What is it about?
Multiple jets are free shear flows that provide better mixing than single jets. We have made a systematic study for the first time using OpenFOAM for five nozzle configurations. The history/evolution of multiple jets are discussed qualitatively and quantitatively. This work also confirms that the entrainment is dependent on the nozzle.
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Why is it important?
We have shown that the multiple jets produce non-linear behavior in the near field. Computation of jet half width for multiple jets were handled by Equivalent Area Method (Kannan, 2016). Decoupling of "entrainment" from velocity decay and jet spread is shown by multiple jets. The non-linear phenomenon exhibited by multiple jets leads to better mixing in the near field. By understanding of the flow field characteristics, the usage of multiple jets will lead to lesser (air and noise) pollution by providing better mixing.
Perspectives
The effect of nozzle configuration plays a major role in multiple jets. The understanding of multiple jets and its usage will lead to better environment.
B T KANNAN
Indian Institute of Technology Madras
Read the Original
This page is a summary of: Influence of nozzle configuration on the flow field of multiple jets, Proceedings of the Institution of Mechanical Engineers Part G Journal of Aerospace Engineering, April 2017, SAGE Publications,
DOI: 10.1177/0954410017699008.
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