Studies on stability and dynamics of a swirling jet

Kenichi Harada, Shinichi Toyooka, Anirban Maitra, Riichiroh Maruyama, Kiyomi O. Toyooka, Charles F. Timmons, Gail E. Tomlinson, Domenico Mastrangelo, Robert J. Hay, John D. Minna, Adi F. Gazdar

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The temporal instability and nonlinear evolution of the swirling jet near a nozzle exit are studied by both normal-mode method and three dimensional direct numerical simulation (3D DNS). It is found that the swirl enhances the maximum linear growth rates for negative helical modes, while decreases the growth rate for axisymmetric mode. Numerical simulations show that the evolution in early sage is compared well with the linear stability theory. In nonlinear stage, the swirl promotes the breakup of 3D large scale organized structures in the flow into small eddies.

Original languageEnglish
Pages (from-to)237-244
Number of pages8
JournalActa Mechanica Sinica/Lixue Xuebao
Volume17
Issue number3
Publication statusPublished - 2001
Externally publishedYes

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Direct numerical simulation
Nozzles
Computer simulation

Keywords

  • Finite difference
  • Instability
  • Swirling jet

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanical Engineering

Cite this

Harada, K., Toyooka, S., Maitra, A., Maruyama, R., Toyooka, K. O., Timmons, C. F., ... Gazdar, A. F. (2001). Studies on stability and dynamics of a swirling jet. Acta Mechanica Sinica/Lixue Xuebao, 17(3), 237-244.

Studies on stability and dynamics of a swirling jet. / Harada, Kenichi; Toyooka, Shinichi; Maitra, Anirban; Maruyama, Riichiroh; Toyooka, Kiyomi O.; Timmons, Charles F.; Tomlinson, Gail E.; Mastrangelo, Domenico; Hay, Robert J.; Minna, John D.; Gazdar, Adi F.

In: Acta Mechanica Sinica/Lixue Xuebao, Vol. 17, No. 3, 2001, p. 237-244.

Research output: Contribution to journalArticle

Harada, K, Toyooka, S, Maitra, A, Maruyama, R, Toyooka, KO, Timmons, CF, Tomlinson, GE, Mastrangelo, D, Hay, RJ, Minna, JD & Gazdar, AF 2001, 'Studies on stability and dynamics of a swirling jet', Acta Mechanica Sinica/Lixue Xuebao, vol. 17, no. 3, pp. 237-244.
Harada K, Toyooka S, Maitra A, Maruyama R, Toyooka KO, Timmons CF et al. Studies on stability and dynamics of a swirling jet. Acta Mechanica Sinica/Lixue Xuebao. 2001;17(3):237-244.
Harada, Kenichi ; Toyooka, Shinichi ; Maitra, Anirban ; Maruyama, Riichiroh ; Toyooka, Kiyomi O. ; Timmons, Charles F. ; Tomlinson, Gail E. ; Mastrangelo, Domenico ; Hay, Robert J. ; Minna, John D. ; Gazdar, Adi F. / Studies on stability and dynamics of a swirling jet. In: Acta Mechanica Sinica/Lixue Xuebao. 2001 ; Vol. 17, No. 3. pp. 237-244.
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