Application of the Tomographic Laser Doppler Anemometry (TDLA) to a fuel spray

Pfeifer, Christian; Bruzzese, C.; Fast, G.; Kühn, Dietmar; Class, Andreas G.

doi:10.1016/j.flowmeasinst.2011.06.011

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…Laser Doppler anemometry (LDA) is a well established diag nostic technique used in nonintrusive fluid flow measurements [1]. The popularity of this technique as an accurate measuring technique is evidenced by its wide range of application from laboratory to industrial environments [2][3][4][5][6]. Fundamental information regarding LDA measuring technique can be found in Yeh and Cummins [7], Rudd [8], Durst et al [9], Goldstein [10], Albrecht et al [11].…”

Section: Introductionmentioning

confidence: 99%

Micro analysis of fringe field formed inside LDA measuring volume

Ghosh¹,

Nirala

2016

Laser Phys.

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In the present study we propose a technique for micro analysis of fringe field formed inside laser Doppler anemometry (LDA) measuring volume. Detailed knowledge of the fringe field obtained by this technique allows beam quality, alignment and fringe uniformity to be evaluated with greater precision and may be helpful for selection of an appropriate optical element for LDA system operation. A complete characterization of fringes formed at the measurement volume using conventional, as well as holographic optical elements, is presented. Results indicate the qualitative, as well as quantitative, improvement of fringes formed at the measurement volume by holographic optical elements. Hence, use of holographic optical elements in LDA systems may be advantageous for improving accuracy in the measurement.

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Section: Introductionmentioning

confidence: 99%

Micro analysis of fringe field formed inside LDA measuring volume

Ghosh¹,

Nirala

2016

Laser Phys.

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“…Since the first application of the LDA method by Yeh and Cummins [1], the method has continuously been developed and extended [2][3][4][5]. The popularity of this technique as an accurate measuring technique is evidenced by its wide range of applications from laboratory to industrial environments [6][7][8][9][10]. Recent new developments in optoelectronic devices provide a more accurate measurement, error free outputs, automation capabilities and other benefits to the LDA user [11].…”

Section: Introductionmentioning

confidence: 99%

LDA optical setup using holographic imaging configuration

Ghosh

Nirala

2015

Laser Phys.

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This paper describes one of the possible ways for improving fringe quality at LDA measuring volume using a holographic imaging configuration consisting of a single hololens. For its comparative study with a conventional imaging configuration, a complete characterization of fringes formed at the measurement volume by both the configuration is presented. Results indicate the qualitative as well as quantitative improvement of the fringes formed at measurement volume by the holographic imaging configuration. Hence it is concluded that use of holographic imaging configuration for making LDA optical setup is a better choice than the conventional one.

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“…Mie Scattering is another laser technique that has been used by [23][24][25][26][27] to investigate the characteristics of sprays generated by flash-boiling, pneumatic atomization, slit, piezo-electric, and port fuel injectors respectively. While Laser Induced Fluorescence (LIF) was used to visualize spray atomization [28][29], in addition to the Nd:YAG laser [14,21,[30][31][32][33][34][35][36][37] and other laser techniques mentioned in [12,[38][39][40][41][42][43][44][45][46][47][48]. Shadowgraphs are used as well in spray atomization investigations either individually [49][50][51][52] or accompanied by another optical technique such as laser-based techniques [25,28] and high speed camera [53].…”

Section: Introductionmentioning

confidence: 99%

Quantitative spray analysis of diesel fuel and its emulsions using digital image processing

Faik

Zhang

2015

EPJ Web of Conferences

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Abstract. In the present work, an experimental investigation of spray atomization of different liquids has been carried out. An air-assist atomizer operating at low injection pressures valued (4 and 6 bar) has been used to generate sprays of (diesel fuel, 5, 10, and 15% water-emulsified-diesel), respectively. A Photron-SA4 high speed camera has been used for spray imaging at 2000 fps. 20 time intervals (from 5 to 100 ms with 5 ms time difference) are selected for analysis and comparison. Spray macroscopic characteristics (spray penetration, dispersion, cone angle, axial and dispersion velocities) have been extracted by a proposed technique based on image processing using Matlab, where the maximum and minimum (horizontal and vertical) boundaries of the spray are detected, from which the macroscopic spray characteristics are evaluated. The maximum error of this technique is (1.5% for diesel spray) and a little bit higher for its emulsions.

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Application of the Tomographic Laser Doppler Anemometry (TDLA) to a fuel spray

Cited by 6 publications

References 10 publications

Micro analysis of fringe field formed inside LDA measuring volume

Micro analysis of fringe field formed inside LDA measuring volume

LDA optical setup using holographic imaging configuration

Quantitative spray analysis of diesel fuel and its emulsions using digital image processing

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