Experiment platform of non-contact measurement axial-symmetric fluid thin film morphology

Abstract

The invention discloses an experiment platform of non-contact measurement axial-symmetric fluid thin film morphology. The experiment platform comprises a fluid flow control device, a fluid thin film fabrication device, an image acquisition device and a fluid collection device, wherein the fluid thin film fabrication device comprises a drainage device arranged at the bottom of a top table plate ofa rack, the fluid flow control device comprises an injection pump, the injection pump is arranged on the top table plate and communicates with the drainage device by a guide pipe, the fluid collectiondevice comprises a liquid collector, the liquid collector is arranged below the drainage device and is arranged on a Z-axis lifting sliding table by an XY-axis translation sliding table, the Z-axis lifting sliding table is arranged on a bottom table plate of the rack, slim wires are arranged between the drainage device and the liquid collector in a traction way by clamping heads respectively arranged in the drainage device and the liquid collector, the image acquisition device comprises a camera and a backlight source, and the camera and the backlight source are arranged at a front position and a rear position of the slim wires and are arranged on the rack. By the acquired experiment image, the relevant dynamic characteristic of the axial-symmetric fluid thin film can be extracted, and the alignment is high.

Description

technical field [0001] The invention relates to experimental research on fluid thin films, in particular to an experimental platform for non-contact measurement of shape of axisymmetric fluid thin films. Background technique [0002] With the continuous development of fluid dynamics, the experimental research on fluid thin films is also deepening. [0003] According to the Rayleigh mechanism, surface tension causes interfacial destabilization, causing the fluid film to present a drop-like sequence structure on the filament. Therefore, we use experiments to study the dynamic theory of the fluid film. [0004] The preparation of thin film is the basis of experimental research, which requires the thin film to form an axisymmetric state, and conduct theoretical analysis through the measurement of thin film flow experiments under different materials, diameters, different fluids, flow rates, etc. [0005] However, contact measurement will affect the original flow state, and the d...

AI Technical Summary

Problems solved by technology

[0005] However, contact measurement will affect the original flow state, and the detection element will disturb the original flow field and affect the measurement accuracy, resulting in the inability to measure or the difference between the measured value and the original value is too large, which makes the measurement work impossible or the accuracy of the measurement result is difficult to guarantee

For the current common non-contact measurement methods, such as electromagnetic flowmeters, ultrasonic flowmeters, vortex flowmeters, etc., there are complex installation and debugging, poor anti-interference ability, low reliability and accuracy, poor repeatability, and long service life. Short and other limitations

Images