2016 Fiscal Year Final Research Report
Premixed turbulent combustion characteristics taking into account the relative scales of flame and turbulence
| Project/Area Number |
26820056
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Research Collaborator |
KOBAYASHI Hideaki
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 予混合乱流燃焼 / 火炎のスケール / 乱れのスケール / 圧力 / 乱流 / 乱流燃焼速度 |
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| Outline of Final Research Achievements |
In order to clarify the effects of flame and turbulence scales on premixed combustion characteristics, turbulent combustion experiments were carried out using nozzle burners being outlet diameters of 14 mm, 20 mm, 40 mm and 60 mm under various mixture pressure conditions. Flame front structures were observed by OH-PLIF. The flame front wrinkling increased with an increase in burner outlet diameter. The turbulent burning velocity increased with an increase in turbulence intensity. In addition, it was clarified that the turbulent burning velocity also increased with an increase in the burner outlet diameter. Since the turbulent burning velocity of spherically propagating premixed turbulent flame increases with an increase in flame scale during flame propagation, the similar trend was also observed in the burner stabilized turbulent flame.
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| Free Research Field |
燃焼工学
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