Vortex identification and evolution of a jet in cross flow based on Rortex

Jie min Zhan, Zhi ya Chen, Chi wai Li, Wen qing Hu, Yu tian Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Jet in cross flow is an important issue in engineering practice, for example, it is used to improve turbine efficiency in film cooling. In this study, the large eddy simulation and the spectrum analysis are employed to analyze the vortices in a jet in cross flow. The results show that the Rortex method more accurately identifies the vortex structures than other methods. In the analysis of the evolution of the spatial vortex structures, it is affirmed that the spectrum analysis using the Rortex value can effectively identify the characteristic vortex structures in a jet in cross flow.

Original languageEnglish
Pages (from-to)1237-1250
Number of pages14
JournalEngineering Applications of Computational Fluid Mechanics
Volume14
Issue number1
DOIs
Publication statusPublished - 1 Jan 2020

Keywords

  • dominant frequency
  • jet in cross flow
  • Rortex
  • spectrum analysis
  • Vortex

ASJC Scopus subject areas

  • Computer Science(all)
  • Modelling and Simulation

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