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Jumping-droplet condensation has been shown to enhance the heat transfer performance (≈100%) when compared to dropwise condensation by reducing the time-averaged droplet size (≈ 10 μm) on the condensing surface. Here, we develop a rigorous, three dimensional numerical simulation of jumping-droplet condensation in order to compute the steady-state time-averaged droplet size distribution. In order to characterize the criteria for achieving steady-state, we use maximum radii (R_max) tracking on the surface, showing that R_max settles to an average in time once steady-state is reached. The effects of the minimum jumping radius (0.1µm - 10 µm), maximum jumping radius, apparent advancing contact angle (150° - 175°), and droplet growth rate were investigated. We provide a numerical fit for the jumping droplet condensation size distribution with an overall correlation coefficient greater than 0.995. The heat transfer performance was evaluated as a function of contact angle and hydrophobic coating thickness, showing excellent agreement with prior experimentally measured values. Our simulations uncovered that droplet size mismatch during coalescence has the potential to impede the achievement of steady state, and describe a new flooding mechanism for jumping droplet condensation. Our work not only develops a unified numerical model for jumping droplet condensation that is extendable to a plethora of other conditions, it demonstrates design criteria for non-wetting surface manufacture for enhanced jumping-droplet condensation heat transfer.
This article was published in the following journal.
Name: Langmuir : the ACS journal of surfaces and colloids
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A computer simulation technique that is used to model the interaction between two molecules. Typically the docking simulation measures the interactions of a small molecule or ligand with a part of a larger molecule such as a protein.
A computer simulation developed to study the motion of molecules over a period of time.
An enzyme that, in the pathway of cholesterol biosynthesis, catalyzes the condensation of isopentenyl pyrophosphate and dimethylallylpyrophosphate to yield pyrophosphate and geranylpyrophosphate. The enzyme then catalyzes the condensation of the latter compound with another molecule of isopentenyl pyrophosphate to yield pyrophosphate and farnesylpyrophosphate. EC 18.104.22.168.
A family of vertebrate and insect lipid droplet associated proteins. They consist of a conserved N-terminal PAT domain (an alpha-helical region of about 110 amino acids), an 11-mer repeat region, and lipid-binding hydrophobic regions or 4-helix bundles near their C-termini. Perilipins transiently or constitutively localize to LIPID DROPLETS in ADIPOCYTES and FOAM CELLS, especially in regions adjacent to the PLASMA MEMBRANE and ENDOPLASMIC RECTICULUM. They are critical for lipid droplet synthesis and homeostasis as well as the regulation of lipid metabolism. Genetic variations in perilipins are associated with ATHEROSCLEROSIS; OBESITY; and DIABETES MELLITUS.
Works consisting of presentations of numerical data on particular subjects.
Collaborations in biotechnology
Commercial and academic collaborations are used throughout the biotechnology and pharmaceutical sector to enhance research and product development. Collaborations can take the form of research and evaluation agreements, licensing, partnerships etc. ...