Temperature measurement of a premixed radially symmetric methane flame jet using the Mach–Zehnder Interferometry

Ahmadi, Mehdi; Saffar‐Avval, Majid; Yousefi, Tooraj; Goharkhah, Mohammad; Nasr, Babak; Ashjaee, Mehdi

doi:10.1016/j.optlaseng.2011.02.020

Cited by 18 publications

(6 citation statements)

References 31 publications

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“…Optical interferometry based on laser has proved to be nonintrusive and full-field measurement with high precision [5,6,7]. Ahmadi et al [6] visualized the temperature profile of laminar flame jet using Mach-Zehnder interferometry (MZI).…”

Section: Introductionmentioning

confidence: 99%

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Temperature Measurement of An Inclined Cylinder Using Optical Interferometry

Zhu¹,

Dai²,

Cheng³

et al. 2015

Advances in Intelligent Systems Research

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Abstract-Temperature profile of an inclined elliptic cylinder is studied experimentally using optical interferometry. Interferograms of the elliptical cylinder with an isothermal surface were recorded by He-Ne laser. The cylinder were placed with its major axis inclined 30° with respect to the horizontal. Temperature profile around the cylinder was quantitatively reconstructed from the locations of fringe center. The influence of the inclination on the temperature profile around the cylinder was discussed. The results reveal that no symmetry can be found from the obtained interferogram. Optical interferometry is successfully developed to measure the temperature profile around an elliptic cylinder.

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Section: Introductionmentioning

confidence: 99%

“…Ahmadi et al [6] visualized the temperature profile of laminar flame jet using Mach-Zehnder interferometry (MZI). This interferometry is very sensitive to vibration and temperature change.…”

Section: Introductionmentioning

confidence: 99%

Temperature Measurement of An Inclined Cylinder Using Optical Interferometry

Zhu¹,

Dai²,

Cheng³

et al. 2015

Advances in Intelligent Systems Research

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“…Interferograph, shadowgraph and Schlieren techniques exploit the deflection of light due to variation of the refractive index as a result of density non-uniformities in the enflamed area. The interferograph (e.g., [11]) gives an indication of the density field or temperature itself and it is only applicable to two-dimensional flames. Shadowgraph indicates the field of second derivative of density.…”

Section: Introductionmentioning

confidence: 99%

Turbulent flame boundary and structure detection in an optical DISI engine using tracer-based two-line PLIF technique

Attar

Zhao

Herfatmanesh

et al. 2015

Experimental Thermal and Fluid Science

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"Turbulent flame boundary and structure detection in an optical DISI engine using tracer-based two-line PLIF technique", Experimental Thermal and Fluid Science, AbstractDesign and development of new combustion systems for Spark Ignition Direct Injection (DISI) engines requires thorough understanding of the combustion flame as it develops from the electric discharge and propagates across the combustion chamber. The main purpose of this work was to develop an experimental setup capable of investigating the premix turbulent flame boundary and structure inside the combustion chamber of a DISI engine. For this purpose the tracer-based two-line Planar Laser Induced Fluorescence (PLIF) technique was set up. In order to have a thermometry technique independent of the photophysical model of dopant tracer, a specially designed Constant Volume Chamber (CVC) was utilized for quasi in situ calibration measurement. The thermometry technique was evaluated by measurements of average in-cylinder charge temperature during compression stroke for both motoring and firing cycles and comparing the results with temperature values calculated from in-cylinder pressure data. The developed technique was successfully implemented to detect flame structure during combustion process in an optical engine. The present study demonstrated that as the two-line PLIF thermal images are independent of species concentration and flame luminosity they can be utilized as an accurate means for flame segmentation. The proposed technique has the potential to be utilized for study of premix flames in non-homogeneously mixed systems.

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“…Some of optical techniques used for temperature measurement are spectroscopic methods in which the emitted or absorbed electromagnetic radiation of a gas is measured, spectral radiation methods in which the temperature of an opaque surface is measured by comparison with the Stefan-Boltzmann or Planck radiation laws, a scattered radiation technique in which the Doppler broadening of a light beam is measured to get the temperature level and index of refraction methods in which the index of refraction or spatial derivatives of the index of refraction of a medium is measured and from this temperature field is obtained [13]. Some of the index of refraction methods include Lau phase interferometry [14], Talbot interferometry [15,16], Speckle shearing interferometry [17] and Mach-Zehnder Interferometry (MZI) [18]. These techniques are used to obtain temperature field of transparent fluids by means of index of refraction or its spatial derivatives.…”

Section: Introductionmentioning

confidence: 99%

“…It was also inferred that at very high distances from the burner exit the flame is highly influenced by buoyant effect and reaching to accurate temperature fields is difficult. Ahmadi et al [18] studied temperature measurement of a premixed axisymmetric flame. Mach-Zehnder Interferometry technique was applied to obtain interferograms of the flame.…”

Section: Introductionmentioning

confidence: 99%