Universiti Teknologi Malaysia Institutional Repository

Swirling lean-premixed reacting flow

Abdul Wahid, Mazlan and M. Z. A., Faiz (2010) Swirling lean-premixed reacting flow. In: 10th Asian International Conference On Fluid Machinery, 2010, Kuala Lumpur, Malaysia.

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Official URL: http://dx.doi.org/10.1063/1.3464844

Abstract

In this study the characteristic of lean-premixed flames from a rotating double concentric burner is investigated. We investigate especially on the effect of rotational speed, mixture ratio and mixture velocity on the shape, dynamics and height of premixed flames. It is found that as the rotational speed reaches certain value for low velocity jet, the premixed flame buckles. Buckling becomes more prominent as the angular velocity increases and eventually the flame enters the burner. At sufficiently high rotational speeds, flame stabilization on top of the burner rim becomes impossible and the flame enters into the tube, i.e. immersed flame. Rotation shortens the flame and causes the flame to stabilize at a position nearer to the nozzle exit. For moderate jet flow velocities, burner rotation causes the flame to form a double cone shape with one taller than the other. Lean flames at high rotational speeds have a very dynamic appearance.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:swirling flow, flames, jets, flow measurement, rotating and swirling flows, flames, combustion, laminar jets, velocity measurements
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:27965
Deposited By: Liza Porijo
Deposited On:29 Aug 2012 09:15
Last Modified:29 Aug 2012 09:16

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