Visualization device for water jet breaking behavior of external flow field of high-dispersion horizontal nozzle

Abstract

The invention relates to a visualization device for a water jet breaking behavior of an external flow field of a high-dispersion horizontal nozzle. The visualization device comprises a water tank, a pipeline and a nozzle which are connected in sequence, wherein a light source is arranged on one side of a jet water column sprayed out of the nozzle; a black curtain is arranged behind the light source; a calibration plate and a meter ruler are fixed on the curtain; a high-speed camera I is arranged on the other side of the jet water column sprayed out of the nozzle; a high-speed camera II is arranged above the jet water column sprayed out of the nozzle; the high-speed camera I and the high-speed camera II are connected to a computer through a synchronizer. According to the device, observationand shooting of an asymmetric jet flow field are realized, the rule that a nozzle outlet structure influences the development of a jet surface can be obtained, the defect that a conventional high-speed shooting method can only be used for two-dimensional plane shooting is overcome, and a new means is provided for research of a jet breaking mechanism.

Description

technical field [0001] The invention relates to a water jet breaking behavior visualization device in the outer flow field of a high-dispersion horizontal nozzle, which is suitable for multi-dimensional high-speed photographic visualization shooting of an asymmetric water jet flow field, and can be used for research on jet breaking behavior under various outlet dispersion conditions. Background technique [0002] With the development of agriculture and the need of water saving, sprinkler irrigation technology, as one of the measures to increase production and save water in agricultural production, is being paid more and more attention by people. The structure of the sprinkler head directly affects its hydraulic performance and then affects the efficiency of sprinkler irrigation. Optimizing the design of the sprinkler head structure is the focus of improving the sprinkler irrigation effect. Crushing locomotion behavior was studied. [0003] In order to improve the sprinkler ...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the sprinkler irrigation efficiency of the sprinkler head and improve the range and dispersion level of the jet flow, many optimization methods for the sprinkler head structure have been proposed. Chinese Patent No. CN201710789233 announced a "green sprinkler irrigation device for ecological and environmental protection projects". The special-shaped nozzle improves the spraying uniformity of the nozzle. The nozzle range is adjusted through the inlet pressure adjustment component installed on the nozzle rotation body, but the structure is relatively complicated, and the stability of the pressure regulating device cannot be guaranteed.

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