The influence of changing the geometry of the intake part on performance of suction nozzle of the vacuum device

Abstract

In this paper the CFD fluid simulation software ANSYS CFX (version 17 0) was used to validate different suction nozzle geometries (linear or curved geometry of the side wall between inlet and outlet) and to explore the influencing factors of different geometric designs for the vacuum device The influence of the different geometric design factors on the flow field characteristics of the suction nozzle on the vacuum device has been explored The inlet boundary condition which is the average velocity of an internal domain is set to 10 m/s the outlet boundary condition total pressure is set to 0 Pa atmospheric pressure and the wall boundary condition is set to No-slip wall After the analysis via simulation the results indicate that the static pressure loss coefficient of the A TYPE geometry is 0 85 which is higher than the B TYPE geometry (0 19) And after comparing the static pressure loss coefficient (observation index with the simulation value) and the flow field characteristics it can be concluded that the B TYPE geometric design has a better flow field performance than the A TYPE geometry design After completing the discussion of the relative relationship between the flow field characteristics and the geometric design it is also possible to realize the design principles of the suction nozzle at the inlet of the vacuum type product

Date of Award	2020
Original language	English
Supervisor	Jiun-Jih Miau (Supervisor)