Nucleation pulse measurements for water vapor at elevated temperatures

Hruby´, J.; Hosˇek, J.; Blaha, J.; Marsˇı´k, F.
August 2000
AIP Conference Proceedings;2000, Vol. 534 Issue 1, p237
Academic Journal
At elevated temperatures, droplet growth becomes very fast. We present a new method to generate a nucleation pulse using a shock tube. This method is particularly suitable for nucleation and growth studies at high-temperature conditions, because the falling edge of the nucleation pulse is very sharp. A comparison of the wave-based methods to generate a nucleation pulse is given. Preliminary results for water-argon measurements are discussed.


Related Articles

  • Nucleation of water vapor in methane at high pressure. Peeters, P.; van Dongen, M. E. H. // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p67 

    Preliminary experimental results of nucleation of water vapor in methane at high pressure are presented. The results are obtained by applying the nucleation pulse method, using a modified shock tube. The nucleation conditions were taken at two different temperatures (250 K and 240 K) and three...

  • Growth of homogeneously nucleated water droplets: A quantitative comparison of experiment and theory. Fladerer, Alexander; Strey, Reinhard // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p495 

    A nucleation pulse chamber was used to homogeneously nucleate water droplets the growth of which was examined under precisely controlled conditions. Quantitative agreement between the measured experimental data and growth calculations according to the theoretical framework by Fuchs and Sutugin...

  • Use of a turbulent mixing CNC to study the influence of composition and vapor properties on heterogenous nucleation. Hopke, Philip K.; Lee, D. W.; Mavliev, Rashid; Wang, Hwa-Chi // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p139 

    A new method for changing the supersaturation in the Turbulent Mixing CNC has been developed and used to study the influence of composition and vapor properties on heterogeneous nucleation. Supersaturation was controlled by changing the condensing vapor pressure in nozzle flow by saturating only...

  • Quantum mechanical treatment on the critical energy in ion-induced nucleation of water vapor. Sakiyama, Kaname; Takano, Hiroshi; Tomida, Hiroyuki; Itoh, Masayuki // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p225 

    The properties of ion-induced nucleation regarding super-saturation ratio (S = 7,9) were investigated with the combination of Monte-Calro simulation and ab initio calculation method. The free energy differences were calculated by ab initio method according to the arrangement of molecules in an...

  • Nucleation rate changes with the admixture contain grows. I. The case of the cigar like phase state diagrams. Anisimova, Lyubov; Pinaev, Victor // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p205 

    Using the obvious relation for the nucleation rate surfaces and the diagrams for phase equilibrium is the main idea of the present consideration. The nucleation rate surfaces for the cigar like phase state diagrams are constructed. It is concluded: 1) Increasing of admixture contains leads the...

  • Molecular simulation of ion-induced nucleation in water vapor. Matsumoto, Mitsuhiro; Ohguchi, Koji; Yasuoka, Kenji // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p151 

    Molecular dynamics simulation is carried out to investigate ion-induced nucleation in water vapor. Comparison is made between ions with similar size and opposite electric charge, a potassium ion and a chloride ion. At large supersaturation ratios, no qualitative difference is discernible in...

  • Thermodynamics of homogeneous nucleation of ice particles in the polar summer mesosphere. Zasetsky, A. Y.; Petelina, S. V.; Svishchev, I. M. // Atmospheric Chemistry & Physics;2009, Vol. 9 Issue 3, p965 

    We present the hypothesis of homogeneous nucleation of ice nano-particles in the polar summer mesosphere. The nucleation of condensed phase is traced back to the first step on the formation pathway, which is assumed to be the transition of water vapor to amorphous cluster. Amorphous clusters...

  • Factors influencing the contribution of ion-induced nucleation in a boreal forest, Finland. Gagné, S.; Nieminen, T.; Kurtén, T.; Manninen, H. E.; Petäjä, T.; Laakso, L.; Kerminen, V.-M.; Boy, M.; Kulmala, M. // Atmospheric Chemistry & Physics Discussions;2009, Vol. 9 Issue 6, p25799 

    We present the longest series of measurements so far (2 years and 7 months) made with an Ion-DMPS at the SMEAR II measurement station in Hyytiälä, Southern Finland. We show that the classification of overcharged (implying some participation of ion-induced nucleation) and undercharged...

  • New Experimental Measurements and Theoretical Calculations of the Water Vapor Continuum Absorption in the 800 cm-1 to 1250 cm-1 Spectral Region at Temperatures from 311 K to 363 K. Baranov, Y. I.; Lafferty, W. J.; Ma, Q.; Tipping, R. H. // AIP Conference Proceedings;3/11/2009, Vol. 1100 Issue 1, p131 

    Water vapor self-continuum absorption coefficients at 27 micro-windows in the infrared spectral region for temperatures raging from 310.8 K to 363.6 K were measured. By considering contributions from far wings of allowed H2O lines, theoretical calculations of the continuum at these windows are...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics