究了水幕系统施放泡沫一水两用干扰幕产生的泡沫幕／水幕施放厚度与光衰减效果的关系。实验对空中和模拟甲板表面施放不同气流量比例的4～32层离散液滴状水幕和泡沫幕，测量其对平行光的衰减。实验结果表明：对于不同泡沫一水两用幕施放位置和气流量比例，随着施放厚度的增加，光衰减效果均明显提高，透射照度的衰减最高可达95．8％（空中）与98．4％（甲板表面）；透射照度衰减的速率随施放层数的增加而逐渐减小。

. The relationship between the light attenuation effect and the thickness of foam/water curtain produced by foam-water dual-purpose interfere curtain of countermeasure washdown system was analyzed theoretically and studied through experiments. The curtain composed of dispersed droplets with thickness from 4 to 32 layers and different gas-liquid ratio was released to experimental deck and atmosphere, and the attenuation of parallel light was measured. Re sults show that attenuation of visible light by foam-water dual-purpose curtain increases signif- icantly with thickness. The maximum of light attenuation reaches 95.8% when released to at- mosphere and 98.4% when released to experimental deck. The transmission diminishes slower when the thickness increases. The research is valuable for improving interfere theory and e- quipment technique of foam curtain.