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Full-Text Articles in Mechanical Engineering
Two-Color Polarization Spectroscopy Measurement Of Nitric Oxide, Ziqiao Chang, Aman Satija, Robert P. Lucht
Two-Color Polarization Spectroscopy Measurement Of Nitric Oxide, Ziqiao Chang, Aman Satija, Robert P. Lucht
The Summer Undergraduate Research Fellowship (SURF) Symposium
Nitric Oxide (NO) is a greenhouse gas that contributes to smog and acid rain. Commercial combustion engines and turbines are significant sources of NO emission. Two-color Polarization Spectroscopy (PS) will be used to measure the collision-induced resonances of NO in gas mixtures. The effect of collision partners, such as He and Ar, on the line-shape of NO molecule will be studied. This experiment requires the use of two dye laser systems to generate 226nm beam from frequency mixing of 355nm and 622nm. This enhanced the scan range and improved the ease of operation. One dye laser will be used to …
Fluid Flow Thermometry Using Thermographic Phosphors, Gabriel J. Fenoglio, Humberto J. Detrinidad, Aman Satija, Alex D. Casey, Robert P. Lucht, Terrence R. Meyer
Fluid Flow Thermometry Using Thermographic Phosphors, Gabriel J. Fenoglio, Humberto J. Detrinidad, Aman Satija, Alex D. Casey, Robert P. Lucht, Terrence R. Meyer
The Summer Undergraduate Research Fellowship (SURF) Symposium
Phosphor thermometry is a non-intrusive thermometry technique that allows for spatially and temporally resolved surface temperature measurements. The thermographic method has been employed in a number of applications that include combustion, sprays, and gas flows. In the current work, we investigate the implementation of thermographic phosphors in liquid flows, which is of interest in a wide range of applications in heat transfer, fluid mechanics, and thermal systems. Zinc oxide doped with Zinc (ZnO:Zn) was the phosphor employed for experimentation due to its high emission intensity and insolubility. In order to explore this application, the phosphor powder was uniformly dispersed in …
Preliminary Testing Of Plasma-Induced Combustion, Ahmed Thalib Razi, Carson Slabaugh, Robert Lucht
Preliminary Testing Of Plasma-Induced Combustion, Ahmed Thalib Razi, Carson Slabaugh, Robert Lucht
The Summer Undergraduate Research Fellowship (SURF) Symposium
Plasma-induced combustion (PIC) has been shown to improve the reliability, efficiency, and delay time of ignition in flight systems like augmentors and scramjets. These high-velocity systems are mostly used in military applications, and improvement may help commercial viability. To understand this chemical process, the concentration of radicals, particularly H radicals, must be tracked through the flame using laser diagnostics. This requires a steady source of plasma-assisted combustion to be secured and well-understood. A plasma torch flowing partially premixed air and methane was installed and successfully operated, and preliminary testing was carried out. Primarily it was observed that PIC created stable …