Numerical and experimental analysis of the flow and transition of free synthetic jets

Name: Numerical and experimental analysis of the flow and transition of free synthetic jets
Author: Glowienko, R., Derlien, H., Ertunç, Özgür, Delgado, A.

İsim	Numerical and experimental analysis of the flow and transition of free synthetic jets
Yazar	Glowienko, R., Derlien, H., Ertunç, Özgür, Delgado, A.
Basım Tarihi:	2019-04
Basım Yeri	- IOP Publishing
Konu	Synthetic jets, CFD, Turbulence
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0169-5983
Kayıt Numarası	8ddda428-837b-4011-8fae-d7df8b8a7843
Lokasyon	Mechanical Engineering
Tarih	2019-04
Örnek Metin	In this paper, flow characteristics and the transition of synthetic jets are investigated numerically and experimentally. The investigated synthetic jets have a dimensionsless stroke length L-0/d of 146 and 167, an U-0 of 7.3 and 8.35 m s(-1) and a jet Reynolds number Re-U0 of 471 and 539. Novelty of this paper is the extensive analysis and explanation of why synthetic jets with L-0/d > 70 result to transition and turbulent flow: it is shown that the jets exhibit swirl which originates from the cavity. The rotation results in more rapid divergence and deceleration of the free jets. Both processes initially cause disruptions of the primary vortex and the secondary vortices, also vortex breakdown, and ultimately result in jet turbulence. Extension of the laminar region spatially and temporally is possible by increasing the height of the cavity.
DOI	10.1088/1873-7005/aaf498
Cilt	51

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Numerical and experimental analysis of the flow and transition of free synthetic jets

Yazar Glowienko, R., Derlien, H., Ertunç, Özgür, Delgado, A.

Basım Tarihi 2019-04

Basım Yeri - IOP Publishing

Konu Synthetic jets, CFD, Turbulence

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0169-5983

Kayıt Numarası 8ddda428-837b-4011-8fae-d7df8b8a7843

Lokasyon Mechanical Engineering

Tarih 2019-04

Örnek Metin In this paper, flow characteristics and the transition of synthetic jets are investigated numerically and experimentally. The investigated synthetic jets have a dimensionsless stroke length L-0/d of 146 and 167, an U-0 of 7.3 and 8.35 m s(-1) and a jet Reynolds number Re-U0 of 471 and 539. Novelty of this paper is the extensive analysis and explanation of why synthetic jets with L-0/d > 70 result to transition and turbulent flow: it is shown that the jets exhibit swirl which originates from the cavity. The rotation results in more rapid divergence and deceleration of the free jets. Both processes initially cause disruptions of the primary vortex and the secondary vortices, also vortex breakdown, and ultimately result in jet turbulence. Extension of the laminar region spatially and temporally is possible by increasing the height of the cavity.

DOI 10.1088/1873-7005/aaf498

Cilt 51