吸收性介质内气泡的表观辐射特性研究  

Apparent Radiation Characteristics of Bubbles in Absorbing Medium

作　　者：马兰新 王富强[1] 王成安[1] 谭建宇[1] 

机构地区：[1]哈尔滨工业大学(威海)汽车工程学院,威海264209

出　　处：《工程热物理学报》2015年第8期1794-1798,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.51336002;No.51406042);教育部新世纪人才基金(No.NCET-12-0152)

摘　　要：气泡的存在对介质的辐射传输特性具有重要影响。本文基于广义MIE理论计算了气泡在吸收性介质内的辐射特性。研究了介质的复折射率虚部对气泡表观辐射特性的影响以及0.2-200μm可见光及红外波长范围内介质水的吸收特性对气泡粒子系散射系数和吸收系数的影响。结果表明,随着粒子尺度参数的增大,介质吸收对气泡表观辐射特性的影响相应增大,忽略介质吸收将带来很大误差;当波长大于2μm时,介质水的吸收特性对气泡的散射特性影响不能忽略。The presence of bubbles plays an important role on the radiative properties of medium.In this work,the apparent radiation characteristics of bubbles in absorbing medium are investigated by a generalization of the Lorenz-Mie theory.The efficiency factors of bubbles with different absorption indexes are studied.The scattering and absorption coefficients of bubbles embedded in water for wavelength between 0.2 to 200 μm are also estimated.The results show that the effect of absorption of water on the apparent radiation characteristics increases as the size parameter of bubbles increases.And the absorption of water on the scattering properties of bubbles can＇t be ignored for wavelength larger than 2 μm.

关 键 词：吸收性介质 气泡 MIE理论 表观辐射特性 

分 类 号：TK123[动力工程及工程热物理—工程热物理]