基于CAD/CFD的滴灌滴头流场动力学分析与结构优化
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摘要
本文针对滴头内部流场研究领域存在的主要问题,以滴头流道设计与优化为研究对象,通过理论分析、数值模拟、试验验证等进行研究。主要研究内容与结论如下:
(1)给出了基于滴灌滴头的宏观与微观尺度流体力学理论。典型迷宫滴头流道内部流态转捩雷诺数Re≤500。提出将多学科设计优化思想应用到滴头产品的设计,实现滴灌滴头产品的优化设计。
(2)将一种基于改进PSO最小二乘支持向量机的预测模型引入滴灌滴头水力性能预测领域。该模型能方便地预测三角形迷宫流道关键参数对滴头水力性能的影响,有助于准确认识滴头水力性能随流道结构参数的变化规律。
(3)构建了梯形迷宫流道的液固两相流理论模型,研究了滴头内液固两相流的流动特性,考察了滴头内液固两相流的压降、两相浓度分布以及流体流速对液固两相流动的影响。
(4)利用响应曲面法研究了梯形迷宫滴头流道的关键参数对滴头水力性能的影响。采用基于Optimus与Fluent相结合的方法对滴头进行了优化设计,优化后的滴头水力性能得到了提高。
(5)在Visual C平台上编制基于UG/NX5.0的三维参数化设计软件,实现滴头的三维实时参数化设计。
The hydraulics performance and the internal flow field of drip irrigation emitter are studied through theoretical analysis, numerical simulation and experimental verification. The research contents and conclusions are as follows:
(1) Based on drip irrigation emitter, the macro-scale and micro-scale hydromechanics theory are presented. The relationship between flux and pressure is analyzed. Transition Reynolds number of typical emitter labyrinth channel is less than 500. Multidisciplinary design optimization idea is proposed for drip irrigation emitter design. Drip irrigation emitter will have optimal hydraulic performance when MDO is integrated with virtual prototyping technique to optimize the design parameters of emitter.
(2) A novel prediction model based on modified PSO least square support vector machine is proposed. The effects of triangle labyrinth channel parameters on hydraulics performance of emitter can be predicted with the limited test data, thus the variation law of hydraulics performance of drip irrigation emitter following labyrinth channel parameters can be obtained.
(3) Liquid-solid two-phase theory model was been constructed firstly. The flow characteristic of liquid-solid two-phase in drip irrigation emitter is studied. The influences of liquid pressure drop, concentration distribution and velocity in drip irrigation emitter to liquid-solid two-phase flow characteristic are investigated.
(4) Trapezium labyrinth emitter channel has five key parameters, the influence of these five key parameters to hydraulic performance of drip irrigation emitter are carried out by using the Box-Benhnken response surface methodology. Being combined the Multidisciplinary design optimization software OPTIMUS with the computational fluid dynamics software FLUENT to optimize the design of emitter, in the meantime, hydraulic performance has been completely improved after optimization.
(5) The three-dimension parameter design software UG/NX 5.0 is compiled under the environment of visual C++, the model is driven by program, realizes the parameter and series design of drip irrigation emitter, and establishes basis for fluid field analysis for next step.
(1)给出了基于滴灌滴头的宏观与微观尺度流体力学理论。典型迷宫滴头流道内部流态转捩雷诺数Re≤500。提出将多学科设计优化思想应用到滴头产品的设计,实现滴灌滴头产品的优化设计。
(2)将一种基于改进PSO最小二乘支持向量机的预测模型引入滴灌滴头水力性能预测领域。该模型能方便地预测三角形迷宫流道关键参数对滴头水力性能的影响,有助于准确认识滴头水力性能随流道结构参数的变化规律。
(3)构建了梯形迷宫流道的液固两相流理论模型,研究了滴头内液固两相流的流动特性,考察了滴头内液固两相流的压降、两相浓度分布以及流体流速对液固两相流动的影响。
(4)利用响应曲面法研究了梯形迷宫滴头流道的关键参数对滴头水力性能的影响。采用基于Optimus与Fluent相结合的方法对滴头进行了优化设计,优化后的滴头水力性能得到了提高。
(5)在Visual C平台上编制基于UG/NX5.0的三维参数化设计软件,实现滴头的三维实时参数化设计。
The hydraulics performance and the internal flow field of drip irrigation emitter are studied through theoretical analysis, numerical simulation and experimental verification. The research contents and conclusions are as follows:
(1) Based on drip irrigation emitter, the macro-scale and micro-scale hydromechanics theory are presented. The relationship between flux and pressure is analyzed. Transition Reynolds number of typical emitter labyrinth channel is less than 500. Multidisciplinary design optimization idea is proposed for drip irrigation emitter design. Drip irrigation emitter will have optimal hydraulic performance when MDO is integrated with virtual prototyping technique to optimize the design parameters of emitter.
(2) A novel prediction model based on modified PSO least square support vector machine is proposed. The effects of triangle labyrinth channel parameters on hydraulics performance of emitter can be predicted with the limited test data, thus the variation law of hydraulics performance of drip irrigation emitter following labyrinth channel parameters can be obtained.
(3) Liquid-solid two-phase theory model was been constructed firstly. The flow characteristic of liquid-solid two-phase in drip irrigation emitter is studied. The influences of liquid pressure drop, concentration distribution and velocity in drip irrigation emitter to liquid-solid two-phase flow characteristic are investigated.
(4) Trapezium labyrinth emitter channel has five key parameters, the influence of these five key parameters to hydraulic performance of drip irrigation emitter are carried out by using the Box-Benhnken response surface methodology. Being combined the Multidisciplinary design optimization software OPTIMUS with the computational fluid dynamics software FLUENT to optimize the design of emitter, in the meantime, hydraulic performance has been completely improved after optimization.
(5) The three-dimension parameter design software UG/NX 5.0 is compiled under the environment of visual C++, the model is driven by program, realizes the parameter and series design of drip irrigation emitter, and establishes basis for fluid field analysis for next step.
引文
[1]逢焕成.我国节水灌溉技术现状与发展趋势分析[J].中国土壤与肥料,2006,12(5):1-6
[2]山仑,康绍忠,吴普特.中国节水农业[M].北京:中国农业出版社,2005
[3]薛亮.中国节水农业理论与实践[M].北京:中国农业出版社,2002
[4]王增发,洪小康.试论我国的节水灌溉技术[J].西北大学学报(自然科学版),1998,28(5):451-454
[5]王增发.我国水资源的供求关系与农业节水[J].西安理工大学学报,1996,12(3):263-266
[6]梅旭荣,蔡典雄,杨正礼等.节水高效农业理论与技术[M].北京:中国农业科技出版社,2004
[7]李云开.滴头分型流道设计及其流动特性的试验研究与数值模拟[D].中国农业大学,2005
[8]中国水利年鉴编撰委员会.中国水利年鉴[C].北京:中国水利出版社,2003
[9]姚振宪,何松林.滴灌设备与滴灌系统规划设计[M].北京:中国农业出版社,1999
[10]D.戈德堡,B.戈内特,D.里蒙等.滴灌原理与应用[M].西世良,薛克宗等译.北京:中国农业机械出版社,1984
[11]De Kreij C,Burg A M,Runia W T.Drip lrrigation Emitter Clogging in Dutch Greenhouse as Affected by Methane and Organic Acids[J].Agricultural Water Management,2003,60(2):73-85
[12]Glaad Y K,Klous L Z.Hydraulic and Mechanical Properties of Drippers[C].Proceedings of the 2nd International Drip Irrigation Congress.1980,July 7-14
[13]韩权利,赵万华,丁玉成.滴灌用灌水器的现状及分析[J].节水灌溉,2003,(1):17-18
[14]孟桂祥,张鸣远,赵万华等.滴灌滴头内流场的数值模拟及流道优化设计[J].西安交通大学学报,2004,38(9):920-924
[15]王福军,王文娥.滴头流道CFD分析的研究进展与问题[J].农业工程学报,2006,22(7):188-192
[16]白杉.我国微灌设备现状和亟待革新的问题[J].排灌机械,2003,21(2):42-44
[17]许平.我国微灌技术和设备现状及市场前景分析[J].节水灌溉,2002,(1):33-36
[18]许平.我国节水灌溉技术与设备发展现状[C].中国节水农业科技论坛交流材料汇编,2004
[19]李光永.我国微灌技术的发展现状、潜力、差距与创新战略[C].中国节水农业科技论坛交流材料汇编,2004
[20]许迪,龚时宏,高本虎等.中国节水灌溉产品质量现状分析及改善对策[J].农业工程学报,2004,20(5):6-11
[21]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京:清华大学出版社,2004
[22]王福军,王文娥,魏海倪.CFD技术在未来数字节水农业中的作用[A].2004中国节水农业科技论坛论文集[C],山西,2004
[23]白杉.我国微灌设备现状及存在的问题[J].农机市场,2002,(8):29-31
[24]杜敏,范兴科,吴普特.滴头堵塞研究现状及预防措施[J].农机化研究,2004,(2):110-111
[25]仵峰,范永申,李辉等.地下滴灌灌水器堵塞研究[J].农业工程学报,2004,20(1):80-83
[26]张新燕,陈风,李华莹.单翼迷宫贴壁式滴灌带水力性能初步试验研究[J].干旱地区农业研究,2004,22(4):25-29
[27]魏正英,赵万华,唐一平等.滴灌灌水器迷宫流道主航道抗堵设计方法研究[J].农业工程学报,2005,21(6):1-7
[28]Palau S G,Arviza V G,Bralts V F.Hydraulic Flow Behavior through An In-Line Emitter Labyrinth Using CFD Teehniques[C]//ASAE/CSAE Meeting,Canada,ASAE/CSAE,2004:1-8
[29]张俊,洪军,赵万华等.基于正交试验的迷宫流道灌水器参数化设计研究[J].西安交通大学学报,2006,40(1):31-35
[30]张俊,赵万华,魏正英等.梯形流道灌水器流量定量设计研究[J].中国机械工程,2007,18(24):2297-3000
[31]潘伟,刘立兵,赵毅等.基于RP、RT技术的新型滴灌用滴头模具和产品的设计制造[J].模具技术,2001,(2):38-41
[32]王爱蕾.圆头内镶式系列滴灌管的研制[J].山东机械,2002,(1):15-17
[33]王瑞环,赵万华,杨来侠等.基于快速成形技术滴头的结构试验研究[J].西安交通大学学报,2003,37(5):542-545
[34]魏正英,唐一平,卢秉恒.滴灌管内嵌管状滴头的快速制造方法研究[J].农业工程学报,2003,19(2):55-58
[35]魏正英,王伊卿,卢秉恒.RP/RT技术在迷宫型滴头快速研制中的应用[J].西安理工大学学报,2001,17(3):257-260
[36]王建东,李光永.齿形迷宫流道结构参数对滴头水力性能影响的试验研究[J].第六次全国微灌大会论文汇编.2004,5:246-252
[37]王建东,李光永.迷宫流道结构对滴头抗堵性能影响的试验研究[J].第六次全国微灌大会论文汇编,2004,5:253-261
[38]张俊,赵万华,醋强一等.基于计算流体动力学的迷宫型灌水器流量预测[J].机械工程学报,2007,43(24):159-162
[39]张俊,魏公际,赵万华等.灌水器内圆弧形流道的液固两相流场分析[J].中国机械工程,2007,18(5):589-593
[40]傅德薰,马延文.计算流体力学[M].北京:高等教育出版社,2002
[41]蒋炎坤.CFD辅助发动机工程的理论与应用[M].北京:科学出版社,2004
[42]Courant R,Friedrichs K O,Levy H.On the Partial Difference Equations of Matllematical Physics[J].IBM Journal,1967,3:215-234
[43]傅维镳.流体力学数值模拟[M].北京:国防工业出版社,1993
[44]Murman E M,Cole J J.Calculation of Plane Steady Transonic Flows[J].AIAA,1971,9(1):114-121
[45]Jameson A.Numerical Calculation of the Three Dimensional Transonic Flows Over A Yawed Wing[C].Proceeding AIAA Computational Fluid Dynamics Conference,Palm Springs,1973,1
[46]魏淑贤,沈跃,黄延军.计算流体力学的发展及应用[J].河北理工学院学报,2005,27(2):115-117
[47]王东屏.CFD数值仿真建模技术研究及其在高速动车组中的验证[D].大连交通大学,2006
[48]Wang W E,Wang F J.Study on Unsteady Flow Though Labyrinth Emitter of Drip Irrigation[A].The 23rd IAHR Hydraulic Machinery Symposium |C].Yokohama,Japan,2006
[49]刘小民.黏性可压缩与不可压缩流动有限元数值计算方法及其应用[D].西安交通大学,1999
[50]王尚锦,刘小民,席光等.农灌用新型迷宫式滴头内流动特性分析[J].农业工程学报,2000,16(7):61-63
[51]王尚锦,刘小民,席光等.迷宫式滴头内流动的有限元数值分析[J].农业机械学报,2000,31(4):43-46
[52]魏青松,史玉升,董文楚等.新型灌水器快速自主开发数字试验研究[J].节水灌溉,2004,(2):10-14
[53]李云开,杨培岭,任树梅等.圆柱型迷宫式流道滴灌灌水器平面模型试验研究[J].农业机械学报,2006,37(4):48-51
[54]Salvador P G,Arviza V J,Bralts V F.Hydraulic Flow Behaviour through An In-line Emitter Labyrinth Using CFD Techniques[J].ASAE Paper,2004
[55]李永欣,李光永,邱象玉等.迷宫滴头水力特性的计算流体动力学模拟[J].农业工程学报,2005,21(3):12-16
[56]王虎,王旭东.滴灌施肥条件下土壤水分和速效磷的分布规律[J].西北农林科技大学学报,2007,35(5):141-146
[57]Talozi S A,Hilld J S.Simulating Emitter Clogging in A Micro-irrigation Subunit[J].Transactions of the ASAE,2001,44(6):1503-1509
[58]翟国亮,吕谋超等.微灌系统的堵塞及防治措施[J].农业工程学报,1999,15(1):144-147
[59]Adin A,Sacks M.Drip-Clogging Factors in Wastewater Irrigation[J].Journal of Irrigation and Drainage Division,ASCE,1991,(6):813-826
[60]席裕庚.预测控制[M].北京:国防工业出版社,1993
[61]舒迪前.预测控制系统及其应用[M].北京:机械工业出版社,2001
[62]Qin S J,Badgwell T A.An Overview of Nonlinear Model Predictive Control Applications[J].Nonlinear Predictive Control,2000,369-393
[63]李国发,王龙山,丁宁.基于进化神经网络外圆纵向磨削表面粗糙度的在线预测[J].中国机械工程,2005,16(3):223-226
[64]陈一梅,徐造林.基于神经网络的河道浅滩演变预测模型[J].水利学报,2002,(8):68-72
[65]赵闯,刘凯,李电生.基于广义回归神经网络的货运量预测[J].铁道学报,2004,26(1):12-15
[66]诸静.智能预测控制及其应用[M].杭州:浙江大学出版社,2002
[67]王永骥,涂健.神经元网络控制[M].北京:机械工业出版社,1982
[68]常涛,傅玮东,秦榕.基于LS-SVM的新疆沙尘暴预测研究[J].陕西气象,2007,(5):6-9
[69]徐晔,杜文莉,钱锋.基于核主元分析和最小二乘支持向量机的软测量建模[J].系统仿真学报,2007,19(17):3873-3918
[70]董华,杨世元,吴德会.基于模糊支持向量机的小批量生产质量智能预测方法[J].系统工程理论与实践,2007,27(3):98-104
[71]肖先勇,葛嘉,何德胜.基于支持向量机的中长期电力负荷组合预测[J].电力系统及其自动化学报,2008,20(1):84-88
[72]吴德会.基于最小二乘支持向量机的铣削加工表面粗糙度预测模型[J].中国机械工程,2007,18(7):838-847
[73]冯志刚,信太克规,王祈.基于最小二乘支持向量机预测器的传感器故障检测与数据恢复[J].仪器仪表学报,2007,28(2):193-197
[74]Miao Q,Wang S F.Nonlinear Model Predictive Control Based on Support Vector Regression[C].Proceedings of the First International Conference on Machine Learning and Cybernetics,Beijing,2002,1657-1661
[75]刘斌.非线性系统建模及预测控制若干问题研究[D].浙江大学,2004
[76]钟伟民.支持向量机在先进控制中的应用研究[D].浙江大学,2006
[77]吕春红,任泰安.微尺度流动研究的历史与现状[J].重庆电力高等专科学校学报,2007,12(1):11-14
[78]刘中春,侯吉瑞,岳湘安.微尺度流动界面现象及其流动边界条件分析[J].水动力学研究与进展,2006,21(3):339-346
[79]李战华,崔海航.微尺度流动特性[J].机械强度,2001,23(4):476-480
[80]尤学一,郑湘君,郑敬茹.微尺度流道内液体表观黏性系数的分子理论[J].物理学报,2007,56(4):2323-2329
[81]Poaer M C,Wiggert D C.Mechanics ofFluids[M].Beijing:Chinese Machine Press,2003
[82]魏正英,唐一平,赵万华等.滴灌灌水器迷宫流道结构与水力性能实验研究[J].农业机械学报,2005,36(12):51-55
[83]王虎,王旭东,杨莹.滴灌施肥条件下土壤铵氮分布规律的研究[J].干旱地区农业研究,2006,24(1):51-55
[84]GB/T 17187-1997 农业灌溉设备 滴头 技术规范和试验方法
[85]陈正宇,高志强,赵美香等.国内外常用滴(渗)管滴头供水规律试验研究[J].山西农业大学学报,1998,18(3):262-265
[86]张昊,许迪,程先军.几种地下滴灌(渗灌)灌水器性能的室内外试验研究[J].灌溉排水,1999,18(4):10-14
[87]Vapnik V N.The Natuer of Staitstical Learning Theory[M].Springer Verlag,New York,1995
[88]Vapnik V N.An Overview of Statistical Learning Theory[J].IEEE Transaction Neural Networks,1999,10(5):988-999
[89]Suykens J A K,Vandewalle J.Least Squares Support Vector Machine Classifiers[J].Neural Processing Letters,1999,9(3):293-300
[90]Suykens J A K,Vandewalle J.Sparse Least Squares Support Vector Machine Classifiers[C]//European Symposium on Artificial Neural Networks.Bruges Belgium,2000:37-42
[91]Vapnik V N,Lemer A.Pattern Recognition Using Generalized Portrait Method[J].Autom Remote Control,1963,24
[92]Vapnik V N,Chervonenks A Y.On the Uniform Convergence of Relative Frequencies of Events to Their Probabilities[J].Theory Probab,1971,16(4),264-280
[93]Vapnik V N,Golowich S E,Smola A.Support Vector Method for Function Approximation,Regression,and Signal Processing.Advances in Neural Information Processing System[J].MIT Press,Cambridge,1997,9
[94]Vapnik V N.Statistical Leanring Theory[M].New York,1998
[95]Kennedy J,Eberhart R C.Particle Swarm Optimization[C].Proc IEEE Int Conf Neural Networks.Piscataway,NJ:IEEE Press,1995,1942-1948
[96]Shi Y,Eberhart R.A Modified Particle Swarm Optimizer[C].In:IEEE World Congress on Computational Intelligence,1998:69-73
[97]董瑶,潘国峰,夏克文等.一种改进的LS-SVM算法及其应用[J].石油地球物理勘探,2007,42(6):673-677
[98]王文娥,王福军,严海军.迷宫滴头CFD分析方法研究[J].农业机械学报,2006,37(10):70-73
[99]王文娥,王福军.片状迷宫滴头中悬浮颗粒浓度分布规律数值分析[J].农业工程学报,2007,23(3):1-6
[100]魏青松,史玉升,董文楚等.滴灌灌水器流体流动机理及其数字可视化研究[J].中国农村水利水电,2004,(3):1-4
[101]刘永兵,陈纪忠,阳永荣.环管反应器内液固两相流的数值模拟[J].高校化学工程学报,2007,21(5):790-796
[102]曹国强.基于并行计算技术的离心式叶片泵流场数值模拟及三维设计软件开发[D].辽宁工程技术大学,2005
[103]陈次昌等.两相流泵的理论与设计tM].北京:兵器工业出版社,1994
[104]吴宝贵.基于仿真分析的复杂机械产品多学科设计优化方法研究[D].大连理工大学,2008
[105]Sobieski J S.Multidisciplinary Aerospace Design Optimization:Survey of Recent Development[R].AIAA96-0711,1996
[106]AIAA Technical Committee.MDO White Paper on Current State of The Art[R].AIAA,Washington,DC,January 15,1991
[107]马明旭,王成恩,张嘉易等.复杂产品多学科设计优化技术[J].机械工程学报,2008,44(6):15-26
[108]赵立峰.离心通风机的流场模拟及优化设计[D].大连交通大学,2005
[109]安亦然,丁祎,张群峰等.CFD软件在汽车设计中的应用[J].水动力学研究与进展,2004,19(1):6-12
[110]李光永,王建东,付敬娥.滴头放大模型相似性试验探索性的研究[J].第六次全国微灌大会论文汇编,2004,5:262-266
[111]杜敏,吴普特,范兴科.Pro/ENGINEER软件在滴灌产品研发中的应用[J].机械研究与应用,2004,17(1):88-89
[112]张俊,赵万华,粟晓玲等.微灌长流道灌水器结构特性的研究综述[J].农业工程学报,2005,21(1):182-185
[113]Karmeli D.Classification and Flow Regime Analysis of Drippers[J].Journal of Agricultural Engineering Research,1977,22:165-173
[114]Tal S,Zur B.Flow Regime in Helical Long-path Emitters[J].Journal of Irrigation and Drainage Division,ASCE,1980,106(IR1):27-35
[115]Ozekiei B,Ronald S.Analysis of Pressure Losses in Tortuous-Path Emitters[M].America Society of Agriculture Engineering,1991,112-115
[116]方部玲,赵德菱.圆片式迷宫长流道滴头的研究[C].耕作机械学会论文集,1997,145-150
[117]Camp C R.Subsurface Drip Irrigation:a Review[J].Transactions of the ASAE,1995,(5):1353-1367
[118]Nakayama F S,Bucks D A.Water Quality in Drip/Trickle Irrigation:a Review[J].Irrigation Science.1991,(12):187-192
[119]Wu L.Design Considerations of Drip Irrigation Systems[C].ICID,Fifteenth Congress,1993:1-30
[120]任明星,李邦盛,杨闯等.微尺度型腔内液态金属流动规律模拟研究[J].物理学报,2008,57(8):5063-5069
[121]Vapnik V N,Chervonenks A.Theory of Pattern Recognition[M].Nauka,Moscow(in Russian),1974
[122]Vapnik V N,Sterin A M.On Structural Risk Minimization of Overall Risk In a Problem of Pattern Recognition[J].Autom Remote Control,1977,10
[123]Vapnik V N,Stefanynk A R.Nonparametric Methods for Estimating Probability Densities[J].Autom Remote Control,1978,8
[124]Vapnik V N著,张学工译.统计学习理论的本质[M],北京:清华大学出版社,2000
[125]Vapnik V N著,许建安,张学工译.统计学习理论[M],北京:电子工业出版社,2004
[126]Meadows E S et al Model Predictive Control[M].In Michael A.Henson and Dale E.Seborg(Editors),Nonlinear Process Control,Prentice Hall,1997
[127]王荣莲,龚时宏,王建东等.地下滴灌抗负压堵塞的试验研究[J].灌溉排水学报,2005,24(5):18-21
[128]薛兆鹏.基于流场和结构优化的搅拌桨设计/制造集成技术研究[D].天津大学,2003
[129]毕凤荣,冷传刚,葛维晶.利用UG二次开发进行参数化设计关键问题的研究[J].小型内燃机与摩托车,2008,37(3):25-26
[130]缪丽燕,邢建国.基于UG二次开发的零件设计可重用技术研究[J].机械,2008,35(4):41-45
[131]李如忠.利用UG NX二次开发技术实现批量孔的创建[J].机械研究与应用,2008,21(3):97-100
[132]黄勇,张博林,薛运锋.UG二次开发与数据库应用基础与典型范例[M].北京:电子工业出版社,2008
[133]赵韩,朱方方,宋小波等.基于UG的通用零部件设计系统[J].机床与液压,2007,35(12):60-63
[134]梁刚,黄放等.基于UG的特征线提取的二次开发技术研究[J].贵州工业大学学报,2007,37(2):41-44
[135]冯胜强,胡绳荪,杜乃成等.基于UG的弧焊机器人离线编程系统的设备建模[J].焊接学报,2008,29(4):89-92
[136]张晓军,唐霖,王航宇等.UG二次开发在炮管混合膛线电解加工中的应用[J].工程设计学报,2008,15(4):259-262
[137]张进成,李开林.基于知识工程的UG二次开发[J].计算机工程与设计,2008,29(9):2389-2391
[138]王彬,廖敦明,陈立亮等.基于UG的铸钢件浇铸系统CAD二次开发[J].中国机械工程,2006,18(增刊):213-215
[139]朱德兰,吴普特,王艳群等.滴头设计工作压力计算方法研究[J].排灌机械,2005,23(5):31-34
[140]刘春景,王科元.气助式静电喷头雾化性能和荷电效果试验[J].浙江林学院学报,2009,26(1):116-121
[141]刘春景,郑加强,王科元.静电喷头雾化特性预测模型研究[J].农业机械学报,2009,40(4):65-70
[2]山仑,康绍忠,吴普特.中国节水农业[M].北京:中国农业出版社,2005
[3]薛亮.中国节水农业理论与实践[M].北京:中国农业出版社,2002
[4]王增发,洪小康.试论我国的节水灌溉技术[J].西北大学学报(自然科学版),1998,28(5):451-454
[5]王增发.我国水资源的供求关系与农业节水[J].西安理工大学学报,1996,12(3):263-266
[6]梅旭荣,蔡典雄,杨正礼等.节水高效农业理论与技术[M].北京:中国农业科技出版社,2004
[7]李云开.滴头分型流道设计及其流动特性的试验研究与数值模拟[D].中国农业大学,2005
[8]中国水利年鉴编撰委员会.中国水利年鉴[C].北京:中国水利出版社,2003
[9]姚振宪,何松林.滴灌设备与滴灌系统规划设计[M].北京:中国农业出版社,1999
[10]D.戈德堡,B.戈内特,D.里蒙等.滴灌原理与应用[M].西世良,薛克宗等译.北京:中国农业机械出版社,1984
[11]De Kreij C,Burg A M,Runia W T.Drip lrrigation Emitter Clogging in Dutch Greenhouse as Affected by Methane and Organic Acids[J].Agricultural Water Management,2003,60(2):73-85
[12]Glaad Y K,Klous L Z.Hydraulic and Mechanical Properties of Drippers[C].Proceedings of the 2nd International Drip Irrigation Congress.1980,July 7-14
[13]韩权利,赵万华,丁玉成.滴灌用灌水器的现状及分析[J].节水灌溉,2003,(1):17-18
[14]孟桂祥,张鸣远,赵万华等.滴灌滴头内流场的数值模拟及流道优化设计[J].西安交通大学学报,2004,38(9):920-924
[15]王福军,王文娥.滴头流道CFD分析的研究进展与问题[J].农业工程学报,2006,22(7):188-192
[16]白杉.我国微灌设备现状和亟待革新的问题[J].排灌机械,2003,21(2):42-44
[17]许平.我国微灌技术和设备现状及市场前景分析[J].节水灌溉,2002,(1):33-36
[18]许平.我国节水灌溉技术与设备发展现状[C].中国节水农业科技论坛交流材料汇编,2004
[19]李光永.我国微灌技术的发展现状、潜力、差距与创新战略[C].中国节水农业科技论坛交流材料汇编,2004
[20]许迪,龚时宏,高本虎等.中国节水灌溉产品质量现状分析及改善对策[J].农业工程学报,2004,20(5):6-11
[21]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京:清华大学出版社,2004
[22]王福军,王文娥,魏海倪.CFD技术在未来数字节水农业中的作用[A].2004中国节水农业科技论坛论文集[C],山西,2004
[23]白杉.我国微灌设备现状及存在的问题[J].农机市场,2002,(8):29-31
[24]杜敏,范兴科,吴普特.滴头堵塞研究现状及预防措施[J].农机化研究,2004,(2):110-111
[25]仵峰,范永申,李辉等.地下滴灌灌水器堵塞研究[J].农业工程学报,2004,20(1):80-83
[26]张新燕,陈风,李华莹.单翼迷宫贴壁式滴灌带水力性能初步试验研究[J].干旱地区农业研究,2004,22(4):25-29
[27]魏正英,赵万华,唐一平等.滴灌灌水器迷宫流道主航道抗堵设计方法研究[J].农业工程学报,2005,21(6):1-7
[28]Palau S G,Arviza V G,Bralts V F.Hydraulic Flow Behavior through An In-Line Emitter Labyrinth Using CFD Teehniques[C]//ASAE/CSAE Meeting,Canada,ASAE/CSAE,2004:1-8
[29]张俊,洪军,赵万华等.基于正交试验的迷宫流道灌水器参数化设计研究[J].西安交通大学学报,2006,40(1):31-35
[30]张俊,赵万华,魏正英等.梯形流道灌水器流量定量设计研究[J].中国机械工程,2007,18(24):2297-3000
[31]潘伟,刘立兵,赵毅等.基于RP、RT技术的新型滴灌用滴头模具和产品的设计制造[J].模具技术,2001,(2):38-41
[32]王爱蕾.圆头内镶式系列滴灌管的研制[J].山东机械,2002,(1):15-17
[33]王瑞环,赵万华,杨来侠等.基于快速成形技术滴头的结构试验研究[J].西安交通大学学报,2003,37(5):542-545
[34]魏正英,唐一平,卢秉恒.滴灌管内嵌管状滴头的快速制造方法研究[J].农业工程学报,2003,19(2):55-58
[35]魏正英,王伊卿,卢秉恒.RP/RT技术在迷宫型滴头快速研制中的应用[J].西安理工大学学报,2001,17(3):257-260
[36]王建东,李光永.齿形迷宫流道结构参数对滴头水力性能影响的试验研究[J].第六次全国微灌大会论文汇编.2004,5:246-252
[37]王建东,李光永.迷宫流道结构对滴头抗堵性能影响的试验研究[J].第六次全国微灌大会论文汇编,2004,5:253-261
[38]张俊,赵万华,醋强一等.基于计算流体动力学的迷宫型灌水器流量预测[J].机械工程学报,2007,43(24):159-162
[39]张俊,魏公际,赵万华等.灌水器内圆弧形流道的液固两相流场分析[J].中国机械工程,2007,18(5):589-593
[40]傅德薰,马延文.计算流体力学[M].北京:高等教育出版社,2002
[41]蒋炎坤.CFD辅助发动机工程的理论与应用[M].北京:科学出版社,2004
[42]Courant R,Friedrichs K O,Levy H.On the Partial Difference Equations of Matllematical Physics[J].IBM Journal,1967,3:215-234
[43]傅维镳.流体力学数值模拟[M].北京:国防工业出版社,1993
[44]Murman E M,Cole J J.Calculation of Plane Steady Transonic Flows[J].AIAA,1971,9(1):114-121
[45]Jameson A.Numerical Calculation of the Three Dimensional Transonic Flows Over A Yawed Wing[C].Proceeding AIAA Computational Fluid Dynamics Conference,Palm Springs,1973,1
[46]魏淑贤,沈跃,黄延军.计算流体力学的发展及应用[J].河北理工学院学报,2005,27(2):115-117
[47]王东屏.CFD数值仿真建模技术研究及其在高速动车组中的验证[D].大连交通大学,2006
[48]Wang W E,Wang F J.Study on Unsteady Flow Though Labyrinth Emitter of Drip Irrigation[A].The 23rd IAHR Hydraulic Machinery Symposium |C].Yokohama,Japan,2006
[49]刘小民.黏性可压缩与不可压缩流动有限元数值计算方法及其应用[D].西安交通大学,1999
[50]王尚锦,刘小民,席光等.农灌用新型迷宫式滴头内流动特性分析[J].农业工程学报,2000,16(7):61-63
[51]王尚锦,刘小民,席光等.迷宫式滴头内流动的有限元数值分析[J].农业机械学报,2000,31(4):43-46
[52]魏青松,史玉升,董文楚等.新型灌水器快速自主开发数字试验研究[J].节水灌溉,2004,(2):10-14
[53]李云开,杨培岭,任树梅等.圆柱型迷宫式流道滴灌灌水器平面模型试验研究[J].农业机械学报,2006,37(4):48-51
[54]Salvador P G,Arviza V J,Bralts V F.Hydraulic Flow Behaviour through An In-line Emitter Labyrinth Using CFD Techniques[J].ASAE Paper,2004
[55]李永欣,李光永,邱象玉等.迷宫滴头水力特性的计算流体动力学模拟[J].农业工程学报,2005,21(3):12-16
[56]王虎,王旭东.滴灌施肥条件下土壤水分和速效磷的分布规律[J].西北农林科技大学学报,2007,35(5):141-146
[57]Talozi S A,Hilld J S.Simulating Emitter Clogging in A Micro-irrigation Subunit[J].Transactions of the ASAE,2001,44(6):1503-1509
[58]翟国亮,吕谋超等.微灌系统的堵塞及防治措施[J].农业工程学报,1999,15(1):144-147
[59]Adin A,Sacks M.Drip-Clogging Factors in Wastewater Irrigation[J].Journal of Irrigation and Drainage Division,ASCE,1991,(6):813-826
[60]席裕庚.预测控制[M].北京:国防工业出版社,1993
[61]舒迪前.预测控制系统及其应用[M].北京:机械工业出版社,2001
[62]Qin S J,Badgwell T A.An Overview of Nonlinear Model Predictive Control Applications[J].Nonlinear Predictive Control,2000,369-393
[63]李国发,王龙山,丁宁.基于进化神经网络外圆纵向磨削表面粗糙度的在线预测[J].中国机械工程,2005,16(3):223-226
[64]陈一梅,徐造林.基于神经网络的河道浅滩演变预测模型[J].水利学报,2002,(8):68-72
[65]赵闯,刘凯,李电生.基于广义回归神经网络的货运量预测[J].铁道学报,2004,26(1):12-15
[66]诸静.智能预测控制及其应用[M].杭州:浙江大学出版社,2002
[67]王永骥,涂健.神经元网络控制[M].北京:机械工业出版社,1982
[68]常涛,傅玮东,秦榕.基于LS-SVM的新疆沙尘暴预测研究[J].陕西气象,2007,(5):6-9
[69]徐晔,杜文莉,钱锋.基于核主元分析和最小二乘支持向量机的软测量建模[J].系统仿真学报,2007,19(17):3873-3918
[70]董华,杨世元,吴德会.基于模糊支持向量机的小批量生产质量智能预测方法[J].系统工程理论与实践,2007,27(3):98-104
[71]肖先勇,葛嘉,何德胜.基于支持向量机的中长期电力负荷组合预测[J].电力系统及其自动化学报,2008,20(1):84-88
[72]吴德会.基于最小二乘支持向量机的铣削加工表面粗糙度预测模型[J].中国机械工程,2007,18(7):838-847
[73]冯志刚,信太克规,王祈.基于最小二乘支持向量机预测器的传感器故障检测与数据恢复[J].仪器仪表学报,2007,28(2):193-197
[74]Miao Q,Wang S F.Nonlinear Model Predictive Control Based on Support Vector Regression[C].Proceedings of the First International Conference on Machine Learning and Cybernetics,Beijing,2002,1657-1661
[75]刘斌.非线性系统建模及预测控制若干问题研究[D].浙江大学,2004
[76]钟伟民.支持向量机在先进控制中的应用研究[D].浙江大学,2006
[77]吕春红,任泰安.微尺度流动研究的历史与现状[J].重庆电力高等专科学校学报,2007,12(1):11-14
[78]刘中春,侯吉瑞,岳湘安.微尺度流动界面现象及其流动边界条件分析[J].水动力学研究与进展,2006,21(3):339-346
[79]李战华,崔海航.微尺度流动特性[J].机械强度,2001,23(4):476-480
[80]尤学一,郑湘君,郑敬茹.微尺度流道内液体表观黏性系数的分子理论[J].物理学报,2007,56(4):2323-2329
[81]Poaer M C,Wiggert D C.Mechanics ofFluids[M].Beijing:Chinese Machine Press,2003
[82]魏正英,唐一平,赵万华等.滴灌灌水器迷宫流道结构与水力性能实验研究[J].农业机械学报,2005,36(12):51-55
[83]王虎,王旭东,杨莹.滴灌施肥条件下土壤铵氮分布规律的研究[J].干旱地区农业研究,2006,24(1):51-55
[84]GB/T 17187-1997 农业灌溉设备 滴头 技术规范和试验方法
[85]陈正宇,高志强,赵美香等.国内外常用滴(渗)管滴头供水规律试验研究[J].山西农业大学学报,1998,18(3):262-265
[86]张昊,许迪,程先军.几种地下滴灌(渗灌)灌水器性能的室内外试验研究[J].灌溉排水,1999,18(4):10-14
[87]Vapnik V N.The Natuer of Staitstical Learning Theory[M].Springer Verlag,New York,1995
[88]Vapnik V N.An Overview of Statistical Learning Theory[J].IEEE Transaction Neural Networks,1999,10(5):988-999
[89]Suykens J A K,Vandewalle J.Least Squares Support Vector Machine Classifiers[J].Neural Processing Letters,1999,9(3):293-300
[90]Suykens J A K,Vandewalle J.Sparse Least Squares Support Vector Machine Classifiers[C]//European Symposium on Artificial Neural Networks.Bruges Belgium,2000:37-42
[91]Vapnik V N,Lemer A.Pattern Recognition Using Generalized Portrait Method[J].Autom Remote Control,1963,24
[92]Vapnik V N,Chervonenks A Y.On the Uniform Convergence of Relative Frequencies of Events to Their Probabilities[J].Theory Probab,1971,16(4),264-280
[93]Vapnik V N,Golowich S E,Smola A.Support Vector Method for Function Approximation,Regression,and Signal Processing.Advances in Neural Information Processing System[J].MIT Press,Cambridge,1997,9
[94]Vapnik V N.Statistical Leanring Theory[M].New York,1998
[95]Kennedy J,Eberhart R C.Particle Swarm Optimization[C].Proc IEEE Int Conf Neural Networks.Piscataway,NJ:IEEE Press,1995,1942-1948
[96]Shi Y,Eberhart R.A Modified Particle Swarm Optimizer[C].In:IEEE World Congress on Computational Intelligence,1998:69-73
[97]董瑶,潘国峰,夏克文等.一种改进的LS-SVM算法及其应用[J].石油地球物理勘探,2007,42(6):673-677
[98]王文娥,王福军,严海军.迷宫滴头CFD分析方法研究[J].农业机械学报,2006,37(10):70-73
[99]王文娥,王福军.片状迷宫滴头中悬浮颗粒浓度分布规律数值分析[J].农业工程学报,2007,23(3):1-6
[100]魏青松,史玉升,董文楚等.滴灌灌水器流体流动机理及其数字可视化研究[J].中国农村水利水电,2004,(3):1-4
[101]刘永兵,陈纪忠,阳永荣.环管反应器内液固两相流的数值模拟[J].高校化学工程学报,2007,21(5):790-796
[102]曹国强.基于并行计算技术的离心式叶片泵流场数值模拟及三维设计软件开发[D].辽宁工程技术大学,2005
[103]陈次昌等.两相流泵的理论与设计tM].北京:兵器工业出版社,1994
[104]吴宝贵.基于仿真分析的复杂机械产品多学科设计优化方法研究[D].大连理工大学,2008
[105]Sobieski J S.Multidisciplinary Aerospace Design Optimization:Survey of Recent Development[R].AIAA96-0711,1996
[106]AIAA Technical Committee.MDO White Paper on Current State of The Art[R].AIAA,Washington,DC,January 15,1991
[107]马明旭,王成恩,张嘉易等.复杂产品多学科设计优化技术[J].机械工程学报,2008,44(6):15-26
[108]赵立峰.离心通风机的流场模拟及优化设计[D].大连交通大学,2005
[109]安亦然,丁祎,张群峰等.CFD软件在汽车设计中的应用[J].水动力学研究与进展,2004,19(1):6-12
[110]李光永,王建东,付敬娥.滴头放大模型相似性试验探索性的研究[J].第六次全国微灌大会论文汇编,2004,5:262-266
[111]杜敏,吴普特,范兴科.Pro/ENGINEER软件在滴灌产品研发中的应用[J].机械研究与应用,2004,17(1):88-89
[112]张俊,赵万华,粟晓玲等.微灌长流道灌水器结构特性的研究综述[J].农业工程学报,2005,21(1):182-185
[113]Karmeli D.Classification and Flow Regime Analysis of Drippers[J].Journal of Agricultural Engineering Research,1977,22:165-173
[114]Tal S,Zur B.Flow Regime in Helical Long-path Emitters[J].Journal of Irrigation and Drainage Division,ASCE,1980,106(IR1):27-35
[115]Ozekiei B,Ronald S.Analysis of Pressure Losses in Tortuous-Path Emitters[M].America Society of Agriculture Engineering,1991,112-115
[116]方部玲,赵德菱.圆片式迷宫长流道滴头的研究[C].耕作机械学会论文集,1997,145-150
[117]Camp C R.Subsurface Drip Irrigation:a Review[J].Transactions of the ASAE,1995,(5):1353-1367
[118]Nakayama F S,Bucks D A.Water Quality in Drip/Trickle Irrigation:a Review[J].Irrigation Science.1991,(12):187-192
[119]Wu L.Design Considerations of Drip Irrigation Systems[C].ICID,Fifteenth Congress,1993:1-30
[120]任明星,李邦盛,杨闯等.微尺度型腔内液态金属流动规律模拟研究[J].物理学报,2008,57(8):5063-5069
[121]Vapnik V N,Chervonenks A.Theory of Pattern Recognition[M].Nauka,Moscow(in Russian),1974
[122]Vapnik V N,Sterin A M.On Structural Risk Minimization of Overall Risk In a Problem of Pattern Recognition[J].Autom Remote Control,1977,10
[123]Vapnik V N,Stefanynk A R.Nonparametric Methods for Estimating Probability Densities[J].Autom Remote Control,1978,8
[124]Vapnik V N著,张学工译.统计学习理论的本质[M],北京:清华大学出版社,2000
[125]Vapnik V N著,许建安,张学工译.统计学习理论[M],北京:电子工业出版社,2004
[126]Meadows E S et al Model Predictive Control[M].In Michael A.Henson and Dale E.Seborg(Editors),Nonlinear Process Control,Prentice Hall,1997
[127]王荣莲,龚时宏,王建东等.地下滴灌抗负压堵塞的试验研究[J].灌溉排水学报,2005,24(5):18-21
[128]薛兆鹏.基于流场和结构优化的搅拌桨设计/制造集成技术研究[D].天津大学,2003
[129]毕凤荣,冷传刚,葛维晶.利用UG二次开发进行参数化设计关键问题的研究[J].小型内燃机与摩托车,2008,37(3):25-26
[130]缪丽燕,邢建国.基于UG二次开发的零件设计可重用技术研究[J].机械,2008,35(4):41-45
[131]李如忠.利用UG NX二次开发技术实现批量孔的创建[J].机械研究与应用,2008,21(3):97-100
[132]黄勇,张博林,薛运锋.UG二次开发与数据库应用基础与典型范例[M].北京:电子工业出版社,2008
[133]赵韩,朱方方,宋小波等.基于UG的通用零部件设计系统[J].机床与液压,2007,35(12):60-63
[134]梁刚,黄放等.基于UG的特征线提取的二次开发技术研究[J].贵州工业大学学报,2007,37(2):41-44
[135]冯胜强,胡绳荪,杜乃成等.基于UG的弧焊机器人离线编程系统的设备建模[J].焊接学报,2008,29(4):89-92
[136]张晓军,唐霖,王航宇等.UG二次开发在炮管混合膛线电解加工中的应用[J].工程设计学报,2008,15(4):259-262
[137]张进成,李开林.基于知识工程的UG二次开发[J].计算机工程与设计,2008,29(9):2389-2391
[138]王彬,廖敦明,陈立亮等.基于UG的铸钢件浇铸系统CAD二次开发[J].中国机械工程,2006,18(增刊):213-215
[139]朱德兰,吴普特,王艳群等.滴头设计工作压力计算方法研究[J].排灌机械,2005,23(5):31-34
[140]刘春景,王科元.气助式静电喷头雾化性能和荷电效果试验[J].浙江林学院学报,2009,26(1):116-121
[141]刘春景,郑加强,王科元.静电喷头雾化特性预测模型研究[J].农业机械学报,2009,40(4):65-70