posted on 2020-04-20, 18:03authored byYirong Feng, Hongfeng Mu, Xi Liu, Zhengliang Huang, Haomiao Zhang, Jingdai Wang, Yongrong Yang
We present a miniaturized microbubble generator via three-dimensional
(3D) printing for potential use in gas–liquid chemical reactions.
We design it based on venturi channel structures to enable continuous
gas dispersion by turbulent interactions and fabricate it using 3D
printing for its high design flexibility and fast manufacturing speed.
By experiments using water and nitrogen, we discuss quantitatively
the dependence of the formed microbubble characteristics on operating
conditions and geometric parameters. In particular, predictive models
of Sauter mean diameter of daughter bubbles are proposed to help select
proper operating and design parameters in order to achieve the desired
level of microbubbles. To further improve the performance, we explore
series- and parallel-venturi configurations and find that the parallel-based
assembly performs significantly better. Therefore, we prove that the
3D printed venturi microbubble generator has high potential for the
flow chemistry community to implement gas–liquid reactions.