室内空调扫风对颗粒物二次悬浮的影响研究
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摘要
在空调扫风情况下,会引起室内微小颗粒物的二次悬浮,影响室内空气质量以及人类身体健康。在室内空调扫风情况下,通过CFD模拟研究地面颗粒物的具体运动轨迹,探究产生二次悬浮的原因,使用Fluent软件对室内地面颗粒物进行非定常数值模拟。分析结果表明:室内空调扫风情况下颗粒物的二次悬浮主要是由于在扫风的情况下,空气中产生了速度场和大量的涡,这些速度场以及涡的出现会引起微小颗粒物的二次悬浮,颗粒物会在各方面综合作用下跟随流场运动并产生逸散行为。
Under the condition of air-condition wind swept,the resuspend fine particle on indoor ground will affect indoor air quality and human health.It can provide the basis for improving indoor air quality by studying the trajectories of particle resuspension.In order to understand the specific trajectories of ground particles and the causes of resuspension in the condition of indoor air-condition wind swept,the particle movement was transient simulated by Fluent software.The results showed that:under the air-condition wind swept situation,the emergence of the velocity field and vortex will cause the resuspension of particles,particles will be integrated in all aspects of motion and follow the flow field in a dissipation behavior.
Under the condition of air-condition wind swept,the resuspend fine particle on indoor ground will affect indoor air quality and human health.It can provide the basis for improving indoor air quality by studying the trajectories of particle resuspension.In order to understand the specific trajectories of ground particles and the causes of resuspension in the condition of indoor air-condition wind swept,the particle movement was transient simulated by Fluent software.The results showed that:under the air-condition wind swept situation,the emergence of the velocity field and vortex will cause the resuspension of particles,particles will be integrated in all aspects of motion and follow the flow field in a dissipation behavior.
引文
[1]CHENG Z,LI L,PBAHNFLETH W.Natural ventilation potential for gymnasia-case study of ventilation and comfort in a multisport facility in northeastern United States[J].Building energy efficiency,2016,108:85-98.
[2]张志军.基于室内空气质量的室内环境设计研究[J].环境科学与管理,2017(2):81-84.
[3]JONES A P.Indoor air quality and health[J].Atmospheric environment,1999,33:4535-4564.
[4]MOLHAVE L,SCHNEIDER T,KJARGAARD S K,et al.House dust in seven Danish offices[J].Atmospheric environment,2000,34:4767-4779.
[5]WASSERKORT R.From nanoparticles to health effect[C]//Physics of Low Dimensional System.New York:Kluwer A-cademy Plenum Poblishers,2001:169-179.
[6]PUTAUD J P,RAES F,DINGENEN R V,et al.A European aerosol phenomenology-2:chemical characteristics of particulate matter at kerbside,urban,rural and background sites in Europe[J].Atmospheric environment,2004,38:2579-2595.
[7]吴国平,胡伟,滕恩江,等.室外空气污染对成人呼吸系统健康影响的分析.中国环境监测,2001,17(增刊1):33-38.
[8]JING Q,ANDREA R Q,KATHLEEN R.F,et al.Estimating the resuspension rate and residence time of indoor particles[J].Air repair,2012,58:502-516
[9]JIANG Y,CHEN Q Y.Using large eddy simulation to study particle motions in a room[J].Indoor air,2005,15(1):281-290.
[10]GOLDASTEH I,TIAN Y,AHMADI G,et al.Human induced flow field and resultant particle resuspension and transport during gait cycle[J].Building&environment,2014,77(15):101-109.
[11]YU B F,HU Z B,LIU M,et al.Review of research on airconditioning systems and indoor air quality control for human health[J].International journal of refrigeration,2009,32(1):3-20.
[12]GLAIN T,RONDEAU A,PEILLON S,et al.CFD modelling of the wall friction velocity field in the ITER tokamak resulting from airflow during a loss of vacuum accident:consequences for particle resuspension[J].Fusion engineering&design,2015,100:87-99.
[13]袁伟斌,李泽彬,叶呈敏.局部开洞对高层建筑风荷载特性的研究[J].浙江工业大学学报,2016,44(4):451-455.
[14]李思文,李华,杨臧健,等.光管内湍流脉动传热影响因素的实验研究[J].浙江工业大学学报,2013,41(4):395-399.
[15]POSNER J D,BUCHANAN C R,DUNN-RANKIN D.Measurement and prediction of indoor air flow in a model room[J].Energy and buildings,2003,35(5):515-526.
[16]ZHAO B,ZHANG Y,LI X,et al.Comparison of indoor aerosol particle concentration and deposition in different ventilated rooms by numerical method[J].Building and enviroment,2004,39:1-8.
[17]LI A,AHMADI G.Dispersion and deposition of spherical particles from point sources in a turbulent channel flow[J].Aerosol science&technology,1992,16:209-226.
[18]DONG Q,FENG X.Parameters optimization of flowthrough air lint cleaner based on CFD discrete phase model[J].Transactions of the Chinese society of agricultural engineering,2014,30(2):9-16.
[19]童聪,李双越,綦海军,等.立磨系统风量对物料重力分级影响模拟分析[J].浙江工业大学学报,2013,41(3):321-326.
[20]韩云龙,胡永梅,钱付平,等.自然通风室内颗粒物分布特征[J].安全与环境学报,2013,13(2):116-120.
[21]CHEONG K D,DJUNAEDY E,POH T K.Measurements and computations of contaminant's distribution in an office environment[J].Building and environment,2003,38(1):135-145.
[22]王君,宋永兴,姜营,等.基于结构化动网格的涡旋压缩机内部流场模拟[J].工程热物理学报,2016(2):309-313.
[23]YE F,XIAO J,HU B,et al.Implementation for model of adsorptive hydrogen storage using UDF in fluent[J].Physics procedia,2012,24(8):793-800.
[2]张志军.基于室内空气质量的室内环境设计研究[J].环境科学与管理,2017(2):81-84.
[3]JONES A P.Indoor air quality and health[J].Atmospheric environment,1999,33:4535-4564.
[4]MOLHAVE L,SCHNEIDER T,KJARGAARD S K,et al.House dust in seven Danish offices[J].Atmospheric environment,2000,34:4767-4779.
[5]WASSERKORT R.From nanoparticles to health effect[C]//Physics of Low Dimensional System.New York:Kluwer A-cademy Plenum Poblishers,2001:169-179.
[6]PUTAUD J P,RAES F,DINGENEN R V,et al.A European aerosol phenomenology-2:chemical characteristics of particulate matter at kerbside,urban,rural and background sites in Europe[J].Atmospheric environment,2004,38:2579-2595.
[7]吴国平,胡伟,滕恩江,等.室外空气污染对成人呼吸系统健康影响的分析.中国环境监测,2001,17(增刊1):33-38.
[8]JING Q,ANDREA R Q,KATHLEEN R.F,et al.Estimating the resuspension rate and residence time of indoor particles[J].Air repair,2012,58:502-516
[9]JIANG Y,CHEN Q Y.Using large eddy simulation to study particle motions in a room[J].Indoor air,2005,15(1):281-290.
[10]GOLDASTEH I,TIAN Y,AHMADI G,et al.Human induced flow field and resultant particle resuspension and transport during gait cycle[J].Building&environment,2014,77(15):101-109.
[11]YU B F,HU Z B,LIU M,et al.Review of research on airconditioning systems and indoor air quality control for human health[J].International journal of refrigeration,2009,32(1):3-20.
[12]GLAIN T,RONDEAU A,PEILLON S,et al.CFD modelling of the wall friction velocity field in the ITER tokamak resulting from airflow during a loss of vacuum accident:consequences for particle resuspension[J].Fusion engineering&design,2015,100:87-99.
[13]袁伟斌,李泽彬,叶呈敏.局部开洞对高层建筑风荷载特性的研究[J].浙江工业大学学报,2016,44(4):451-455.
[14]李思文,李华,杨臧健,等.光管内湍流脉动传热影响因素的实验研究[J].浙江工业大学学报,2013,41(4):395-399.
[15]POSNER J D,BUCHANAN C R,DUNN-RANKIN D.Measurement and prediction of indoor air flow in a model room[J].Energy and buildings,2003,35(5):515-526.
[16]ZHAO B,ZHANG Y,LI X,et al.Comparison of indoor aerosol particle concentration and deposition in different ventilated rooms by numerical method[J].Building and enviroment,2004,39:1-8.
[17]LI A,AHMADI G.Dispersion and deposition of spherical particles from point sources in a turbulent channel flow[J].Aerosol science&technology,1992,16:209-226.
[18]DONG Q,FENG X.Parameters optimization of flowthrough air lint cleaner based on CFD discrete phase model[J].Transactions of the Chinese society of agricultural engineering,2014,30(2):9-16.
[19]童聪,李双越,綦海军,等.立磨系统风量对物料重力分级影响模拟分析[J].浙江工业大学学报,2013,41(3):321-326.
[20]韩云龙,胡永梅,钱付平,等.自然通风室内颗粒物分布特征[J].安全与环境学报,2013,13(2):116-120.
[21]CHEONG K D,DJUNAEDY E,POH T K.Measurements and computations of contaminant's distribution in an office environment[J].Building and environment,2003,38(1):135-145.
[22]王君,宋永兴,姜营,等.基于结构化动网格的涡旋压缩机内部流场模拟[J].工程热物理学报,2016(2):309-313.
[23]YE F,XIAO J,HU B,et al.Implementation for model of adsorptive hydrogen storage using UDF in fluent[J].Physics procedia,2012,24(8):793-800.