Production of Artificial Fog in the PAVIN Fog and Rain Platform: In Search of Big Droplets Fog
Production of Artificial Fog in the PAVIN Fog and Rain Platform: In Search of Big Droplets Fog作者机构：Cerema Reasearch Team STI 8-10 Rue Bernard Palissy Clermont-Ferrand France
出 版 物：《Atmospheric and Climate Sciences》 (大气和气候科学（英文）)
年 卷 期：2024年第14卷第1期
页 面：42-61页
学科分类：08[工学] 0825[工学-航空宇航科学与技术]
主 题：Fog Physical Simulation Droplets Size Distribution Meteorological Optical Range
摘 要：In fog, visibility is reduced. This reduction in visibility is measured by the meteorological optical range (MOR), which is important for studying human perception and various sensors in foggy conditions. The Cerema PAVIN Fog & Rain platform is capable of producing calibrated fog in order to better analyses it and understand its consequences. The problem is that the droplets produced by the platform are not large enough to resemble real fog. This can have a major impact on measurements since the interaction between electromagnetic waves and fog depends on the wavelength and diameter of the droplets. To remedy this, Cerema is building a new platform with new equipment capable of generating fog. This study analyses different nozzles and associated usage parameters such as the type of water used and the pressure used. The aim is to select the best nozzle with the associated parameters for producing large-diameter droplets and therefore more realistic fog.
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