Experimental measurements of flame shape and heat transfer characteristics were performed for impinged inverse diffusion flame(IDF) using propane as a fuel. The purpose of this study is to identify the favorable co-axial inverse diffusion flame structure for impingement heating. The flame consisted of an entrainment zone and mixing and combustion zone. The heat flux which represents heat transfer rate is measured by using a heat flux sensor that is located at the center of the impingement plate. The inverse diffusion flame structure has been classified into six modes. In these modes, several favorable flames for impingement heating were identified. In this study, the parameters are overall equivalent ratio(Φ), nozzle to impingement plate distance(h/d), vertical distance from the stagnation point and Reynolds number(Re) of combustion air.

Abstract
 Nomenclature1
 1. Introduction
 2. Experimental Set-up and Method
 3. Shape of IDF
 4. Heat flux distribution of impinging IDF(Inverse Diffusion Flame)
  4.1 Stagnation point heat flux
  4.2 Radial heat flux distributions
 5. Conclusions
 Acknowledgment
 References

• K.J. Kang(School of Mechanical and Aerospace Engineering, Sunchon National University, Korea) | 강기중
• J.Y. Park(School of Mechanical and Aerospace Engineering, Sunchon National University, Korea) | 박주용
• K.M. Lee(School of Mechanical and Aerospace Engineering, Sunchon National University, Korea) | 이기만 Corresponding author