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Anti-block designing method of drip irrigation tool based on two-phase simulated flow

A design method and emitter technology, applied in botany equipment and methods, instruments, calculations, etc., can solve the problems of flow field characteristic error, deviation, emitter clogging, hindering the application and development of drip irrigation technology, etc., and achieve anti-clogging performance Improvement, anti-clogging ability, and reduction of trial production costs

Inactive Publication Date: 2006-08-16
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0002] The blockage of the emitter has always been the biggest obstacle hindering the application and development of drip irrigation technology
This method ignores the existence of clogged media, so there are errors in the simulated flow field characteristics. In addition, artificial indirect analysis may also lead to further deviations

Method used

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  • Anti-block designing method of drip irrigation tool based on two-phase simulated flow
  • Anti-block designing method of drip irrigation tool based on two-phase simulated flow
  • Anti-block designing method of drip irrigation tool based on two-phase simulated flow

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0026] The steps of the inventive method are as figure 1 As shown, the following takes the diamond-shaped labyrinth flow channel of the drip irrigation emitter as an example to illustrate the steps of optimizing the flow channel structure:

[0027] 1. Construct the analysis model of two-phase flow in labyrinth channel of emitter

[0028] like figure 2 As shown, use three-dimensional modeling software (such as UG or PROE software) to realize the geometric modeling of the flow channel, according to figure 2 The three-dimensional model of the labyrinth flow channel constructed by the flow channel size parameters shown is as follows: image 3 shown.

[0029] 2. Carry out mesh division and boundary condition setting

[0030] Because the flow channel has no warping radian, but the size is small and there are a lot of corners, the present invention uses fin...

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Abstract

An anti-blocking design method based on two-phase stream simulation for the drip irrigator features that according to the mathematical simulation about the two-phase stream in the flow field of said drip irrigator, the region in the flow channel, where the solid is easily deposited, is analyzed out and the influence of the flow channel structure to the delivery and deposition of solid is further analyzed. On this basis, the structure parameters of flow channel are modified and said simulation is repeated until no obvious deposition of solid.

Description

technical field [0001] The invention belongs to the technical field of agricultural water-saving irrigation, and in particular relates to an anti-clogging design method of a drip irrigation emitter based on two-phase flow simulation. Background technique [0002] The blockage of emitters has always been the biggest obstacle hindering the application and development of drip irrigation technology. According to the cause of clogging, there are physical clogging caused by solid particles, chemical clogging caused by insoluble salts generated by chemical reactions, and biological clogging caused by microbial activity and growth. Aiming at various clogging problems, many experts at home and abroad have conducted a lot of scientific research for a long time to reveal the clogging mechanism of emitters and find effective clogging control and prevention methods. The existing blockage solution is mainly to strengthen water purification and filtration, or to introduce some reagents (s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G25/00A01G25/02G06F17/50
CPCY02A40/22
Inventor 史玉升魏青松董文楚黄树槐芦刚聂磊孙宏
Owner HUAZHONG UNIV OF SCI & TECH
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