Results 71 to 80 of about 59,892 (311)

Effect of surfactants on liquid side mass transfer coefficients [PDF]

, 2005
In the present paper, the effect of liquid properties (surfactants) on bubble generation phenomenon, interfacial area and liquid side mass transfer coefficient was investigated.
Hebrard, Gilles, Loubière, Karine, Roustan, Michel, Mietton-Peuchot, Martine, Painmanakul, Pisut   +4 more
core   +1 more source

Measurement and Analysis of Bubble Size Distribution in the Electrochemical Stirred Tank Reactor

Iraqi Journal of Chemical and Petroleum Engineering, 2023
The dimensions of bubbles were measured in a stirrer tank electrochemical reactor, where the analysis of the bubble size distribution has a substantial impact on the flow dynamics. The high-speed camera and image processing methods were used to obtain a
Raghad S. Mahmood , Alanood A. Alsarayreh, Ammar S. Abbas   +2 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Effects of Polydispersity in Bubbly Flows [PDF]

, 2010
This thesis concerns the dynamics of bubbly flows with a distribution of equilibrium bubble sizes. The main goal is to formulate the physical and numerical models of continuum bubbly flows that enable us to efficiently compute the average mixture ...
Ando, Keita
core   +1 more source

Bubble Characteristics in Multi-Phase Flow Systems: Bubble Sizes and Size Distributions.

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1997
The bubble characteristics for multi-phase flow systems were studied in a two-dimensional column by direct visual observation together with the image processing of photographs. The effects of operating conditions such as particle sizes, superficial gas and liquid velocities on bubble flow behavior were examined.
Luewisutthichat, Wilai, Tsutsumi, Atsushi, Yoshida, Kunio   +2 more
openaire   +2 more sources

An improved equivalent viscosity model for the bubbly oil under high shear rate

Friction
Shear-thinning effect of pure oil and distribution of bubble size are essential factors affecting the viscosity of bubbly oil. This study aims to establish an improved equivalent viscosity model for bubbly oil by considering the shear-thinning effect and
Shaohua Li, Shuyun Jiang, Xiaohui Lin, Chibin Zhang   +3 more
doaj   +1 more source

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

Advanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann, Ryan Kalgreen, Laura M. Comella   +2 more
wiley   +1 more source

Modeling of bubble-size distribution in free rise polyurethane foams

, 1992
The existing models of the foaming process in reaction injection molding are inadequate for predicting the bubble-size distribution, which influences many properties of interest.
Kumar, R, Niyogi, Debdarsan, Gandhi, KS
core   +2 more sources

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

Local bubble‐size distribution in fluidized beds

, 2000
The importance of the rise angle of bubbles on the influence of local bubble-size distribution in fluidized beds was studied. A new method is proposed for transforming chord-length distribution to a local bubble-size distribution, including the effect of
A. Macías‐Machín, Macias-Machin, A., Santana, D., D. Santana   +3 more
core   +1 more source