Study of Schlieren Optical Visualization Basics Technique and the Principle

Abstract:

This paper presents a schlieren optical visualization technique and its application in observation of the changes of intensity in real images. Schlieren optical visualization technique system is the unique technique because it produces a neutral image easily-interpretable image of refractive-index-gradient fields. The schlieren technique remains to be one of the most powerful techniques to visualize the flow and useful as a tool in order to observe the flow characteristics, fuel-air mixing, spray evaporation and flame development. The schlieren system provides a method to viewing the flow through the transparent media. This paper present the basics technique of schlieren system especially for Z-type and two mirror schlieren system. This optical visualization photography together with digital video camera will capture the detail spray evaporation, mixture formation and flame process.

• Periodical: Applied Mechanics and Materials (Volumes 773-774)
• Pages: 506-510
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.773-774.506
• Online since: July 2015
• Authors: Dahrum Samsudin*, Bukhari Manshoor, M.D. Anuar, M.S. Othman, Amir Khalid

References

[1] G. S. Settles, Schlieren and Shadowgraph Techniques. 2001, p.376.

[2] Amir Khalid, Keisuke Hayashi, Yoshiyuki Kidoguchi , Tomoaki Yatsufusa, Effect of air entrainment and oxygen concentration on endothermic and heat recovery process of diesel ignition, (2011) SAE Technical Papers, DOI: 10. 4271/2011-01-1834.

DOI: 10.4271/2011-01-1834

[3] Kidoguchi, Y., Miwa, K. Umemoto, K., Miwa, K., Omea, K., A study on Multi-hole Spray interference and Mixture formation in Diesel Combustion, Trans of JSAE, 39-3, pp.137-143, (2008).

[4] Yoshihiro Kobyashi, Kenji Amagai, TomohikoFuruhta and Masataki Arai., Behavior of PAH in a Doffusion Flame of Diesel Fuel, The Seventh International Conferance on Modeling and Diagnostics for Advanced Engine System (COMODIA 2008), July 28-31, 2008, Sappro, Japan.

[5] Amir Khalid and Bukhari Manshoor, Effect of High Swirl Velocity on Mixture Formation and Combustion Process of Diesel Spray, Applied Mechanics and Materials Vols. 229-231 (2012), Trans Tech Publications, Switzerland, pp.695-699.

DOI: 10.4028/www.scientific.net/amm.229-231.695

[6] Amir Khalid and Bukhari Manshoor, Analysis of Mixture formation and Flame Development of Diesel Combustion using a Rapid Compression Machine and Optical Visualization Technique, Applied Mechanics and Materials Vols. 315(2013).

DOI: 10.4028/www.scientific.net/amm.315.293

[7] Amir Khalid, N. Tamaldin, M. Jaat, M. F. M. Ali, B. Manshoor, Izzuddin Zaman, Impacts of biodiesel storage duration on fuel properties and emissions, Procedia Engineering, volume 68, 2013, Pages 225 – 230, Elsevier, 2013, DOI: 10. 1016/j. proeng. 2013. 12. 172.

DOI: 10.1016/j.proeng.2013.12.172

[8] Qian Wang, Advanced Optical and 3D Reconstruction Diagnostics for Combustion and Fluids Research", The University of Sheffield Horibe, N., Annen, T., Miyazaki, Y. and Ishiyama, T., "Heat Release Rate and NOx Formation Process in Two-Stage Injection Diesel PCCI Combustion in a Constant-Volume Vessel, SAE paper 2010-01-0608, (2010).

DOI: 10.4271/2010-01-0608

[9] Ishiyama, T., Miwa, K. and Horikoshi, O., A Study on Ignition Process of Diesel Spray, JSME International Journal, Series B, Vol. 38, No. 3, pp.483-489, (1995).

DOI: 10.1299/jsmeb.38.483