不同尺寸鱼雷网式过滤器内流场数值模拟
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摘要
为观测不同尺寸鱼雷网式过滤器内的水流流动情况,基于fluent软件和相应的计算方法,对不同尺寸鱼雷网式过滤器进行了数值模拟计算。结果显示:数值模拟计算与实际试验计算的8寸鱼雷网式过滤器进出口水头损失相对误差最大值为5.99%,最小值为1.41%,说明选择的数学模型具有一定的准确性和可靠度;不同4种尺寸的鱼雷网式过滤器内流场的数值模拟结果表明,不同尺寸的过滤器内部流场变化基本相同,压强变化及速度变化基本一致;结构大小不同的过滤器都有一个最适合的工作流量范围。试验研究进一步揭示不同尺寸鱼雷网式过滤器内流场变化规律的同时,实际应用中为选择高效、节能的过滤器尺寸提供参考依据。
Based on Fluent software,the porous media model and RNG k-ε turbulence model are used to simulate the flow field of torpedo screen filter with different sizes.The results show that the relative error of inlet and outlet head loss of 8-inch torpedo screen filter calculated by numerical simulation and actual test are 5.99% and 1.41%,respectively,which shows that the selected mathematical model has certain accuracy and reliability.The numerical simulation results of torpedo screen filter with different sizes show that the variation of flow field with different size is basically the same,and the change of pressure and velocity is basically the same;the filters with different sizes all have a most suitable working flow range.The experimental study further reveals the internal flow field variation of torpedo mesh filter with different sizes,and provides a reference for selecting the size of high efficiency and energy saving filter in practical application.
Based on Fluent software,the porous media model and RNG k-ε turbulence model are used to simulate the flow field of torpedo screen filter with different sizes.The results show that the relative error of inlet and outlet head loss of 8-inch torpedo screen filter calculated by numerical simulation and actual test are 5.99% and 1.41%,respectively,which shows that the selected mathematical model has certain accuracy and reliability.The numerical simulation results of torpedo screen filter with different sizes show that the variation of flow field with different size is basically the same,and the change of pressure and velocity is basically the same;the filters with different sizes all have a most suitable working flow range.The experimental study further reveals the internal flow field variation of torpedo mesh filter with different sizes,and provides a reference for selecting the size of high efficiency and energy saving filter in practical application.
引文
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[8]阿力甫江·阿不里米提,虎胆·吐马尔白,马合木江·艾合买提,等.直冲洗鱼雷网式过滤器内流场的数值模拟[J].节水灌溉,2014,(10):6-10.
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[10]阿力甫江·阿不里米提,巴合提瓦尔·马苏尔.5寸鱼雷除砂网式全自动冲洗过滤器:中国,CN 105727616A[P].2016-07-06.
[11]阿力甫江·阿不里米提,新疆农业大学.6寸鱼雷除砂网式全自动冲洗过滤器:中国,CN201310567509.X[P].2015-05-20.
[12]阿力甫江·阿不里米提,阿不都热合曼·尼亚孜.8寸鱼雷除砂网式全自动冲洗过滤器:中国,CN104623957A[P].2015-05-20.
[13]阿力甫江·阿不里米提,虎胆·吐马尔白,木拉提·玉赛音,等.微灌鱼雷网式过滤器全流场数值模拟[J].农业工程学报,2017,33(3):107-112.
[14]阿力甫江·阿不里米提,虎胆·吐马尔白,木拉提·玉赛音,等.浑水条件下鱼雷网式过滤器的试验研究[J].灌溉排水学报,2018,(10).
[15]阿力甫江·阿不里米提,虎胆·吐马尔白.典型鱼雷网式过滤器的试验研究及数值模拟[M].北京:中国水利水电出版社,2018,(1):94-122.
[16]阿力甫江·阿不里米提,陶洪飞,马英杰,等.不同出水口位置下全自动鱼雷网式过滤器内部流场的数值模拟[J].灌溉排水学报,2015,34(12):47-51.
[17]陶洪飞,滕晓静,马英杰,等.出水管角度对网式过滤器内部流场影响研究[J].节水灌溉,2017,(8):21-25,29.
[2]赵文杰,丁凡琳.我国节水灌溉技术推广现状与对策研究综述[J].节水灌溉,2015,(4):95-98.
[3]杨晓军,刘飞,吴玉秀,等.新疆农田节水灌溉系统首部过滤设备选型探讨[J].中国农村水利水电,2014,(5):76-80.
[4]Wenyong Wu,Wei Chen,Honglu Liu,et al.A new model for head loss assessment of screen filters developed with dimensional analysis in drip irrigation systems[J].Irrigation and Drainage,2014,(63):523-531.
[5]Jing Wang,Seong Chan Kim,David Y D Pui.Carbon Nanotube Penetration through a Screen Filter:Numerical Modeling and Comparison with Experiments[J].Aerosol Science and Technology,2011,(45):443-452.
[6]丁欣硕,焦楠.Fluent 14.5流体仿真计算从入门到精通[M].北京:清华大学出版社,2014.
[7]刘飞,刘焕芳.自清洗网式过滤器水头损失和排污时间研究[J].农业机械学报.2013:127-134.
[8]阿力甫江·阿不里米提,虎胆·吐马尔白,马合木江·艾合买提,等.直冲洗鱼雷网式过滤器内流场的数值模拟[J].节水灌溉,2014,(10):6-10.
[9]阿力甫江·阿不里米提,虎胆·吐马尔白,木拉提·玉赛音,等.清水条件下鱼雷网式过滤器水头损失试验研究[J].灌溉排水学报,2018,37(2):64-70.
[10]阿力甫江·阿不里米提,巴合提瓦尔·马苏尔.5寸鱼雷除砂网式全自动冲洗过滤器:中国,CN 105727616A[P].2016-07-06.
[11]阿力甫江·阿不里米提,新疆农业大学.6寸鱼雷除砂网式全自动冲洗过滤器:中国,CN201310567509.X[P].2015-05-20.
[12]阿力甫江·阿不里米提,阿不都热合曼·尼亚孜.8寸鱼雷除砂网式全自动冲洗过滤器:中国,CN104623957A[P].2015-05-20.
[13]阿力甫江·阿不里米提,虎胆·吐马尔白,木拉提·玉赛音,等.微灌鱼雷网式过滤器全流场数值模拟[J].农业工程学报,2017,33(3):107-112.
[14]阿力甫江·阿不里米提,虎胆·吐马尔白,木拉提·玉赛音,等.浑水条件下鱼雷网式过滤器的试验研究[J].灌溉排水学报,2018,(10).
[15]阿力甫江·阿不里米提,虎胆·吐马尔白.典型鱼雷网式过滤器的试验研究及数值模拟[M].北京:中国水利水电出版社,2018,(1):94-122.
[16]阿力甫江·阿不里米提,陶洪飞,马英杰,等.不同出水口位置下全自动鱼雷网式过滤器内部流场的数值模拟[J].灌溉排水学报,2015,34(12):47-51.
[17]陶洪飞,滕晓静,马英杰,等.出水管角度对网式过滤器内部流场影响研究[J].节水灌溉,2017,(8):21-25,29.