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Flow Mechanism Characterization of Porous Oil-Containing Material Base on Micro-Scale Pore Modeling
2021
Materials
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In order to characterize the micro-scale pore structure, new structural parameter indicators, such as relative surface perimeter, effective porosity, tortuosity and fluid properties related to the internal ...
The multiphysics coupling simulation analysis of lubricating oil inside the porous cage with the effect of centrifugal force and thermal expansion was carried out based on the COMSOL Multiphysics platform ...
Characterization of Porous Oil-Containing Material Base on Micro-Scale Pore Modeling". ...
doi:10.3390/ma14143896
fatcat:whvpxgpo35bsxot4gdvzt7ctga
Development of Skin-On-A-Chip Platforms for Different Utilizations: Factors to Be Considered
2021
Micromachines
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using Computational Fluid Dynamics techniques. ...
The basic mathematical models are also presented in the article to predict physical phenomena, such as fluid movement, drug diffusion, and heat transfer taking place across the dermal layers in the chip ...
Acknowledgments: The authors are grateful to Márton Bese Naszlady and to the MSc and BSc students working in the lab for the assistance in the skin-on-a-chip studies (Dorottya Kocsis, Rózsa Molnár and ...
doi:10.3390/mi12030294
pmid:33802208
pmcid:PMC8001759
fatcat:zmtahlgfq5axblx7oqgn7b4qzq
3D simulation of the permeability tensor in a soil aggregate on basis of nanotomographic imaging and LBE solver
2011
Journal of Soils and Sediments
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Results and discussion The soil ped features quantified from the tomographic images were pore and grain size distributions (PSD, GSD), porosity, percolation tensor in x, y, z-direction and percolation ...
LBE-simulated pore scale fluid flow is used to ultimately determine gross parameters (coefficients) of Darcy's law such as the saturated hydraulic conductivity, K s . ...
We thank Stephan Schulz (Helmholtz Zentrum München) for providing us with the Scheyern reference soil sample and its composition data. ...
doi:10.1007/s11368-011-0435-3
fatcat:rkawbanipvgbfggwzmjrm47nge
Additive manufacturing of biodegradable porous orthopaedic screw
2020
Bioactive Materials
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Due to the open pore structure, the 3D printed screws showed increased weight gain due to the deposition of calcium when incubated in simulated body fluid. ...
Porous screws produced by additive manufacturing may promote better osteointegration due to enhanced mineralization and vascularization. ...
In vitro degradation profile The degradation rate of porous and solid screws was determined in simulated body fluid (SBF) as it mimics ion concentration with human blood plasma by measuring the weight ...
doi:10.1016/j.bioactmat.2020.03.009
pmid:32280835
pmcid:PMC7139166
fatcat:c2tk35h5uzcftlfpxhtvu54urm
Effective Rheology of Two-Phase Flow in Three-Dimensional Porous Media: Experiment and Simulation
2017
Transport in Porous Media
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We present an experimental and numerical study of immiscible two-phase flow of Newtonian fluids in three-dimensional (3D) porous media to find the relationship between the volumetric flow rate (Q) and ...
For the numerical study, reconstructed 3D pore networks from real core samples are considered and the transport of wetting and nonwetting fluids through the network is modeled by tracking the fluid interfaces ...
Nonlinear flow regimes were also observed for the two-phase flow of non-wetting blobs (droplets) inside a wetting fluid in a high porosity two-dimensional porous media via lattice-Boltzmann simulation ...
doi:10.1007/s11242-017-0874-4
pmid:28794576
pmcid:PMC5522531
fatcat:fpk4z4gprjfclm35ffwrb7fpza
Possibilities of porous-structure representation – an overview
2021
Acta Technica Jaurinensis
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Porous media can be found in all areas of scientific life, such as medicine, civil engineering, material science, fluid dynamics. ...
Computing has achieved high efficiency and computational capacity – so far. However, three-dimensional Computational Fluid Dynamics (CFD) simulations of microstructure remain significant challenges. ...
The porous medium simulation of fluid flow and transport could be divided into two types separated by scale. ...
doi:10.14513/actatechjaur.00591
fatcat:i5equ33kf5dyjnlvavrcyqdjd4
Laser Scanning Confocal Microscopy Characterization of Conservation Products Distribution in Building Stone Porous Network
[chapter]
2011
Laser Scanning, Theory and Applications
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sandstone can be too porous and fragile for loadbearing structures. ...
They are layered accumulations of sediments-fragments of rocks, minerals, or animal or plant material. ...
This high performance is needed in this kind of study to provide details and precision about connectivity, pore distribution and pore shape, critical parameters, to control fluid transfer and hence rock ...
doi:10.5772/15314
fatcat:lpeesdx22zhn3owpt737hsfd3u
Biomechanical Effects of 3D-Printed Bioceramic Scaffolds With Porous Gradient Structures on the Regeneration of Alveolar Bone Defect: A Comprehensive Study
2022
Frontiers in Bioengineering and Biotechnology
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While in the simulation of Computational Fluid Dynamics (CFD), scaffolds with pore size increased from the center to the perimeter (GI) possessed the best permeability and largest flow velocity. ...
Porous ceramics showed excellent biocompatibility. Results of in vivo were analysed by using micro-CT, concentric rings and VG staining. ...
The disadvantages of these techniques include uneven and inaccurate scaffold porosity, which cannot achieve precise pore sizes and pore interconnectivity (Dehghani and Annabi, 2011) . ...
doi:10.3389/fbioe.2022.882631
pmid:35694236
pmcid:PMC9177945
fatcat:hqs37fzc7babtiuy5th66zsjfe
The development and numerical modelling of a Representative Elemental Volume for packed sand
2018
Chemical Engineering Science
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A correlation is presented to demonstrate how the heat transfer results can be put into a compact form for use in computations using a porous continuum approach. ...
As the application of the model is towards smoldering combustion, the comparison focuses on the pressure drop and convective heat transfer at very low Reynolds numbers and a wide range of high temperatures ...
Acknowledgements The authors gratefully acknowledge the financial support from the Natural Engineering and Sciences Research Council of Canada and the Ontario Graduate Scholarship (Thabet). ...
doi:10.1016/j.ces.2018.04.054
fatcat:arub7ovjg5gizbbd2udwdesid4
Fabrication of open-cellular (porous) titanium alloy implants: osseointegration, vascularization and preliminary human trials
2017
Science China Materials
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Preliminary results for both animal (sheep) and human trials for a number of EBM-fabricated, and often patient-specific Tialloy implants are also presented and summarized. ...
The results, while preliminary, support the concept and development of successful, porous, engineered "living" implants. ...
Acknowledgements This research was supported in part by the Ministry of Science and Technology Project ( ...
doi:10.1007/s40843-017-9063-6
fatcat:garqb5txerfz7pp4476gxzo2hq
Geometrical evaluation of a resin infusion process by means of constructal design
2016
International Journal of Heat and Technology
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The interaction between the phases is treated with the method Volume of Fluid (VOF) and resistance of porous medium is taken into account with Darcy's law. ...
For all simulations the ratio between the channel and plate volume is constant ( = 0.05). ...
More precisely, the simulations are performed using the Computational Fluid Dynamics code FLUENT [23] . ...
doi:10.18280/ijht.34sp0113
fatcat:ffhwwlnhave4ddm3vtiky2ojui
Integrated Design Approaches for 3D Printed Tissue Scaffolds: Review and Outlook
2019
Materials
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Integrated design approaches that encourage iteration and consideration of diverse processes including design configuration, material selection, and simulation models provide a basis for improving design ...
Emerging 3D printing technologies are enabling the fabrication of complex scaffold structures for diverse medical applications. 3D printing allows controlled material placement for configuring porous tissue ...
Acknowledgments: Christopher O'Neal aided in 3D printing and imaging SLA printed lattices. Texas Tech University provided funding and support. ...
doi:10.3390/ma12152355
pmid:31344956
pmcid:PMC6695904
fatcat:irc75up5nzaldig7lvlzk6kpqe
Engineering craniofacial scaffolds
2005
Orthodontics & craniofacial research
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and support bone regeneration for craniofacial reconstruction. ...
Results -Results showed that the design/fabrication approach could create scaffolds with designed porous architecture to match craniofacial anatomy. ...
We would also like to thank Professors Antonio Mikos and Michael Yaszemski for providing the PPF material. ...
doi:10.1111/j.1601-6343.2005.00329.x
pmid:16022718
fatcat:vq664bkcenganczs5cylfm3itq
Doped Calcium Silicate Ceramics: A New Class of Candidates for Synthetic Bone Substitutes
2017
Materials
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Such characteristics offer significant advantages over existing ceramic bone substitutes, and underline the future potential of adopting DCSCs for clinical use in bone reconstruction to produce improved ...
characteristics, radiopacity, and biological activity (in vitro and in vivo). ...
body fluid; CM: cell culture media. ...
doi:10.3390/ma10020153
pmid:28772513
pmcid:PMC5459133
fatcat:nxyxtosz3femxabsibz3v4evfm
Three-dimensional computational model of a blood oxygenator reconstructed from micro-CT scans
2017
Medical Engineering and Physics
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Threedimensional computational model of a blood oxygenator reconstructed from micro-CT scans. Medical Engineering & Physics http://dx. ...
as the assistance provided by the Swansea University AIM Facility, which was funded in part by the EPSRC (EP/M028267/1), the European Regional Development Fund through the Welsh Government ( 80708 ) and ...
[25] predict blood-gas exchange and pressure drop with a Newtonian flow field through a porous media. A comparison of different porous media models is presented by Khanafer et al. ...
doi:10.1016/j.medengphy.2017.06.035
pmid:28716304
fatcat:7xj7gbwx4rckrbbro4lygafkhq
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