海军航空大学学报2026，Vol.41Issue(4)：672-680,9.DOI:10.7682/j.issn.2097-1427.2026.04.009
单液滴附着光学窗口的光谱透射特性模拟分析
Simulation and Analysis of Spectral Transmission Characteristics for a Single Droplet Attached on Optical Window
摘要
Abstract
The adhesion of droplets to optical glass surfaces,such as aircraft windshields and infrared detection win-dows,markedly degrades the spectral transmittance.The composite structure formed by a single droplet adhering to an optical window is investigated.The droplet morphology is reconstructed using Surface Evolver,considering the effects of surface tension and gravity.Spectral radiative transfer model for the droplet-on-window system is developed based on the theory of radiative transfer in participating media.The spectral transmittance is simulated via the Monte Carlo ray tracing method.The computational deviations caused by the idealized spherical-cap assumption for the droplet shape are discussed,and the influences of droplet size,contact angle,direction of incidence,and wavelength are analyzed.The re-sults demonstrate that when the droplet morphology is approximated as a spherical cap,the deviation in spectral trans-mittance increases with the droplet's characteristic size,reaching a maximum of 43.93％.The spectral transmittance in-creases with larger contact angles,exhibiting a variation of up to 0.2 at a characteristic droplet size of 2.0 mm.Further-more,the spectral transmittance at wavelengths below 2.5 μm is generally higher when light is incident from the droplet side than that from the glass side.关键词
液滴附着窗口/液滴形貌重构/光谱透射率/蒙特卡罗光线追踪Key words
droplet-attached window/droplet morphology reconstruction/spectral transmittance/Monte Carlo ray trac-ing分类
数理科学引用本文复制引用
郑建旭,尹斌,符文爽,陈学,孙创..单液滴附着光学窗口的光谱透射特性模拟分析[J].海军航空大学学报,2026,41(4):672-680,9.基金项目
国家自然科学基金(52276058) （52276058）
