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Andor’s portfolio of intensified sCMOS, EMCCD and sCMOS cameras provide a wide range of high sensitivity, fast detection solutions for the fluid, flow and combustion diagnostics ‘home-builder’ Research community. These detectors benefit especially applications in the field of reactive and non-reactive flows, jets and flames, with analysis techniques including:
Andor high sensitivity cameras and modular spectrographs offer a comprehensive range of opto-mechanical interfaces, triggering and acquisition setup options to seamlessly integrate into a wide range of imaging and spectroscopy setups.
PLIF is used for the measurement of concentration/mole fraction of species such as Na, OH, NO, O2, CH, CO or acetone, localised temperature, velocity, and pressure:
Chemiluminescence is an other technique used for flame studies’. It is based on imaging chemically excited (as opposed to laser-excited like LIF/PLIF) species/radicals, e.g. OH*. Chemiluminescence is useful in situations where it is technically difficult or too costly to apply PLIF, e.g. optical engine diagnostics.
2D-PIV provides characterization of flow fields and turbulence dynamics in fluids. It relies on the imaging of light scattered by seeding particles added to the fluid/flow under analysis.
It uses a combination dual-pulse lasers and accurately synchronised detectors capable of dual imaging with extremely short inter-frame (e.g. sCMOS or gated sCMOS) to determine the two velocity components of features of interest in a single plane simultaneously. Variations include:
While CMOS/sCMOS cameras are detector of choice for PIV, gated intensified cameras such as iStar sCMOS can be used to better image (‘freeze’) supersonic flows, further remove strong unwanted background noise and enhance weak signals.
(Rotational) CARS is a non-linear spectroscopy technique used for combustion diagnostics including chemical species identification, species concentration measurement, but also to provide non-invasive map temperatures in combustion engines and flames.
Due to the weak nature of the CARS signal and need for multi-kHz acquisition rates, electron-multiplying EMCCDs are favoured for CARS thermometry
|Z. Chang et al||Chirped Probe Pulse Femtosecond Cars H2 Measurements At Elevated Pressure And Temperature||2022|
|D. R. Richardson et al||Femtosecond Coherent Anti-Stokes Raman Spectroscopy in a Cold-Flow Hypersonic Wind Tunnel for Simultaneous Pressure and Temperature Measurements||2022|
|N. S. Rodrigues et al||A Comparison of NO Laser-induced Fluorescence Models at conditions relevant to Supersonic and Hypersonic Flows||2022|
|S. Abe et al||Experimental investigation of natural convection and gas mixing behaviors driven by outer surface cooling with and without density stratification consisting of an air-helium gas mixture in a large-scale enclosed vessel||2022|
|M. L. Passarelli et al||Experimental Characterization of a Lean Prevaporized Premixed Combustor for Supersonic Transport Applications||2022|
|J. Saavedra et al||Flow conditioning system for tri-sonic high pressure aerothermal testing||2021|
|D. Baccarella et al||Isolator-combustor interactions in a circular model scramjet with thermal and non-thermal choking-induced unstart||2021|
|D. Fries et al||Turbulent mixing and trajectories of jets in a supersonic cross-flow with different injectants||2021|
|E. J. Nissen et al||Shock-induced kinetics and cellular structures of liquid nitromethane detonation||2021|
|A. Guemes et al||Experimental Assessment of RANS Models for Wind Load Estimation over Solar-Panel Arrays||2021|
|G. Xiong et al||Laser induced incandescence measurement of soot in ethylene buoyant turbulent diffusion flames under normal and reduced oxygen concentrations||2021|
|F. Bauer et al||Three-dimensional particle size determination in a laminar diffusion flame by tomographic laser-induced incandescence||2021|
|R. Castellanos et al||On the uncertainty of boundary-layer parameters from Ensemble PTV data||2021|
|J. J. Cerutti et al||Aerodynamic drag reduction by means of platooning configurations of light commercial vehicles: A flow field analysis||2021|
|G. Cafiero et al||Turbulence properties in jets with fractal grid turbulence||2021|