Active-grid turbulence effect on the topology and the flame location of a lean premixed combustion

Name: Active-grid turbulence effect on the topology and the flame location of a lean premixed combustion
Author: Alhumairi, Mohammed Khudhair Abbas, Ertunç, Özgür

İsim	Active-grid turbulence effect on the topology and the flame location of a lean premixed combustion
Yazar	Alhumairi, Mohammed Khudhair Abbas, Ertunç, Özgür
Basım Tarihi:	2018
Basım Yeri	- Society of Thermal Engineers of Serbia
Konu	Lean premixed combustion, Active-grid turbulence, Flame location
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0354-9836
Kayıt Numarası	194bc0d0-3ee7-41dd-85e3-8c4be62c6e69
Lokasyon	Mechanical Engineering
Tarih	2018
Notlar	Ozyegin University ; Diyala University ; TÜBİTAK
Örnek Metin	Lean premixed combustion under the influence of active-grid turbulence was computationally investigated, and the results were compared with experimental data. The experiments were carried out to generate a premixed flame at a thermal load of 9 kW from a single jet flow combustor. Turbulent combustion models, such as the coherent flame model (CFM) and turbulent flame speed closure (TFC) model were implemented for the simulations performed under different turbulent flow conditions, which were specified by the Reynolds number based on Taylor’s microscale (Reλ), the dissipation rate of turbulence (ε) and turbulent kinetic energy (k). This study shows that the applied turbulent combustion models differently predict the flame topology and location. However, similar to the experiments, simulations with both models revealed that the flame moves toward the inlet when turbulence becomes strong at the inlet, that is, when Reλ at the inlet increases. The results indicated that the flame topology and location in the coherent flame model were more sensitive to turbulence than those in the turbulent flame speed closure model. The flame location behavior on the jet flow combustor significantly changed with the increase of Reλ.
DOI	10.2298/TSCI170503100A
Cilt	22

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Özyeğin Üniversitesi

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Active-grid turbulence effect on the topology and the flame location of a lean premixed combustion

Yazar Alhumairi, Mohammed Khudhair Abbas, Ertunç, Özgür

Basım Tarihi 2018

Basım Yeri - Society of Thermal Engineers of Serbia

Konu Lean premixed combustion, Active-grid turbulence, Flame location

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0354-9836

Kayıt Numarası 194bc0d0-3ee7-41dd-85e3-8c4be62c6e69

Lokasyon Mechanical Engineering

Tarih 2018

Notlar Ozyegin University ; Diyala University ; TÜBİTAK

Örnek Metin Lean premixed combustion under the influence of active-grid turbulence was computationally investigated, and the results were compared with experimental data. The experiments were carried out to generate a premixed flame at a thermal load of 9 kW from a single jet flow combustor. Turbulent combustion models, such as the coherent flame model (CFM) and turbulent flame speed closure (TFC) model were implemented for the simulations performed under different turbulent flow conditions, which were specified by the Reynolds number based on Taylor’s microscale (Reλ), the dissipation rate of turbulence (ε) and turbulent kinetic energy (k). This study shows that the applied turbulent combustion models differently predict the flame topology and location. However, similar to the experiments, simulations with both models revealed that the flame moves toward the inlet when turbulence becomes strong at the inlet, that is, when Reλ at the inlet increases. The results indicated that the flame topology and location in the coherent flame model were more sensitive to turbulence than those in the turbulent flame speed closure model. The flame location behavior on the jet flow combustor significantly changed with the increase of Reλ.

DOI 10.2298/TSCI170503100A

Cilt 22