Thermographic phosphors for thermometry: A survey of combustion applications

Aldén, Marcus; Omrane, Alaa; Richter, Mattias; Särner, Gustaf

doi:10.1016/j.pecs.2010.07.001

Cited by 278 publications

(150 citation statements)

References 157 publications

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“…Refs. [7][8][9]. These experiments usually involve probing the phosphor in aggregated powder form, placed in a crucible or deposited as a layer on a substrate.…”

mentioning

confidence: 99%

On the characterisation of tracer particles for thermographic particle image velocimetry

2015

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“…Refs. [7][8][9]. These experiments usually involve probing the phosphor in aggregated powder form, placed in a crucible or deposited as a layer on a substrate.…”

mentioning

confidence: 99%

On the characterisation of tracer particles for thermographic particle image velocimetry

2015

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“…Despite the numerous applications of this technique to combustion (Kashdan and Bruneaux 2011;Alden et al 2011;Brubach et al 2013), some authors have studied how the surrounding environment can alter the spectroscopic properties of these particles. As an example, Brubach et al (2013) investigated the influence of the dopant concentrations, laser energy, surrounding gas composition and pressure rise on a thermographic phosphor.…”

Section: Introductionmentioning

confidence: 99%

“…However, the rotating flame holder raises some questions on the data analysis: the classical point-wise laser excitation is likely to fail if the displacement of the moving target during the phosphorescence decay is larger than the typical size of the illuminated area. Several studies on moving surfaces have been reported, and the classical strategy consists in using phosphors with fast decay lifetimes (Mannick et al 1987;Allison et al 1988;Tobin et al 1990;Alden et al 2011). Thus, the object can be considered as a quasi-static object during the collection process.…”

Section: Introductionmentioning

confidence: 99%

Phosphor thermometry on a rotating flame holder for combustion applications

et al. 2018

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. AbstractThis study presents a method to measure wall temperatures of a rotating flame holder, which could be used as a combustion control device. Laser-induced phosphorescence is found to be a reliable technique to gather such experimental data. The paper first investigates how the coating (thickness, emissivity and lifetime) influence the flame stabilization. While the low thermal conductivity of the coating is estimated to induce a temperature difference of only 0.08-0.4 K, the emissivity increases by 40% . Nevertheless, the transient and steady-state flame locations are not affected. Second, because temperature measurements on the rotating cylinder are likely to fail due the long phosphor lifetimes, we modify the classical point-wise arrangement. We propose to illuminate a larger area, and to correct the signal with a distortion function that accounts for the displacement of the target. An analytical distortion function is derived and compared to measured ones. It shows that the range of measurements is limited by the signal extinction and the rapid distortion function decay. A diagram summarizes the range of operating conditions where measurements are valid. Finally, these experimental data are used to validate direct numerical simulations. Cylinder temperature variations within the precision of these measurements are shown not to influence the flame location, but larger deviations highlight different trends for the two asymmetric flame branches.

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“…The tracer material is chemically inert and able to survive in reactive, high temperature environments [12,13], and for many phosphors the emission is insensitive to pressure and oxygen quenching. In addition, many thermographic phosphors have relatively broad excitation spectra allowing direct excitation with solid-state lasers, and their subsequent emission is often in the visible range with a high quantum yield, permitting the use of non-intensified cameras.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, many thermographic phosphors have relatively broad excitation spectra allowing direct excitation with solid-state lasers, and their subsequent emission is often in the visible range with a high quantum yield, permitting the use of non-intensified cameras. The general properties of thermographic phosphors and their applications can be found in two excellent reviews [12,13].…”

Section: Introductionmentioning

confidence: 99%

High-speed planar thermometry and velocimetry using thermographic phosphor particles

et al. 2013

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Simultaneous gas-phase temperature and velocity imaging using micrometer-size thermographic phosphor particles seeded into the flow is demonstrated at a 3 kHz repetition rate. The velocity field is measured using a standard particle image velocimetry approach, while the temperature is determined from the temperature sensitive phosphorescence emission of the particles following excitation at 355 nm. Since the particles are very small, they rapidly assume the temperature and velocity of the surrounding gas. A single shot temperature precision of better than 5 % was achieved at 500 K. Time-resolved measurements in the wake of a heated cylinder are presented, demonstrating the utility of these imaging diagnostics to observe transient, coupled heat and mass transfer phenomena.

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Thermographic phosphors for thermometry: A survey of combustion applications

Cited by 278 publications

References 157 publications

On the characterisation of tracer particles for thermographic particle image velocimetry

On the characterisation of tracer particles for thermographic particle image velocimetry

Phosphor thermometry on a rotating flame holder for combustion applications

High-speed planar thermometry and velocimetry using thermographic phosphor particles

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