Optical Visualization of Wideband Ultrasound Fields

1997 ◽  
pp. 385-390 ◽  
Author(s):  
Todd A. Pitts ◽  
Randall R. Kinnick ◽  
James F. Greenleaf
Keyword(s):  
Optical Visualization

MAGNETO-OPTICAL VISUALIZATION OF CRYSTAL TWINS IN TETRAGONAL ANTIFERROMAGNET Ca3Mn2Ge3O12

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-967-C8-968
Author(s):  
V. V. Eremenko ◽  
N. F. Kharchenko ◽  
S. V. Sofroneev ◽  
S. L. Gnatchenko ◽  
H. Le Gall ◽  
...  
Keyword(s):  
Optical Visualization

Polarization-optical visualization of eye inhomogeneities

2000 ◽  
Author(s):  
Maris Ozolinsh ◽  
Gunta Papelba
Keyword(s):  
Optical Visualization

Review of the Investigation of Fuel-Air Premixing and Combustion Process Using Rapid Compression Machine and Direct Visualization System

2013 ◽  
Vol 465-466 ◽  
pp. 265-269 ◽  
Author(s):  
Mohamad Jaat ◽  
Amir Khalid ◽  
Bukhari Manshoor ◽  
Siti Mariam Basharie ◽  
Him Ramsy
Keyword(s):  
High Speed ◽  
Combustion Engine ◽  
Early Stage ◽  
Combustion Process ◽  
Injection Pressure ◽  
Rapid Compression Machine ◽  
Mixture Formation ◽  
Visualization System ◽  
Optical Visualization ◽  
Rapid Compression

s :This paper reviews of some applications of optical visualization system to compute the fuel-air mixing process during early stage of mixture formation and late injection in Diesel Combustion Engine. This review has shown that the mixture formation is controlled by the characteristics of the injection systems, the nature of the air swirl and turbulence in thecylinder, and spray characteristics. Few experimental works have been investigated and found that the effects of injection pressure and swirl ratio have a great effect on the mixture formation then affects to the flame development and combustion characteristics.This paper presents the significance of spray and combustion study with optical techniques access rapid compression machine that have been reported by previous researchers. Experimental results are presentedin order to provide in depth knowledge as assistance to readers interested in this research area. Analysis of flame motion and flame intensity in the combustion chamber was performed using high speed direct photographs and image analysis technique. The application of these methods to the investigation of diesel sprays highlights mechanisms which provide a better understanding of spray and combustion characteristics.

Analysis of Mixture Formation and Flame Development of Diesel Combustion Using a Rapid Compression Machine and Optical Visualization Technique

2013 ◽  
Vol 315 ◽  
pp. 293-298 ◽  
Author(s):  
Amir Khalid ◽  
Bukhari Manshoor
Keyword(s):  
Fuel Injection ◽  
Injection Pressure ◽  
Exhaust Emissions ◽  
Combustion Characteristics ◽  
Diesel Combustion ◽  
Rapid Compression Machine ◽  
Mixture Formation ◽  
Optical Visualization ◽  
Flame Development ◽  
Rapid Compression

Mixture formation plays as a key element on burning process that strongly affects the exhaust emissions such as nitrogen oxide (NOx) and Particulate Matter (PM). The reductions of emissions can be achieved with improvement throughout the mixing of fuel and air behavior. Measurements were made in an optically-accessible rapid compression machine (RCM) with intended to simulate the actual diesel combustion related phenomena. The diesel combustion was simulated with the RCM which is equipped with the Denso single-shot common-rail fuel injection system, capable of a maximum injection pressure up to 160MPa. Diesel engine compression process could be reproduced within the wide range of ambient temperature, ambient density, swirl velocity, equivalence ratio and fuel injection pressure. The mixture formation and combustion images were captured by the high speed camera. Analysis of combustion characteristics and observations of optical visualization of images reveal that the mixture formation exhibit influences to the ignition process and flame development. Therefore, the examination of the first stage of mixture formation is very important consideration due to the fuel-air premixing process linked with the combustion characteristics. Furthermore, the observation of a systematic control of mixture formation with experimental apparatus enables us to achieve considerable improvements of combustion process and would present the information for fundamental understanding in terms of reduced fuel consumption and exhaust emissions.

scholarly journals Diagnostics of physiological processes in living tissues by the method of optical visualization of blood pulsation

2019 ◽  
Vol 62 (3) ◽  
pp. 266-271
Author(s):  
A.V. Belaventseva ◽  
Yu.N. Kulchin ◽  
R.V. Romashko ◽  
T.S. Zaporozhets ◽  
E.V. Persiyanova ◽  
...  
Keyword(s):  
Physiological Processes ◽  
Optical Visualization ◽  
Living Tissues
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