Experimental device for multiphase floating jet flow and image processing method for oil drop bubble shadow

Abstract

The invention relates to a multiphase floating jet experiment generating device and an oil drop bubble shadow image processing method. The device includes an oil and gas multiphase floating jet simulation system and a measurement system. The oil droplet bubble shadow image processing method obtains the oil droplet and bubble movement information through the shadow image. For the image processing of the discrete phase liquid droplet target, the edge curvature segmentation is used to realize the separation and positioning of overlapping targets, and the group recognition is used to improve the target recognition efficiency. Oil droplets and air bubbles are distinguished by the difference of degree statistical information, and the motion speed of oil droplets and air bubbles is calculated by matching analysis of two adjacent frames of images. In summary, the present invention can control the proportion of oil and gas and the size of oil droplets and bubbles dispersed in the water body, and realize the simultaneous measurement of the movement of each phase of the water body, oil droplets, and bubbles, and can be used to study the internal structure and transport of oil and gas multiphase floating jets. The law of migration and diffusion provides theoretical support for practical issues such as the assessment of underwater oil spill pollution.

Description

technical field [0001] The invention relates to a multiphase floating jet experiment generating device and an oil drop bubble shadow image processing method, belonging to the technical field of environmental simulation experiment equipment. Background technique [0002] The research on multiphase buoyant jet flow has a broad background in the field of water environment, including the transport and diffusion of submarine blowout oil in the water body, the use of bubble plumes to enhance the mixing of water bodies, and the problem of dredging mud and sand. Taking submarine blowout oil spill as an example, the underwater process of blowout oil spill is mainly manifested as complex multiphase floating jet flow formed by oil-gas mixture. The dispersed phase is oil droplets and air bubbles of different sizes, and the continuous phase is seawater. There is a slip velocity between the oil droplets and air bubbles in the dispersed phase and the water body in the continuous phase, whi...

AI Technical Summary

Problems solved by technology

However, experiments on multiphase buoyant jets are relatively difficult to observe, and relatively few related studies have been carried out.

There are only some experimental devices for bubble jet flow, and none of them consider controlling the proportion of bubbles of different sizes and the coexistence of oil and gas.

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