A5000845386- Rheology and Fluid Dynamics Studies
- Fluid Dynamics and Heat Transfer
- Electrohydrodynamics and Fluid Dynamics
- Polymer crystallization and properties
- Innovative Microfluidic and Catalytic Techniques Innovation
- Advanced Combustion Engine Technologies
- Surface Modification and Superhydrophobicity
- Fluid Dynamics and Mixing
- Plant Surface Properties and Treatments
- Lattice Boltzmann Simulation Studies
- Combustion and flame dynamics
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics and Turbulent Flows
- Probabilistic and Robust Engineering Design
- Phase Equilibria and Thermodynamics
- Nanomaterials and Printing Technologies
- Aerosol Filtration and Electrostatic Precipitation
- Drilling and Well Engineering
- Physics and Engineering Research Articles
- Material Dynamics and Properties
- Microencapsulation and Drying Processes
- Injection Molding Process and Properties
- Vibration and Dynamic Analysis
- Cyclone Separators and Fluid Dynamics
- Metallic Glasses and Amorphous Alloys
Michigan Technological University
2012-2023
École Polytechnique Fédérale de Lausanne
2001-2010
Laboratoire Jean Kuntzmann
2010
Charles Humbert 8
2001
ETH Zurich
1994-1999
Numerical simulations are performed to investigate the characteristics of peristaltic flow in a model stomach during mixing and digestion process. The geometrical for consists an axisymmetric tube varying diameter with wall at one end, representing antrum closed pylorus. antral contraction waves (ACWs) that produce modeled as traveling deform boundary consequently computational mesh. This is implemented into open source code OpenFOAM. A parametric study which fluid viscosity, wave speed,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCONNFFESSIT Approach for Solving a Two-Dimensional Viscoelastic Fluid ProblemKathleen Feigl, Manuel Laso, and Hans Christian OettingerCite this: Macromolecules 1995, 28, 9, 3261–3274Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April 1995https://pubs.acs.org/doi/10.1021/ma00113a031https://doi.org/10.1021/ma00113a031research-articleACS PublicationsRequest reuse permissionsArticle...
The flow of a LDPE melt in an abrupt 10:1 axisymmetric contraction is simulated using finite element program, and comparisons are made with experimental results reported by another researcher. researcher performed his die entry experiment at temperature 150 °C, he used Laser Doppler Anemometry to measure the velocity field several rates. He thus obtained detailed information about field. In our numerical simulation this experiment, we use separable Rivlin-Sawyers integral constitutive...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Kathleen Feigl, Hans Christian Öttinger; A numerical study of the flow a low‐density‐polyethylene melt in planar contraction comparison to experiments. J. Rheol. 1 January 1996; 40 (1): 21–35. https://doi.org/10.1122/1.550736 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Barry Bernstein, Kathleen Ann Feigl, Elwood T. Olsen; Steady flows of viscoelastic fluids in axisymmetric abrupt contraction geometry: A comparison numerical results. J. Rheol. 1 January 1994; 38 (1): 53–71. https://doi.org/10.1122/1.550495 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends...
Numerical simulations are used to investigate the breakup of emulsion drops within a spraying nozzle. The performed by solving two-phase flow problem in nozzle which individual tracked through field. A modified version an OpenFOAM® solver is as basis for simulations. numerical algorithm employs finite volume method mass and momentum conservation equations volume-of-fluid approach capturing fluid-fluid interface. Dynamic meshing maintain sufficiently refined mesh around drop it moves...
The behavior of liquid drops in the retropulsive jet produced by a peristaltic wave is investigated computationally. computational geometry consists tube which closed at one end, with that deforms boundary moving toward it. A modified solver capability to couple mesh deformation and adaptive refinement around was developed validated experimental data, good agreement found. parametric study then performed determine effect interfacial tension, viscosity ratio, relative occlusion, initial drop...
Optical and X-ray spray measurements may yield different results when similar quantities are measured. Computer simulations were used to reconcile such differences in the near-nozzle region for high-velocity, dense fuel sprays injected into nitrogen at various gas pressures. It was found that consists of a core around axis, which contains majority liquid mass, its radial expansion is not very sensitive with respect changes pressure. The remaining mass forms dilute away from center; it...
The dispersing characteristics of antral contraction wave (ACW) flow in the antrum are investigated by reproducing generated an ACW and determining its effect on liquid drops. goal is to gain information about field mechanical stresses, which responsible for food disintegration. Toward this end, a model prototype was constructed, consisting cylinder that closed at one end represent pylorus. A moving hollow piston with parabolic inner contour used ACW. computational developed reflects...
Three-dimensional symmetric computational fluid dynamics (CFD) simulations are performed to study the deformation and breakup of water drops in an air stream at different Weber numbers. The types drop considered lie bag breakup, stamen sheet-thinning/ stripping regimes. Symmetry conditions assumed so that only one-quarter a is simulated. A fully three-dimensional simulation first conducted justify this symmetry assumption which then used remaining CFD simulations. In order keep within fixed...
ABSTRACT Continuous mixing and dispersing process flows produced by scraped surface heat exchangers (SSHE) in food technology influence the microstructure of multiphase systems hence desired quality aspects (e.g. specific texture properties temperature resistance). Such general depict non‐Newtonian fluid behavior. To explain optimize structuring mechanism (due to dispersion) treated such apparatus knowledge local flow behavior is necessary. In this paper a with special narrow annular gaps...