Results 31 to 40 of about 325,517 (306)

A Comparative Study of the Oil-Free Centrifugal Water Chillers with the Flooded or Falling Film Evaporator—A Case Study

open access: yesEnergies, 2019
A comparative study regarding the performance of real-scale oil-free centrifugal chillers having the flooded evaporator or falling film evaporator was conducted in this study.
Kuo-Shu Hung   +4 more
doaj   +1 more source

Liquid Mixing on Falling Films: Marker-Free, Molecule-Sensitive 3D Mapping Using Raman Imaging

open access: yesSensors, 2023
Following up on a proof of concept, this publication presents a new method for mixing mapping on falling liquid films. On falling liquid films, different surfaces, plain or structured, are common. Regarding mixing of different components, the surface has
Marcel Nachtmann   +4 more
doaj   +1 more source

Falling liquid films with blowing and suction [PDF]

open access: yes, 2015
Flow of a thin viscous film down a flat inclined plane becomes unstable to long wave interfacial fluctuations when the Reynolds number based on the mean film thickness becomes larger than a critical value (this value decreases as the angle of inclination
Papageorgiou, Demetrios T.   +2 more
core   +2 more sources

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

Numerical investigation of falling film generation outside vertical tube with ammonia-water nanofluid

open access: yesEnergy and Built Environment
This paper constructed a mathematical model of ammonia-water nanofluid falling film generation outside the vertical tube, which considers the change of the film thickness of the falling film solution, the thermal convection along the film thickness ...
Yanjun Li   +6 more
doaj   +1 more source

Vertical axis wind turbine in a falling soap film [PDF]

open access: yes, 2015
Vertical axis wind turbines (VAWTs) have demonstrated a potential to significantly enhance the efficiency of energy harvesting within a wind farm. One mechanism that contributes to this enhancement is a VAWT’s inherent insensitivity to wind direction ...
Araya, Daniel B., Dabiri, John O.
core   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira   +4 more
wiley   +1 more source

CFD modelling of convective falling films for enhanced algae cultivation: Fluid mechanics influence of mass transfer [PDF]

open access: yesEPJ Web of Conferences
Falling film photobioreactors are able to increase the mass transfer rates per volume of liquid through the gas-liquid interface compared to other photobioreactor types. At low Reynolds numbers the flow mass transfer is still diffusion limited. This work
Lancaster Gerald   +2 more
doaj   +1 more source

Heat transfer in the flow of a cold, axisymmetric vertical liquid jet against a hot, horizontal plate

open access: yes, 2014
The paper considers heat transfer characteristics of thin film flow over a hot horizontal flat plate resulting from a cold vertical jet of liquid falling onto the surface. A numerical solution of high accuracy is obtained for large Reynolds numbers using
Shu, Jian-Jun, Wilks, Graham
core   +1 more source

Packaging of Macroscopic Material Payloads: Needs, Challenges, Concepts, and Future Directions

open access: yesAdvanced Engineering Materials, EarlyView.
This review introduces a unified framework that decomposes any macroscopic packaging system into the payload, packaging material, and packaging strategy and combines them into a conceptual packaging equation: packaging strategy = payload + packaging material.
Venkata S. R. Jampani, Manos Anyfantakis
wiley   +1 more source

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