Fluid shear stress generator

Abstract

The invention relates to the field of fluid experimental equipment and discloses a fluid shear stress generator. The fluid shear stress generator comprises a support frame, a fixed bucket, a rotating bucket, a revolving shaft and a vertical type rotation driving component; the fixed bucket is located on the upper portion of the support frame, the vertical type rotation driving component is located on the lower portion of the support frame, the rotating bucket is located inside the fixed bucket and is coaxial with the fixed bucket, the upper end of the revolving shaft penetrates through a round hole formed in the center of the bottom of the fixed bucket and is coaxially connected with the bottom of the rotating bucket, and the lower end of the revolving shaft is in axial connection with the vertical type rotation driving component. The fluid shear stress generator forms a coaxial cylinder type structure, fluid with the fluid shearing force in linear variation can be generated, the fluid shearing force at each position can be obtained accurately, the fluid shear stress generator further has the advantages of being simple in structure, low in cost, stable in generated fluid shearing force, large in volume and easy to adjust, and thus the fluid shear stress generator can be further widely applied to various fluid shearing force experiments.

Description

technical field [0001] The invention relates to the field of fluid experiment equipment, in particular to a fluid shear force generator. Background technique [0002] Since fluid shear force is one of the important properties of fluid, it has an extremely important connection with scientific research projects such as vascular disease research, polymer melt research and water purification research. At present, the instruments and equipment for studying fluid shear force are mainly rheometers (including laminar rheometers, plate rheometers, capillary rheometers, etc.) The magnitude of the shear force has the advantages of being stable and uniform, easy to adjust, and high data measurement accuracy, but it also has limitations such as high price and small volume, which limit its application space; although the latter has the advantages of simple production and low cost, it produces However, the size of the fluid shear force has the disadvantages of uneven flow, slow and inaccu...

AI Technical Summary

Problems solved by technology

At present, the instruments and equipment for studying fluid shear force are mainly rheometers (including laminar rheometers, plate rheometers, capillary rheometers, etc.) The magnitude of the shear force has the advantages of being stable and uniform, easy to adjust, and high data measurement accuracy, but it also has limitations such as high price and small volume, which limit its application space; although the latter has the advantages of simple production and low cost, it produces However, the size of the fluid shear force has the disadvantages of uneven flow, slow and inaccurate adjustment, and limited data measurement (the shear force pressure measuring tube can only measure the fluid shear force of a certain surface in the fluid), which is true for the real situation. Simulation is limited

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