BI3D Application Introduction to Experiments Problem Description Usually gas injection from multiple orifices is applied to a real equipment. It has been observed that the induced gas rate is increased significantly by adding more outlet orifices to each blade and larger interfacial areas are generated. A further numerical investigation has been carried out attempting to understand the interactions among bubbles generated from multiple orifices. The physical setup is similar with the single bubble formation under the cross-flow configuration.
Water runs into the tube from one end and goes out from the other.
Multiple hypodermic needles are implanted at the side wall of the tube and distributed along the height of the cylindrical tube. One end of the hypodermic needle penetrates into the tube and is exposed into the water field and the other end is connected with a gas chamber. Hypodermic needles are identical to each other and each has its own gas supply system. Gas is injected into water through individual hypodermic needles and there will be multiple bubbles generated simultaneously. Typical Results Double bubble formation under cross-flow configuration.