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Large-Eddy Simulation on Jet Mixing Enhancement Using Unsteady Minijets

  • Yanyan Feng*
  • , Dewei Fan
  • , Bernd R. Noack
  • , Hong Hu
  • , Yu Zhou
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen
  • Université Paris-Saclay
  • Technical University of Berlin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Minijet is one of the most promising active methods for the enhancement of jet mixing. The injection of minijets into a turbulent jet before the jet exit may have multiple impacts on the jet mixing structure. This work aims to understand the jet flow structure controlled by multiple unsteady minijets, especially the effect of the minijet phases on the jet mixing enhancement. Large eddy simulation was conducted for a round, turbulent jet, disturbed with six unsteady minijets, with a view to reveal the flow structures for various control modes and enhance the jet mixing. The Reynolds number is 8000 based on the jet exit diameter and jet centerline velocity at the jet exit. A space/time-dependent boundary condition at jet exit is deployed to generate a statistically stable turbulent jet flow field within an acceptable short computational time.

Original languageEnglish
Title of host publicationFluid-Structure-Sound Interactions and Control - Proceedings of the 5th Symposium on Fluid-Structure-Sound Interactions and Control
EditorsMarianna Braza, Yannick Hoarau, Yu Zhou, Anthony D. Lucey, Lixi Huang, Georgios E. Stavroulakis
PublisherSpringer Science and Business Media Deutschland GmbH
Pages341-346
Number of pages6
ISBN (Print)9789813349599
DOIs
StatePublished - 2021
Externally publishedYes
Event5th Symposium on Fluid-Structure-Sound Interactions and Control, FSSIC 2019 - Chania, Greece
Duration: 27 Aug 201930 Aug 2019

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference5th Symposium on Fluid-Structure-Sound Interactions and Control, FSSIC 2019
Country/TerritoryGreece
CityChania
Period27/08/1930/08/19

Keywords

  • Jet mixing enhancement
  • Large-Eddy simulation
  • Unsteady minijet

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