Topic
Volume of fluid method
About: Volume of fluid method is a research topic. Over the lifetime, 5338 publications have been published within this topic receiving 116760 citations.
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TL;DR: In this paper, a droplet impingement model is developed to simulate the transient flow dynamics during impact, spreading and solidification in a fixed Eulerian structured mesh, which is validated with experimental data from tin droplet measurements.
Abstract: Powder particles are projected from a thermal spray gun towards substrates to generate protective coatings. A clear understanding of the dynamic impingement when droplets make contact with substrates is critical for controlling and optimizing the thermal spray process. A droplet impingement model is developed to simulate the transient flow dynamics during impact, spreading and solidification. The volume of fluid surface tracking technique is employed within a fixed Eulerian structured mesh. The numerical model is validated with experimental data from tin droplet measurements. The results prove that thermal contact resistance is the key element in characterizing the substrate surface roughness for impingement modelling. It is found that spreading, solidification and air entrapment are closely related to surface roughness.
78 citations
TL;DR: In this article, an experimental investigation was performed to produce nanoparticles of hydroxyapatite by a reaction at ambient temperature between aqueous solutions of calcium chloride and ammonium phosphate in presence of ammonium hydroxide to achieve an operating pH of 10.
78 citations
TL;DR: Four distinct approaches to Volume of Fluid (VOF) computational method are compared and two of the methods are the ‘simplified’ VOF formulations, in that they do not require geometrical interface reconstruction.
78 citations
TL;DR: In this article, the extensional velocity and internal friction are measured in a series of partially melted alloys having different volume fractions of fluid and different dihedral angles, and an approximate upper limit to the volume of fluid which can be present in the low-velocity zone (LVZ) of the upper mantle and be consistent with seismic data is given.
Abstract: The extensional velocity and internal friction are measured in a series of partially melted alloys having different volume fractions of fluid and different dihedral angles. The acoustic properties change discontinuously when melt forms: the velocity decreases while Q−1 usually, but not invariably, increases. The present results, in conjunction with previous studies, form a broadly consistent picture of acoustic properties in partial melts. The dihedral angle has a major effect; the extensional velocity decreases much more rapidly with increasing melt content when the liquid wets the grain boundaries. The data set an approximate upper limit to the volume of fluid which can be present in the low-velocity zone (LVZ) of the upper mantle and be consistent with seismic data, assuming that the LVZ is due to partial melting and the seismic frequencies are much less than the peak frequency for fluid motion. If the dihedral angle of the melt in the LVZ is zero, only several tenths of 1 vol % of fluid can be present, and less than 5 vol % if the dihedral angle is 60°.
78 citations
TL;DR: A wide-ranging numerical survey of the rising of individual Taylor bubbles through vertical columns of stagnant Newtonian liquid in laminar flow regime is presented in this paper, where the authors applied the CFD procedure applied is based in the volume of fluid (VOF) methodology of the commercial package Ansys FLUENT.
78 citations