Optimization design of sea cucumber bait mixing device based on flow field analysis

At present, the mixing of sea cucumber bait mainly relies on manual labor, which has problems such as low mixing efficiency, poor uniformity, and high labor intensity. In order to solve the above problems, a sea cucumber bait mixing device has been designed and optimized based on flow field analysis. Use Computational Fluid Dynamics (CFD) software to numerically simulate the agitating device for sea cucumber bait. By combining the mass conservation equation, momentum conservation equation, and standard k of the fluid- ε Equations are simulated and calculated under certain boundary conditions and simplified conditions. Analyze and compare the velocity vector maps, turbulence intensity contour maps, and the changes in turbulent kinetic energy on specific positioning lines (line1, line2) in different types of agitator blades and stirring devices; The optimization design of the mixing device wall was carried out, and the velocity vector map, velocity cloud map, and turbulence kinetic energy changes on the specific positioning lines (line1, line2) inside the mixing device were analyzed and compared between the new wall mixing device and the original mixing device. Through the above analysis and comparison, it was found that the 45° pushing down inclined blade propeller has a better disturbance effect on the convection field in the mixing device than the 45° pushing up inclined blade propeller. The installation of a semicircular tube shaped baffle on the wall of the mixing device greatly improves the various characteristics of the fluid in the flow field. The optimized design of the sea cucumber bait mixing device includes a 45°pushing down inclined blade paddle and a semicircular tube shaped baffle installed on the wall of the mixing device. This article provides a detailed description of the fluid properties in the internal flow field of the sea cucumber bait stirring device, providing reference for the optimization design of the sea cucumber bait stirring device in the future.