Experimental and numerical studies of the jet tube based on venturi effect

• We propose a new jet tube in this paper, which is used in suction device.
• The structures of jet tube was introduced and analyzed.
• The suction of influence factors was analyzed by simulations and experiments.
• The force and suction on the objects was obtained by mathematical mode.

Venturi has been widely used in the production and daily life due to its simple structure and low cost. This paper presents a jet tube, which is based on the venturi theory. The characteristic of the jet tube is that a rectangular opening is opened in the wall of the tube, which is linked to the outside of the tube. We conduct research and make a design to the structure of the rectangular opening. Then, a mathematical model is established for the analysis of the velocity on the rectangular opening. A careful study has been done on the relationship between the different parameters by experiments and simulations. SC/Tetra, the fluid analysis software, has been used in the simulation. The experimental study verifies the suction of the jet tube, the velocity distribution and size of the rectangular opening. Besides, the model has been improved by experiments and simulations. It provides the theory basis for analyzing the suction within the jet tube.