滴头
- Dripper;water dropper
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滴灌具有淋洗脱盐作用,即盐分积累到湿润锋附近,滴头下面土壤的含盐量相对较低。
Drip irrigation has the function of taking off salinity , which means that the soil salt content under the water dropper is relatively low as the salts tend to be accumulated at the wetted front .
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迷宫滴头CFD分析方法研究
Study on CFD Method for Flow Simulation in Labyrinth Emitter
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滴头流道CFD分析的研究进展与问题
Research progress in analysis of flow passage in irrigation emitters using Computational Fluid Dynamics techniques
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KD型大流量系列孔口滴头的研制
The Development of Orifice Emitter of Model KD Series with Large Discharge
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基于RP技术的滴灌用灌水器滴头的快速定型
Using . Rapid finalization of irrigator dripper in drip-irrigation by virtue of RP technique
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基于RP、RT技术的新型滴灌用滴头模具和产品的设计制造
Design and Manufacturing of A New type Drip Irrigation Emitter Mould and Product Based on RP , RT Techniques
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应用Matlab软件中的多元线性回归算法对所得试验数据进行了回归分析,得出了8种滴头的压力流量公式和回归曲线图。
Moreover , experimental data are analyzed with multivariable linear regression in MATLAB , formulas of pressure versus flow and regression plots for 8 different emitters are induced from the regression analyses .
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介绍了使用CAD技术进行新型内镶式滴灌管滴头的设计,并应用先进的RP、RT技术进行初级产品生产的方法。
The paper introduces a new method that uses CAD techniques to design the new kind emitter and applies advanced RP , RT techniques to produce primary product .
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详细论述了根据滴头结构设计生成其结构CAD模型,并应用快速成型制造技术制作滴头原型和其一体化实验原型。
The generation of emitter structural CAD model according to emitter structure design , and the building of emitter prototypes and its integrative experimental model based on rapid prototyping manufacturing ( RP M ) are introduced in detail .
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以农用滴灌滴头的模具设计为例,介绍了使用Pro/ENGINEER、RP和RT技术设计制造模具的工艺过程。
According to the design of an agricultural irrigation emitter mould , the paper introduced the process that uses Pro / ENGINEER technique and advanced RP , RT techniques to manufacture mould .
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在参考ISO抗堵塞实验国际标准草案的基础上,制定了抗堵塞实验方案,研究了齿形流道结构参数对滴头抗堵塞性能的影响。
Anti-clogging experimental scheme was established on the basis of referring to ISO Anti - clogging experimental scheme which is still under discussion . How these structural parameters affected anti - clogging ability of dentate emitters was studied .
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RT技术的应用不仅能更快更好地解决滴头中常见的各种问题,而且还在产品设计制造实践中提高了RP、RT技术的应用水平。
The application of RP , RT techniques can not only solves all kinds of problems in emitter more quickly but also develops applied level of RP , RT techniques during the production of actual production .
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再应用快速制模(RT)技术进行滴头快速喷涂模具的制造,用以滴头的试制,使滴头可直接用于节水灌溉实际中。
Then rapid tooling ( RT ) technique is used to manufacture rapid spray mold of labyrinth dripper which can be used in trial production of dripper , thus , making the drippers be directly used in drip irrigation .
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研究了大田土壤点源滴灌施肥条件下滴头流量(q)和灌水施肥量(Q)对土壤NH4+-N扩散分布的影响,分析水平和垂直两方向上NH4+-N含量的变化规律。
The experiment was conducted to investigate the influence of dripping end flow and irrigation volume on the distribution pattern of NH_4 ~ + - N in soil , and to analyze the change rules of NH_4 ~ + - N concentration in horizontal and vertical directions .
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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。
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 .
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得出了利用微咸水滴灌能在滴头附近形成一个较高含水率,且含盐量较低的区域(0~15cm),能为作物提供一个良好的水盐环境。
The use of brackish water can form a high moisture content and low salinity region near the drip irrigation emitter , which can provide a good crop of salt-water environment . 2 .
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结果:最佳成型工艺为贮药槽药液高度3cm、滴头温度80℃、滴距5cm、冷凝液温度15℃。
Results The optimum forming technics could be seen as follows , the height of the drug storage tank was 3 cm , the temperature of drops was 80 ℃, the dropping distance was 5 cm and the temperature of the liquor condensate was 15 ℃ .
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基于快速成形技术滴头的结构试验研究
Experimental Study of the Water-Saving Emitter Structure Based on Rapid Prototyping
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迷宫流道滴头抗堵塞试验研究初探
The Research on Anti - clogging Performance of Drip emitters TESTING
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点源滴灌滴头流量与湿润体关系研究
Relationships between dripper discharge and soil wetting pattern for drip irrigation
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葡萄滴灌系统中毛管及微管滴头的设计
Design of lateral and micro-pipe emitters in drip irrigation system for grapes
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迷宫式滴头内流动的有限元数值分析
Numerical Simulation of Flows inside a Drip Faucet by Finite Element Method
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点源滴灌滴头流量设计模式的试验研究
Experimental Research about Dripper Discharge Design Mode for Point Source Drip Irrigation
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滴头堵塞研究现状及预防措施
Research on the Clogging of Dripper and Measure of Prevention
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RP/RT技术在迷宫型滴头快速研制中的应用
Application of RP / RT Technique in Rapid Development of Labyrinth Dripper
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试论我国滴头性能技术指标和结构型式的选择问题
The Selection of Dripper 's Technical Performance Parameters and Structure in China
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微灌滴头设计工作压力取值理论研究
Theory on the calculation of operation pressure of micro-irrigation emitters
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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。
Multidisciplinary design optimization idea is proposed for drip irrigation emitter design .
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滴头堵塞及其机理的初步试验研究
Preliminary investigation of the emitters blockage and its mechanism
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压力补偿滴头流道流场的数值模拟与补偿元件分析
Pressure Compensating Emitter Numerical Simulation of Flow Field and Analysis of Compensation Component