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Paper Information

Journal:   FUEL AND COMBUSTION   FALL 2016-WINTER 2017 , Volume 9 , Number 2 ; Page(s) 21 To 37.
 
Paper: 

TURBULENT LEAN PREMIXED FLAME RESPONSETO THE IMPOSED INLET OSCILLATINGVELOCITY AND EFFECT OF THE EQUIVALENCE RATIO AND INLET TEMPERATURE ON IT

 
 
Author(s):  HAJIALIGOL NAJMEH, MAZAHERI KIUMARS*
 
* DEPARTMENT OF MECHANICAL ENGINEERING, TARBIATMODARES UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

In the present study, the flame response and the effect of equivalence ratio and inlet temperature on the flame response are numerically investigated using Weller flamelet combustion and LES turbulent models. The results show that with increasing excitation amplitude at a constant frequency, theheat release ratio increases; the increment is smaller at higher frequencies. Due to the combustor geometry, two recirculating zones are formed. Any change in the amplitude and frequency can affect these recirculation zones, especially the central recirculation zone. At the low frequencies (below 50Hz), increasing the excitation amplitude affects flame transfer functioninconsiderably, because of no influence of the recirculation zoneson the heat release. At higher frequencies, an increase in the amplitude has a more influence on value of flame transfer function. It is shown that by increasing the amplitude, up to frequency of 140 Hz, the phase of flame transfer function slightly reduced, while this is intensified with increasing the equivalence ratio or flame inlet temperature. Furthermore, by increasing the equivalence ratio or inlet temperature of the flame, heat release ratio and the flame transfer function are reduced.

 
Keyword(s): COMBUSTION INSTABILITY, FLAME RESPONSE, FLAME TRANSFER FUNCTION, EQUIVALENCE RATIO
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

HAJIALIGOL, N., & MAZAHERI, K. (2017). TURBULENT LEAN PREMIXED FLAME RESPONSETO THE IMPOSED INLET OSCILLATINGVELOCITY AND EFFECT OF THE EQUIVALENCE RATIO AND INLET TEMPERATURE ON IT. FUEL AND COMBUSTION, 9(2 ), 21-37. https://www.sid.ir/en/journal/ViewPaper.aspx?id=572079



Vancouver: Copy

HAJIALIGOL NAJMEH, MAZAHERI KIUMARS. TURBULENT LEAN PREMIXED FLAME RESPONSETO THE IMPOSED INLET OSCILLATINGVELOCITY AND EFFECT OF THE EQUIVALENCE RATIO AND INLET TEMPERATURE ON IT. FUEL AND COMBUSTION. 2017 [cited 2021July26];9(2 ):21-37. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=572079



IEEE: Copy

HAJIALIGOL, N., MAZAHERI, K., 2017. TURBULENT LEAN PREMIXED FLAME RESPONSETO THE IMPOSED INLET OSCILLATINGVELOCITY AND EFFECT OF THE EQUIVALENCE RATIO AND INLET TEMPERATURE ON IT. FUEL AND COMBUSTION, [online] 9(2 ), pp.21-37. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=572079.



 
 
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