Plate-shaped fuel element outlet large-space jet flow visualization experiment device

Abstract

The invention provides a plate-shaped fuel element outlet large-space jet flow visualization experiment device. The device comprises an inlet cavity, a parallel flat plate channel buffer chamber connected with an inlet in a box manner, a flow distribution pore plate arranged at the joint of the inlet cavity and the parallel flat plate channel buffer chamber, a large-space box body, an upper seal head arranged on the large-space box body, a water outlet pipeline arranged on the upper seal head, a low-point water drain valve arranged at the lower end of the large-space box body, and a partition plate arranged in the large-space box body and provided with a water replenishing hole; and the parallel flat plate channel buffer chamber is in a step shape, a multi-seam parallel flat plate channel is arranged in the middle of the upper section of the parallel flat plate channel buffer chamber, the upper end part of the parallel flat plate channel buffer chamber is embedded into the large-space box body through a channel and is connected with the partition plate, and the upper sealing head is provided with an exhaust hole and a water outlet pipeline. The device is ingenious in structural design, and the problems that a traditional test device is limited in flow field measurement range and affects a flow field structure are solved.

Description

technical field [0001] The invention belongs to a visual experimental device for studying the phenomenon of jet mixing and flow field evolution at the exit of a plate-shaped fuel element, and is applied to the flow field information of the plate-shaped fuel element such as flow distribution, jet mixing, and flow development and diffusion characteristics. Research mainly involves technical fields such as fluid mechanics and reactor thermal hydraulics. Background technique [0002] The plate-shaped fuel core has the advantages of compact structure, high power density and strong heat exchange capacity, and has been widely used in marine power reactors, material reactors and experimental reactors since the 1960s. Parallel flat narrow rectangular channels have a great similarity with plate-shaped fuel elements and are easy to study, so they are widely used to simulate plate-shaped fuel elements. Coolant water flows out of the fuel assemblies in jets driven by pumps in the reacto...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a visual experimental device for the evolution process of the large-space jet flow field at the exit of a plate-shaped fuel element. The flow field measurement range of the test device is limited, and the test device affects the structure of the flow field

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