Year 2018, Volume 38 , Issue 1, Pages 55 - 64 2018-04-30

NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES
DİFÜZÖR TİPİ YANMA ODASINDA GERÇEKLEŞEN ÖN KARIŞIMLI TÜRBÜLANSLI YANMADA ORTAYA ÇIKAN ALEVİN KONUMUNUN TÜRBÜLANS YOĞUNLUĞU VE TÜRBÜLANS UZUNLUK ÖLÇÜSÜ İLE DEĞİŞİMİNİN SAYISAL OLARAK İNCELENMESİ

Ibrahim NAZZAL [1] , Özgür ERTUNÇ [2]


This study aims to investigate the response of the flame location of a turbulent premixed flame that has been exposed to various turbulence intensities and turbulence length scales. A diffuser-type burner is used to reveal the influence of turbulence intensity and turbulence length scales on the flame location of premixed propane–air flames without changing the inlet velocity of the fuel. Numerical simulations are performed for the turbulent premixed propane flames by using a coherent flame model under steady-state conditions. Results show that the flame location moves toward the inlet of the diffuser combustor with an increase in turbulence intensity for moderate and high turbulence length scales. The behavior of the flame location is different for the low turbulence length scale. The flame location initially decreases with an increase in turbulence intensity and subsequently stabilizes. Furthermore, the maximum flame area density is shown to increase with an increase in the turbulence intensity and the turbulence length scale, as the flame moves toward the inlet in these cases. It is clearly documented how turbulence intensity and turbulence length scale simultaneously influence the flame area density, flame shape, and flame location in a diffuser- type burner.
Bu makalenin amacı, ön karışımlı yanma sonucu oluşan alevin, çeşitli türbülans yoğunluklarına ve türbülans uzunluk ölçeğine maruz kalması sonucu oluşan alev yeri değişikliğini incelemektir. Yakıtın yanma odasına giriş hızını değiştirmeden, sadece türbülans yoğunluğunun ve türbülans uzunluk ölçeğinin alev yeri üstüne etkisini görebilmek için araştırmalar difüzör tipi yanma odasında gerçekleştirilmiştir. Propanın türbülanslı ön karışımlı yanma simulasyonları tutarlı alev modeli (coherent flame model) kullanılarak kararlı akış rejiminde gerçekleştirilmiştir. Orta ve yüksek türbülans uzunluk ölçeği kullanıldığında türbülans yoğunluğundaki artış ile alevin difüzörün girişine doğru hareket ettiği gözlemlenmiştir. Düşük uzunluk ölçeği kullanılarak gerçekleştirilen simulasyonlarda, alev türbülans yoğunluğunun artması ile girişe doğru yaklaştığı ancak türbülans yoğunluğunun daha da arttılmasına rağmen alev konumunda kayda değer bir değişiklik olmadığı gözlemlenmiştir. Sonuçlar, türbülans yoğunluğu ve türbülans uzunluk ölçeğindeki artışın, maksimum alev alan yoğunluğunu arttırdığını göstermektedir. Dahası türbülans yoğunluğunun ve uzunluk ölçeğinin alev alan yoğunluğu, alevin şekli ve konumu üzerinde aynı anda etkili olduğu gösterilmiştir.
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Primary Language en
Subjects Engineering, Mechanical
Journal Section Research Article
Authors

Author: Ibrahim NAZZAL
Institution: OZYEGIN UNIVERSITY
Country: Turkey


Author: Özgür ERTUNÇ
Institution: OZYEGIN UNIVERSITY
Country: Turkey


Dates

Publication Date : April 30, 2018

Bibtex @research article { isibted782429, journal = {Isı Bilimi ve Tekniği Dergisi}, issn = {1300-3615}, address = {}, publisher = {Türk Isı Bilimi ve Tekniği Derneği}, year = {2018}, volume = {38}, pages = {55 - 64}, doi = {}, title = {NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES}, key = {cite}, author = {Nazzal, Ibrahim and Ertunç, Özgür} }
APA Nazzal, I , Ertunç, Ö . (2018). NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES . Isı Bilimi ve Tekniği Dergisi , 38 (1) , 55-64 . Retrieved from https://dergipark.org.tr/en/pub/isibted/issue/56379/782429
MLA Nazzal, I , Ertunç, Ö . "NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES" . Isı Bilimi ve Tekniği Dergisi 38 (2018 ): 55-64 <https://dergipark.org.tr/en/pub/isibted/issue/56379/782429>
Chicago Nazzal, I , Ertunç, Ö . "NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES". Isı Bilimi ve Tekniği Dergisi 38 (2018 ): 55-64
RIS TY - JOUR T1 - NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES AU - Ibrahim Nazzal , Özgür Ertunç Y1 - 2018 PY - 2018 N1 - DO - T2 - Isı Bilimi ve Tekniği Dergisi JF - Journal JO - JOR SP - 55 EP - 64 VL - 38 IS - 1 SN - 1300-3615- M3 - UR - Y2 - 2017 ER -
EndNote %0 Isı Bilimi ve Tekniği Dergisi NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES %A Ibrahim Nazzal , Özgür Ertunç %T NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES %D 2018 %J Isı Bilimi ve Tekniği Dergisi %P 1300-3615- %V 38 %N 1 %R %U
ISNAD Nazzal, Ibrahim , Ertunç, Özgür . "NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES". Isı Bilimi ve Tekniği Dergisi 38 / 1 (April 2018): 55-64 .
AMA Nazzal I , Ertunç Ö . NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES. Isı Bilimi ve Tekniği Dergisi. 2018; 38(1): 55-64.
Vancouver Nazzal I , Ertunç Ö . NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES. Isı Bilimi ve Tekniği Dergisi. 2018; 38(1): 55-64.
IEEE I. Nazzal and Ö. Ertunç , "NUMERICAL INVESTIGATION OF THE FLAME LOCATION OF TURBULENT PREMIXED COMBUSTION IN A DIFFUSER BURNER EXPOSED TO VARIOUS TURBULENCE INTENSITIES AND TURBULENCE LENGTH SCALES", Isı Bilimi ve Tekniği Dergisi, vol. 38, no. 1, pp. 55-64, Apr. 2018