主催: 一般社団法人 日本機械学会
会議名: 第100期流体工学部門講演会
開催日: 2022/11/12 - 2022/11/13
Side jets are generated when the jet density is smaller than that of the ambient gas. It has been suggested that the side jets are related to self-excited oscillations due to the local absolute instability that occurs when the density ratio is less than 0.7, and vorticity generation due to baroclinic torque caused by the cross product of density gradient and pressure gradient. In addition, it has been suggested that a side jet is also formed by a pair of streamwise vortices with different rotation directions. First of all, in order to confirm previous hypotheses, we have tried the formation of side jets in a helium gas jet by a numerical simulation using ANSYS Fluent. As a result, it is shown that a side jet is formed between a streamwise vortex pair.