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| Experiment on premixed laminar combustion of n-butanol |
| 1. Key Laboratory of Fluid and Power Machinery Ministry of Education, Xihua University, Chengdu, Sichuan 610039, China; 2. Vehicle Measurement, Control and Safety Key Laboratory of Sichuan Province, Xihua University, Chengdu, Sichuan 610039, China; 3. Oujiang College, Wenzhou University, Wenzhou, Zhejiang 325035, China |
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Abstract Based on the constant volume combustion bomb, the effects of equivalence ratio (0.7～1.6), initial temperature (400, 430 and 460 K) and initial pressure (0.1, 0.2 and 0.3 MPa) on butanol-air premixed laminar combustion were investigated by the ball type flame extension method with high speed schlieren photography technology. Several key parameters of laminar combustion of laminar combustion velocity, flame propagation velocity and stretch rate were analyzed in detail. The results show that the stability of flame front becomes worse with the increasing of fuel-air equivalence ratio, while the flame propagation velocity and the laminar burning velocity of unstretched flame are increased firstly with latter decreaseing. Both the flame propagation velocity and the unstretched laminar burning velocity are increased with the increasing of initial temperature, while the stability of flame front is decreased. The unstretched laminar burning velocity and the flame propagation velocity are decreased with the increasing of initial pressure, and the stability of flame front is deteriorated. In addition, the elongation of flame front surface is decreased with the increasing of flame propagation velocity.
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Received: 28 December 2016
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2017, Vol. 38 
