• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (8): 285-292.doi: 10.3901/JME.2022.08.285

• 交叉与前沿 • 上一篇    

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海洋气流气溶胶传输与沉降模型研究

卞贵学, 王安东, 张勇, 王玺, 樊伟杰, 陈跃良   

  1. 海军航空大学青岛校区 青岛 266041
  • 收稿日期:2021-08-09 修回日期:2021-11-20 出版日期:2022-04-20 发布日期:2022-06-13
  • 通讯作者: 王安东(通信作者),男,1990年出生,博士,讲师。主要研究方向为飞机结构强度、腐蚀与防护。E-mail:wad0532@sina.com
  • 作者简介:卞贵学,男,1981年出生,博士,讲师。主要研究方向海洋大气环境气对飞机表面的影响。E-mail:bianguixue@163.com
  • 基金资助:
    山东省高等学校"青创科技计划"(2020KJA014)和山东省自然科学基金(ZR2020ME130)资助项目。

Study on Aerosol Transport and Deposition Model of Ocean Air Flow

BIAN Guixue, WANG Andong, ZHANG Yong, WANG Xi, FAN Weijie, CHEN Yueliang   

  1. Qingdao Campus, Naval Aviation University, Qingdao 266041
  • Received:2021-08-09 Revised:2021-11-20 Online:2022-04-20 Published:2022-06-13

摘要: 为模拟飞机在海洋上空飞行时气流气溶胶在其结构表面的动态累积过程,准确获取造成飞机结构腐蚀的基础数据,针对海洋上空气流特性,分析海洋气流气溶胶的存在形态、尺寸、尺寸谱、浓度及近海和远海气溶胶的产生函数,得到风速、传输距离等因素对海洋气流气溶胶沉降数量的影响;在考虑传输过程中沉降速度随时间变化的基础上,建立气溶胶传输和沉降的双指数模型,并对模型的适用范围、灵敏度、可用性进行分析、验证。结果表明,该模型以沉降速度和距离变化为基础,综合考虑水平、垂直两个维度的浓度变化,对初始沉降量、风速、初始沉降速度、沉降速度减小系数等参数的变化十分敏感,计算结果与实测结果相关系数接近0.99。可见,模型较好地描述了海洋气溶胶在海洋大气环境区域的传输与沉降问题,为进一步描述飞机飞行过程中机身表面气溶胶的累积过程奠定了基础。

关键词: 海洋气流, 气溶胶, 传输, 沉降, 模型

Abstract: In order to simulate the dynamic accumulation process of aerosol on the structural surface of aircraft flying over the ocean and accurately obtain the basic data causing aircraft structural corrosion, according to the characteristics of air flow over the ocean, the existing form, size, size spectrum, concentration and the generation function of aerosol in offshore and far sea are analyzed. The influence of the wind speed and transmission distance and other factors on the amount of aerosol deposition in ocean current are obtained. On the basis of considering the variation of settling velocity with time in the process of transport, a double exponential model of aerosol transport and deposition is established, and the application scope, sensitivity and availability of the model are analyzed and verified. The results show that, the model which is based on the variation of settlement velocity and distance, comprehensively considers the concentration variation of horizontal and vertical dimensions, and is very sensitive to the variation of parameters such as initial settlement, wind speed, initial settlement velocity and settlement velocity reduction coefficient. The correlation coefficient between the calculated results and the measured results is close to 0.99. It can be seen that the model can better describe the transport and deposition of marine aerosols in the marine atmospheric environment, which lays a foundation for further describing the accumulation process of aerosols on the fuselage surface during aircraft flight.

Key words: ocean air flow, aerosol, transport, deposition, model

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