微流体惯性过滤器的参数优化与数值模拟
|
摘要
气溶胶的过滤效率和压降是衡量安全壳过滤排放系统中过滤器性能的重要指标。过滤排放系统内过滤器的过滤效率与众多因素有关,并且各因素对过滤效率和压降的影响程度不同。选取转折角、截面长度、管长和气流速度4个主要因素进行了优化研究,旨在分析各因素对过滤效率和压降的影响程度,并对微流体惯性过滤器的工艺参数进行合理的设计。运用正交试验原理,对4个因素的16组试验方案,进行了相关的数值模拟试验。基于试验结果,运用正交试验法中的极差分析法和方差分析法对4个因素进行详细的分析。结果表明,气流速度、截面长度、转折角对过滤效率的影响特别显著,均满足F>F_(0.01);气流速度对压降影响显著,满足F_(0.01)>F>F_(0.05)。该研究可为过滤排放系统中过滤器的设计提供指导和参考。
Filtration efficiency and pressure drop of aerosol are important indicators to measure the performance of filters in safety shell filtration and discharge system.The filtration efficiency of the filters in the filtration discharge system is related to many factors,and the influence degree of each factor on the filtration efficiency and pressure drop is different.Four main factors,turning angle,section length,pipe length and airflow velocity,are selected to optimize the study.The purpose is to analyze the influence degree of each factor on the filtration efficiency and pressure drop,and to rationalize the process parameters of the microfluidic inertial filter.Four factors with sixteen groups of experimental schemes are set up by using the principle of orthogonal experiment for relevant numerical simulation experiments.Based on the test results,the range analysis and variance analysis of the orthogonal test method are used to analyze the four factors in detail.The results show that the influence of air velocity,cross section length and turning angle on filtration efficiency is particularly significant,F values are all satisfied:F>F_(0.01);air velocity has significant influence on pressure drop,F value is satisfied:F_(0.01)>F>F_(0.05).This study can provide guidance and reference for the design of filters in filtration and discharge systems.
Filtration efficiency and pressure drop of aerosol are important indicators to measure the performance of filters in safety shell filtration and discharge system.The filtration efficiency of the filters in the filtration discharge system is related to many factors,and the influence degree of each factor on the filtration efficiency and pressure drop is different.Four main factors,turning angle,section length,pipe length and airflow velocity,are selected to optimize the study.The purpose is to analyze the influence degree of each factor on the filtration efficiency and pressure drop,and to rationalize the process parameters of the microfluidic inertial filter.Four factors with sixteen groups of experimental schemes are set up by using the principle of orthogonal experiment for relevant numerical simulation experiments.Based on the test results,the range analysis and variance analysis of the orthogonal test method are used to analyze the four factors in detail.The results show that the influence of air velocity,cross section length and turning angle on filtration efficiency is particularly significant,F values are all satisfied:F>F_(0.01);air velocity has significant influence on pressure drop,F value is satisfied:F_(0.01)>F>F_(0.05).This study can provide guidance and reference for the design of filters in filtration and discharge systems.
引文
[1] 周艳民,孙中宁,谷海峰,等,自吸式文丘里水洗器引射特性研究[J].原子能科学技术,2015,49(6):15- 19.
[2] NIU F.Modeling analyses of radioactive aerosol flow and collection in mesoscopic impactor filters[J].Progress in Nuclear Energy,2016(88):147- 155.
[3] 齐厚博.利用MEMS惯性冲击器进行安全壳内气溶胶过滤的机理研究[D].北京:华北电力大学,2016.
[4] ZHANG W.Numerical simulation of radiation aerosol collection in mesoscopic impactor filters[C]//25th International Conference on Nuclear Engineering,2017:Shanghai,China.
[5] 周夏峰,谷海峰,李富.安全壳过滤排放系统实验用气溶胶的确定及相关参数的选取[J].核动力工程,2014(5):124- 127.
[6] 张勤勤.基于CFD的叶片式除雾器的优化设计[D].成都:西南石油大学,2016.
[7] 王太飞,孟江,吉鹏.双向内外管差压流量计参数优化与数值模拟[J].自动化仪表,2018(4):87- 91.
[8] 周光超,赵永凯,韩杰,等.一种基于惯性冲击原理的亚微米粒子采样器研究[J].仪器仪表学报,2010,31(6):17- 18.
[9] 陈汉平.计算流体力学[M].北京:水利水电出版社,1995:89- 95.
[10]刘大有.两相流体动力学[M].北京:高等教育出版社,1993:56- 63.
[11]赵菊恒.灰尘在风管中运动轨迹的数值模拟[J].有色冶金设计与研究,2006,27(6):52- 55.
[12]韩志艳,王健,王旭,基于正交实验设计的语音识别特征参数优化[J].计算机科学,2010,37(1):23- 25.
[2] NIU F.Modeling analyses of radioactive aerosol flow and collection in mesoscopic impactor filters[J].Progress in Nuclear Energy,2016(88):147- 155.
[3] 齐厚博.利用MEMS惯性冲击器进行安全壳内气溶胶过滤的机理研究[D].北京:华北电力大学,2016.
[4] ZHANG W.Numerical simulation of radiation aerosol collection in mesoscopic impactor filters[C]//25th International Conference on Nuclear Engineering,2017:Shanghai,China.
[5] 周夏峰,谷海峰,李富.安全壳过滤排放系统实验用气溶胶的确定及相关参数的选取[J].核动力工程,2014(5):124- 127.
[6] 张勤勤.基于CFD的叶片式除雾器的优化设计[D].成都:西南石油大学,2016.
[7] 王太飞,孟江,吉鹏.双向内外管差压流量计参数优化与数值模拟[J].自动化仪表,2018(4):87- 91.
[8] 周光超,赵永凯,韩杰,等.一种基于惯性冲击原理的亚微米粒子采样器研究[J].仪器仪表学报,2010,31(6):17- 18.
[9] 陈汉平.计算流体力学[M].北京:水利水电出版社,1995:89- 95.
[10]刘大有.两相流体动力学[M].北京:高等教育出版社,1993:56- 63.
[11]赵菊恒.灰尘在风管中运动轨迹的数值模拟[J].有色冶金设计与研究,2006,27(6):52- 55.
[12]韩志艳,王健,王旭,基于正交实验设计的语音识别特征参数优化[J].计算机科学,2010,37(1):23- 25.