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Sukesh Roy
Texas A&M University
243Publications
31H-index
3,275Citations
Publications 243
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#1Paul S. HsuH-Index: 13
#2Mark Gragston (UT: University of Tennessee)H-Index: 4
Last.Sukesh RoyH-Index: 31
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#2Cary SmithH-Index: 2
Last.Sukesh RoyH-Index: 31
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#1Stephen W. Grib (FFO: Wright-Patterson Air Force Base)
#2Naibo JiangH-Index: 26
Last.Sukesh RoyH-Index: 31
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Two-dimensional, Rayleigh-scattering-based temperature measurements utilizing a turbulent jet flame were performed in this study at 100-kHz frequency. This tenfold increase in measurement speed—compared to the 10-kHz frequency considered previously—facilitated identification and tracking of several highly dynamic flow features. Findings of this study demonstrate that flow-feature dynamics become uncorrelated qualitatively and quantitatively prior to an elapse of 100 μs between successive measure...
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#1Stephen W. Grib (FFO: Wright-Patterson Air Force Base)
#2Paul S. HsuH-Index: 13
Last.Sukesh RoyH-Index: 31
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Two-photon-absorption laser-induced fluorescence of Kr was explored using both nanosecond- and femtosecond-duration laser excitation sources. Fluorescence signals following two-photon excitation at two wavelengths (212.56 nm and 214.77 nm) were compared while varying laser pulse duration, energy, and excitation wavelength as well as pressure and Kr mole fraction in mixtures with nitrogen. Our findings show that stronger fluorescence was observed when the excitation wavelength was tuned to 212.56...
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#1K. Arafat Rahman (Purdue University)H-Index: 2
#2Venkat Athmanathan (Purdue University)H-Index: 1
Last.Sukesh RoyH-Index: 31
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Broadband femtosecond (fs) two-photon laser-induced fluorescence (TP-LIF) of the B1Σ+←X1Σ+, Hopfield–Birge system of carbon monoxide (CO) is believed to have two major advantages compared to narrowband nanosecond excitation. It should (i) minimize the effects of pressure-dependent absorption line broadening and shifting, and (ii) produce pressure-independent TP-LIF signals as the effect of increased quenching due to molecular collisions is offset by the increase in number density. However, there...
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#1Venkat Athmanathan (Purdue University)H-Index: 1
#2Jordan Fisher (Purdue University)H-Index: 1
Last.Sukesh RoyH-Index: 31
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#1Pooja SinghH-Index: 1
#2Anil K. PatnaikH-Index: 12
Last.Yu. V. RostovtsevH-Index: 29
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#1Naibo JiangH-Index: 26
#2Paul S. HsuH-Index: 13
Last.Sukesh RoyH-Index: 31
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We report the high-speed imaging of multi-species and multi-parameter combustion diagnostics for turbulent non-premixed jet flames using a three-legged burst-mode laser system. Simultaneous OH/CH2O planar laser-induced fluorescence and Rayleigh-scattering imaging measurements at a 10-kHz rate are obtained. OH and CH2O concentrations, flame temperatures, and heat-release rates are simultaneously acquired in two-dimensions at 10 kHz.
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