Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Capture of cenospheres by evaporating drops
Abstract The capture efficiency of evaporating cloud drops between 60 and 100 μm radius has been measured for 2 μm radius lithium carbonate hollow particles (cenospheres). Since the effective particle density is low compared to a 2-μm solid particle the cenospheres have reduced sedimentation speeds and a negligible inertial capture efficiency. The particles are sufficiently large (Kn = 0.03) so that the phoretic theory in the slip regime (Kn < 0.1) should apply. The measured capture efficiencies are significantly above the theoretical computations. There is some evidence to suggest that thermophoresis may be underestimated in the computations. This assessment is contigent on attributing the discrepancy between theory and experiment to the theoretical description of phoresis or its application to our experiment.
Capture of cenospheres by evaporating drops
Abstract The capture efficiency of evaporating cloud drops between 60 and 100 μm radius has been measured for 2 μm radius lithium carbonate hollow particles (cenospheres). Since the effective particle density is low compared to a 2-μm solid particle the cenospheres have reduced sedimentation speeds and a negligible inertial capture efficiency. The particles are sufficiently large (Kn = 0.03) so that the phoretic theory in the slip regime (Kn < 0.1) should apply. The measured capture efficiencies are significantly above the theoretical computations. There is some evidence to suggest that thermophoresis may be underestimated in the computations. This assessment is contigent on attributing the discrepancy between theory and experiment to the theoretical description of phoresis or its application to our experiment.
Capture of cenospheres by evaporating drops
Leong, K.H. (Autor:in) / Ochs, Harry T. III (Autor:in) / Beard, K.V. (Autor:in)
Atmospheric Environment ; 17 ; 1797-1801
10.05.1982
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch