An experimental device for studying the influence of local deformation of a narrow rectangular flow channel, and a processing and experimental method

By designing an experimental device for the local deformation effects of a narrow rectangular flow channel with detachable embedded deformation plug components and integrated multi-point temperature measurement, liquid film monitoring and dual-view visualization functions, the problem of the inability of existing devices to flexibly adjust deformation was solved, realizing efficient and reliable experimental research and improving the integrity and comparability of experimental data.

CN122361518APending Publication Date: 2026-07-10CHONGQING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV OF TECH
Filing Date
2026-06-10
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing experimental devices are difficult to flexibly adjust the position, shape, or degree of local deformation, and cannot simultaneously achieve local controllable heating, distributed high-precision temperature measurement, liquid film state sensing, and dual-view optical observation. This results in fragmented experimental data, insufficient accuracy, and poor repeatability, failing to meet the needs of systematic mechanism exploration or engineering optimization verification.

Method used

An experimental device for the influence of local deformation in a narrow rectangular flow channel was designed. It adopts a detachable and embedded deformation plug-in component, which integrates multi-point temperature measurement, liquid film monitoring and dual-view visualization functions. The modular design supports the rapid replacement of different deformation configurations. Combined with high-precision CNC machining and mirror polishing, it ensures the consistency of geometric parameters and accurate sensor positioning.

Benefits of technology

It enables accurate reproduction of local deformation and multi-parameter research, improves experimental efficiency and data integrity, ensures stable and reliable heat transfer boundary conditions, and significantly enhances the scientific rigor and comparability of experimental results.

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    Figure CN122361518A_ABST
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Abstract

This invention discloses an experimental apparatus and its fabrication and experimental method for studying the effects of local deformation in a narrow rectangular flow channel. The apparatus includes an experimental chamber formed by the detachable and sealed connection of upper and lower pressure-bearing shells, independent chambers connected at both ends, and replaceable deformable insert components. The insert body is integrally machined onto the surface of a heating plate and fixed to a placement slot in the lower pressure-bearing shell using thermally conductive adhesive. The apparatus integrates electrode components, multi-point fiber optic temperature measurement, and a liquid film sensor, and is equipped with wide and narrow viewing windows for observing bubble behavior and liquid film dynamics, respectively. The viewing windows utilize a window gasket + pressure plate + bolt structure for reliable sealing. During fabrication, each component is machined separately, then the heating plate, electrodes, and sensors are installed sequentially, and finally the upper pressure-bearing shell is closed and the viewing windows are assembled. This apparatus features a compact structure, reliable sealing, high visualization, and supports rapid replacement of deformable inserts with different geometric parameters, making it suitable for high-precision thermo-hydraulic experimental research on flow boiling and heat transfer deterioration.
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