Search Results - "LEIPERTZ, A"

Interactions of phase equilibria, jet fluid dynamics and mass transfer during supercritical antisolvent micronization by Reverchon, E., Torino, E., Dowy, S., Braeuer, A., Leipertz, A.

“…Supercritical antisolvent (SAS) precipitation has been successfully used in the micronization of several compounds. Nevertheless, the role of high-pressure…”
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Thermal Conductivity of Ionic Liquids: Measurement and Prediction by Fröba, A. P., Rausch, M. H., Krzeminski, K., Assenbaum, D., Wasserscheid, P., Leipertz, A.

“…This study reports thermal-conductivity data for a series of [EMIM] (1-ethyl-3-methylimidazolium)-based ionic liquids (ILs) having the anions [NTf 2 ]…”
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Structure of evaporating single- and multicomponent fuel sprays for 2nd generation gasoline direct injection by Zigan, L., Schmitz, I., Flügel, A., Wensing, M., Leipertz, A.

“…In the present paper the effect of fuel properties on spray formation and evaporation was investigated for a hollow-cone spray of a piezoelectric injector for…”
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Dropwise condensation heat transfer on ion implanted aluminum surfaces by Rausch, M.H., Fröba, A.P., Leipertz, A.

“…Stable dropwise condensation (DWC) of saturated steam has been achieved on an aluminum alloy Al 6951 disc with an average surface finish of about 0.15 μm by…”
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Application of the tracer combination TEA/acetone for multi-parameter laser-induced fluorescence measurements in IC engines with exhaust gas recirculation by Lind, S., Trost, J., Zigan, L., Leipertz, A., Will, S.

“…The present study introduces an advanced measurement technique for multi-parameter imaging in optically accessible IC engines which is based on two planar…”
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A novel heat flux burner system to determine the laminar flame velocity of liquid fuels by Knorsch, T., Demmelmeyer, M., Wensing, M., Leipertz, A.

“…This article addresses burner design and flame measurement based on the heat flux method which is among the most precise ways of determining the laminar…”
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Simultaneous measurements of fuel vapor concentration and temperature in a flash‐boiling propane jet using laser‐induced gratings by Roshani, B., Flügel, A., Schmitz, I., Kozlov, D. N., Seeger, T., Zigan, L., Kiefer, J., Leipertz, A.

“…To enhance the efficiency of direct injection engines, the understanding of the combustible mixture formation after a liquid fuel spray is injected is crucial;…”
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Economical aspects of the improvement of a mechanical vapour compression desalination plant by dropwise condensation by Lukic, N., Diezel, L.L., Fröba, A.P., Leipertz, A.

“…By applying ion implantation on metallic surfaces for the adjustment of dropwise condensation (DWC), the condensation heat transfer coefficient can be…”
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Dropwise condensation of steam on ion implanted titanium surfaces by Rausch, M.H., Leipertz, A., Fröba, A.P.

“…Stable dropwise condensation of steam was achieved by ion beam implantation of N + on titanium surfaces stabilized by a preoxidation procedure. It is pointed…”
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Analysis of the supercritical antisolvent mechanisms governing particles precipitation and morphology by in situ laser scattering techniques by Braeuer, A., Dowy, S., Torino, E., Rossmann, M., Luther, S.K., Schluecker, E., Leipertz, A., Reverchon, E.

“…► Time scale model to describe the SAS process. ► Model is based on experimental investigations. ► Experimental investigations performed in situ via in house…”
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Spatially resolved flame zone classification of a flame spray nanoparticle synthesis process by combining different optical techniques by Kilian, D., Engel, S., Borsdorf, B., Gao, Y., Kögler, A.F., Kobler, S., Seeger, T., Will, S., Leipertz, A., Peukert, W.

“…Flame spray synthesis of silica nanoparticles is characterized by a set of complementary optical techniques. By means of laser-sheet based Mie scattering…”
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Local fuel concentration measurements for mixture formation diagnostics using diffraction by laser-induced gratings in comparison to spontaneous Raman scattering by Kiefer, J., Kozlov, D. N., Seeger, T., Leipertz, A.

“…The potential of the laser‐induced gratings (LIGs) technique for the determination of fuel concentrations is investigated in comparison to the well‐established…”
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Pressure influence on the flame front curvature of turbulent premixed flames: comparison between experiment and theory by Soika, A., Dinkelacker, F., Leipertz, A.

“…In gas turbines, lean premixed combustion is executed in strongly turbulent flow fields and under high-pressure to allow large thermal loads within small-size…”
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The influence of pressure on the control of premixed turbulent flames using an electric field by Sakhrieh, A., Lins, G., Dinkelacker, F., Hammer, T., Leipertz, A., Branston, D.W.

“…Previous investigations of the effects of electric fields on flames have shown the potential for stabilizing flames and reducing emissions with comparatively…”
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Simultaneous determination of the composition and temperature gradients in the vicinity of boiling bubbles in liquid binary mixtures using one-dimensional Raman measurements by Knauer, O. S., Lang, M. C., Braeuer, A., Leipertz, A.

“…The ability to transport large quantities of heat by nucleate boiling is reduced for mixtures compared to their pure components. To study the heat and mass…”
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Increase of the stimulated Raman scattering threshold at droplets by spectral broadening of nanosecond laser pulses by Hankel, R. F., Braeuer, A., Leipertz, A.

“…We show that the threshold of stimulated Raman scattering (SRS) from single micro‐droplets increases with the bandwidth of the pulsed excitation laser…”
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CO2 partial density distribution during high-pressure mixing with ethanol in the supercritical antisolvent process by Dowy, S., Braeuer, A., Schatz, R., Schluecker, E., Leipertz, A.

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Dependence of the stimulated Raman scattering threshold in droplets on the temporal stretching of a nanosecond laser pulse by Malarski, A., Leipertz, A.

“…For linear Raman spectroscopy in micro‐droplets the excitation laser energy and therefore the signal strength is limited either by the threshold for the…”
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Laser analyses of mixture formation and the influence of solute on particle precipitation in the SAS process by Dowy, S., Braeuer, A., Reinhold-López, K., Leipertz, A.

“…We report on the process of mixture formation and the influence of the solute paracetamol onto the phase behaviour and the precipitation mechanism of the…”
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Thermophysical Properties of the Refrigerant Mixtures R417A and R417B from Dynamic Light Scattering (DLS) by Heller, A., Rausch, M. H., Flohr, F., Leipertz, A., Fröba, A. P.

“…Dynamic light scattering (DLS) has been used for the measurement of several thermophysical properties of the refrigerant mixtures R417A (50 % by mass…”
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