Investigation of BAM:<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:msup><mml:mrow><mml:mtext>Eu</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:math> particles as a tracer for temperature imaging in flames

Yin, Zhiyao; Fond, Benoît; Eckel, Georg; Abram, Christopher; Meier, Wolfgang; Boxx, Isaac; Beyrau, Frank

doi:10.1016/j.combustflame.2017.06.005

Cited by 15 publications

(6 citation statements)

References 18 publications

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“…Note that this is not a concern for short residence times of the particles at high temperatures when used in flows. BAM:Eu 2+ was found to have unchanged luminescence properties after exposure to the high-temperature reaction zones of a non-premixed hydrogen flame (0.1 s above 1700 K) [19].…”

Section: Introductionmentioning

confidence: 97%

Investigation of the tin-doped phosphor (Sr,Mg)₃(PO₄)₂:Sn²⁺ for fluid temperature measurements

Fond

Abram

Pougin

et al. 2019

Opt. Mater. Express

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The photoluminescence properties of the phosphor (Sr,Mg) 3 (PO 4) 2 :Sn 2+ were investigated for luminescence thermometry in fluids. The luminescence emission intensity at 300 K is on the order of 10 6 photons per particle and the lifetime is 26 µs. With increasing temperature, the wide emission band exhibits a pronounced blue shift which can be exploited for temperature imaging using a two-colour ratiometric approach. The measured temperature sensitivity in an imaging configuration is 0.6%/K at 300 K. The T 50 quenching temperature is 650 K, similar to the phosphor BaMgAl 10 O 17 :Eu 2+ , but the estimated temperature sensitivity at 700 K is a factor 7 higher (0.36%/K). Moreover, the excitation laser fluence has a negligible effect on the measured temperature (0.6 K for a 10% change in the fluence), a five-to-tenfold improvement over phosphors previously investigated for fluid thermometry. The phosphor (Sr,Mg) 3 (PO 4) 2 :Sn 2+ therefore offers significant improvements for thermometry applications in turbulent flows in the 300-900 K range.

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Section: Introductionmentioning

confidence: 97%

Investigation of the tin-doped phosphor (Sr,Mg)₃(PO₄)₂:Sn²⁺ for fluid temperature measurements

Fond

Abram

Pougin

et al. 2019

Opt. Mater. Express

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“…Aerosol phosphor thermometry (APT) is a temperature imaging technique that relies on temperature-dependent, laser-excited luminescence emission from small particles using a scattering-referenced approach. This measurement represented a significant increase in the maximum temperature measured using APT, which previously had been limited to less than 1000 K [3], and demonstrated the potential for APT in combustion-relevant flows. Although the previous Ce:CSSO measurements were successful in increasing the maximum temperature measurable with APT, there were a few drawbacks to the method.…”

Section: Introductionmentioning

confidence: 71%

“…The temperature measurement precision index (standard deviation), s T , is related to the temperature sensitivity and ratio precision index by equation (3). One can relate the ratio precision index to the signal precision indices (s S1 and s S2 ) through first order uncertainty propagation by…”

Section: Apt Diagnostic Performance Predictionsmentioning

confidence: 99%

Characterization of Ce:CSSO, Pr:CSSO, and co-doped Ce,Pr:CSSO phosphors for aerosol phosphor thermometry

Herzog¹,

Witkowski²,

Rothamer³

2021

Meas. Sci. Technol.

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The phosphor Ce:Ca3Sc2Si3O12(Ce:CSSO) was recently investigated for aerosol phosphor thermometry (APT) and shown to be capable of temperature imaging up to at least 1400 K. To date, no thorough characterization of the temperature dependent emission properties of the phosphor has been performed up to 1400 K. Additionally, due to limited sensitivity over certain temperature ranges continuous temperature imaging from 300 to 1400 K was not possible. Here, cerium and praseodymium doped into CSSO are investigated to address these limitations. Singly-doped Ce:CSSO and Pr:CSSO, and co-doped Ce,Pr:CSSO phosphor samples were studied. Emission lifetimes and quenching behavior were characterized in a tube furnace for each phosphor. Results from the singly-doped phosphors were used to interpret the co-doped phosphor results. The phosphor characterization data was used to estimate thermometry performance at temperatures relevant to low-temperature ignition studies in engines. The proposed diagnostic uses a combination of co-doped APT, host-referenced APT, and scattering-referenced APT approaches to increase the range over which high-precision temperature measurements can be made. Characterization results include the first reported measurements of luminescence lifetimes for Ce:CSSO and Pr:CSSO at temperatures up to 1400 K, and the highest reported quenching temperature for a phosphor using 4f5d emission (1230 K for Ce:CSSO). Furnace measurements showed a normalized temperature-sensitivity of > 0.25 % K−1 from room temperature to 1400 K for at least one diagnostic approach using the co-doped Ce,Pr:CSSO phosphor. Estimates suggest that the co-doped Ce,Pr:CSSO phosphor is feasible for APT at temperatures ranging from 300 to 925 K and 1030 to at least 1400 K, with better than 40-K single-shot precision. The performance of Ce:CSSO and Ce,Pr:CSSO are similar throughout the investigated temperature range.

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“…The temperature of a wake flow ranged from 100 • C to 150 • C, while the temperature of a surrounding air was a room temperature. Fond et al [182,234,235] also reported the relationship between the number density of particles, luminescence intensity, and temperature. Van Lipzig et al [188] measured the gas temperature in a high-pressure vessel using BaMgAl 10 O 17 :Eu and evaluated the precision in the measurement, with results showing 30 K at 393 K and 60 K at 650 K. Lee et al [169] measured the turbulent heat flux in a non-reacting round jet, also using BaMgAl 10 O 17 :Eu.…”

Section: Gaseous Flowmentioning

confidence: 99%

Particle-based temperature measurement coupled with velocity measurement

Someya

2020

Meas. Sci. Technol.

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This review article focuses on the simultaneous particle-based measurement of velocity and temperature. The thermographic PIV with phosphor particles is included in the scope. However, there are many other dye-doped particles that can be used in these methods, some of which are more suitable for measurements of liquid flow and low temperature flow.This review summarized the methods for fabrication, applications, optical properties, and limitations of temperature sensitive particles, and the extensive coverage of the field provided by this review renders it useful as a base for further experimentation. Dopant sensor molecules are also summarized in this review make it possible to fabricate functional particles that are suitable for the aims of an individual researcher. These particles are excited by a UV-laser and several kinds of them can be excited using a common green laser.Several approaches to velocity and temperature measurements, mono-color intensity-based method, the ratiometric method and the lifetime method are explained. The combined methods are limited by velocity conditions; therefore, decoupling the temperature measurement from the velocity measurement is sometimes reasonable. However, combined measurements were also considered in this review.There are many possible sources of error when using these methods; however, the most important factor is the following capacity of the particles, especially in gaseous flow. The deformation of particle images because of the long exposure inherent in the lifetime-based method was discussed quantitatively.Applications of liquid/gas/multiphase flow measurements were introduced. Micro capsules or microbeads are often used for a liquid flow and a microchannel flow. Many previous works use a phosphor for a high temperature gas flow. Uncertainties are different on a case-by-case basis. Accurate calibration is very important in suppressing errors. The development of easy calibration methods or calibration free methods while retaining high accuracy is an important issue in future work.

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Investigation of BAM:Eu2+ particles as a tracer for temperature imaging in flames

Cited by 15 publications

References 18 publications

Investigation of the tin-doped phosphor (Sr,Mg)₃(PO₄)₂:Sn²⁺ for fluid temperature measurements

Investigation of the tin-doped phosphor (Sr,Mg)₃(PO₄)₂:Sn²⁺ for fluid temperature measurements

Characterization of Ce:CSSO, Pr:CSSO, and co-doped Ce,Pr:CSSO phosphors for aerosol phosphor thermometry

Particle-based temperature measurement coupled with velocity measurement

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Investigation of BAM:Eu2+ particles as a tracer for temperature imaging in flames

Cited by 15 publications

References 18 publications

Investigation of the tin-doped phosphor (Sr,Mg)3(PO4)2:Sn2+ for fluid temperature measurements

Investigation of the tin-doped phosphor (Sr,Mg)3(PO4)2:Sn2+ for fluid temperature measurements

Characterization of Ce:CSSO, Pr:CSSO, and co-doped Ce,Pr:CSSO phosphors for aerosol phosphor thermometry

Particle-based temperature measurement coupled with velocity measurement

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Product

Resources

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Investigation of the tin-doped phosphor (Sr,Mg)₃(PO₄)₂:Sn²⁺ for fluid temperature measurements

Investigation of the tin-doped phosphor (Sr,Mg)₃(PO₄)₂:Sn²⁺ for fluid temperature measurements