Open Access Journal

ISSN : 2456-1290 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

ISSN : 2456-1290 (Online)

Call For Paper : Vol 11, Issue 05, May 2024
On The Role of Entrainment Phenomena on Flaming Combustion

Author : Rahul Ravi R 1 Sambit Supriya Dash 2 Vikram Ramanan 3 Vinayak Malhotra 4

Date of Publication :22nd March 2018

Abstract: Flaming combustion is sub-classified into premixed and diffusion flames, the type of flames that are ubiquitous. From jet engines to rocket engines these types of flames are utilized to generate thrust for our vehicles. With careful observation and inference, it can be clearly stated that in real time applications it’s a combination of these two flames in unison that is in work, rather than either one alone. Although innumerable work has been done in the past that concern the two types of flames individually very few research works exists that concerns the transition between these two regimes nor their combined effect on the efficiency of combustion. Current work is aimed at gaining fundamental knowledge of transition, by studying a few of the many factors that influence transition and their corresponding effects on the physical parameters. A butane cylinder fitted with nozzle containing 3 equidistant sets of 4 holes each that have an equal diameter for air entrainment is used for carrying out the study. Parameters like entrainment area, the orientation of nozzle, the mass flow rate of fuel and various positions and combinations of air entrainment holes are manually varied to observe the physical changes in the flame like flame height and intensity. Image processing is used as a potential resource along with regular CCD camera. The phenomenon is systematically video-graphed and image segmentation is carried out to obtain desired characteristics. These methods are jointly used utilized to establish a non-dimensional parameter that theoretically characterizes transition phenomena. The results obtained from this experiment could be easily applied to combustion chambers present in jet engines as the experiment is aimed to mimic jet engine combustion chamber to a certain extent. Further, the results can provide a prospective understanding of the physics behind transition phenomena and a concept of premixed strength that can in the near future pave way for greener and efficient propulsion systems.

Reference :

    1. S. H. Sohrab and C. K. Law, “Influence of Burner Rim Aerodynamics on Polyhedral Flames and Flame Stabilization”. COMBUSTION AND FLAME 62:243-254.
    2. Aspi R. Wadia, “Advanced Combustor Liner Cooling Technology for Gas Turbine”. Defence Science Journal, Vol38, No. 4, October 1988. pp363-380
    3.  Xiaodong Jing and Xiaofeng Sun, “Experimental investigations of perforated liners with bias flow”. Journal of Acoustic Society America 106 (5), November 1999
    4. JEFF D. ELDREDGE AND ANN P. DOWLING, “The absorption of axial acoustic waves by a perforated liner with bias flow”. Journal of Fluid Mechanics (2003), vol. 485, pp. 307–335
    5. Li Lei, Guo Zhihui, Zhang Chengyu, Sun Xiaofeng, “A Passive Method to Control Combustion Instabilities with Perforated Liner”. Chinese Journal of Aeronautics 23(2010) 623-630
    6. Claus Heuwinkel, Andre Fischer, Ingo Rohle, Lars Enghardt, and Friedrich Bake, “Characterization of a Perforated Liner by Acoustic and Optical Measurements”. 16th AIAA/CEAS Aeroacoustics Conference
    7. José M. N. Rodrigues and Edgar C. Fernandes, “Stability Analysis and Flow Characterization of Multi-Perforated Plate Premixed Burners”. 17th International Symposium on Applications of Laser Techniques to Fluid Mechanics Lisbon, Portugal, 07-10 July, 2014
    8.  Jiao Lei, Naian Liu, Linhe Zhang, Kohyu Satoh, “Temperature, velocity and air entrainment of fire whirl plume: A comprehensive experimental investigation”. Combustion and Flame 162 (2015) 745–758
    9. Kai Wang, Changfa Tao, Qin Liu, Yejian Qian and Peixiang He, “An experimental investigation of flame height and air entrainment rate of double jet fires”. Experimental Heat Transfer: A Journal of Thermal Energy Generation, Transport, Storage, and Conversion
    10.  Longhua Hu, Shixiang Liu and Xiaolei Zhang, “Flame heights of line-source buoyant turbulent non premixed jets with air entrainment constraint by two parallel side walls”. Fuel 200 (2017) 583–589
    11. Changfa Tao, Yongqiang Liu, Fei Tanga, Qiang Wang, “An experimental investigation of the flame height and air entrainment of ring pool fire”. Fuel 216 (2018) 734–737

Recent Article