Journal ArticleDOI
A pulse-expansion wave tube for nucleation studies at high pressures
TLDR
In this paper, the design and performance of a new pulse-expansion wave tube for nucleation studies at high pressures are described, which is a special shock tube in which a nucleation pulse is formed at the endwall of the high pressure section.Abstract:
The design and performance of a new pulse-expansion wave tube for nucleation studies at high pressures are described. The pulse-expansion wave tube is a special shock tube in which a nucleation pulse is formed at the endwall of the high pressure section. The nucleation pulse is due to reflections of the initial shock wave at a local widening situated in the low pressure section at a short distance from the diaphragm. The nucleation pulse has a duration of the order of 200 μs, while nucleation pressures that can be achieved range from 1 to 50 bar total pressure. Droplet size and droplet number density can accurately be determined by a 90°-Mie light scattering method and a light extinction method. The range of nucleation rates that can be measured is 108 cm-3 s-1<J<1011 cm-3 s-1. We will illustrate the functioning and possibilities of the new pulse-expansion wave tube by nucleation rate measurements in the gas-vapour mixture nitrogen/water in the temperature range 200–260 K, and in the mixture methane/n-nonane as a function of supersaturation S at various total pressures up to 40 bar and temperatures around 240 K.read more
Citations
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Journal ArticleDOI
Nucleation and Growth of Nanoparticles in the Atmosphere
TL;DR: Nucleation and Growth of Nanoparticles in the Atmosphere Renyi Zhang,* Alexei Khalizov, Lin Wang, Min Hu, and Wen Xu.
Journal ArticleDOI
Binary condensation in a supersonic nozzle
TL;DR: In this paper, the first systematic studies of binary condensation in supersonic nozzles were conducted with water, ethanol, propanol, and binary mixtures of these compounds.
Journal ArticleDOI
Overview: Homogeneous nucleation from the vapor phase-The experimental science.
Barbara E. Wyslouzil,Judith Wölk +1 more
TL;DR: An overview of the key experimental and theoretical developments that have made it possible to address some of the fundamental questions first delineated and investigated in C. T. R. Wilson's pioneering paper of 1897 is presented.
Journal ArticleDOI
Supersonic separation technology for natural gas processing: A review
Xuewen Cao,Jiang Bian +1 more
TL;DR: In this article, the authors reviewed the research advances in condensation characteristics of the Laval nozzle and separation mechanism of the supersonic separator in detail from the perspectives of theoretical analysis, experiments and numerical simulation, and summarized the new application of this technology including natural gas liquefaction and removal of the acid gases.
Journal ArticleDOI
Argon nucleation in a cryogenic nucleation pulse chamber.
TL;DR: The first systematic nucleation onset data for argon measured in a temperature range from 42 to 58 K and for vapor pressures from 0.3 to 10 kPa is presented and the size of the critical nucleus is evaluated to be 40-80 argon atoms using the Gibbs-Thomson equation.
References
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Book
The Properties of Gases and Liquids
TL;DR: In this article, the authors estimate physical properties of pure components and Mixtures and show that the properties of these components and mixtures are similar to those of ideal gases and liquids.
Journal ArticleDOI
Homogeneous nucleation rates for water
TL;DR: In this article, the authors investigated homogeneous nucleation of water droplets in the vapor phase using the nucleation pulse technique and found that nucleation rates in supersaturated water vapor mixed with various carrier gases as functions of supersaturation and temperature were independent of the nature of the carrier gas.
Journal ArticleDOI
A constant-angle Mie scattering method (CAMS) for investigation of particle formation processes
TL;DR: In this article, the experimental and theoretical light flux-vs-time curves are compared by means of the Mie theory to determine particle size and number concentration in colloidal systems.
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