نتایج جستجو برای: capillary porous solid

تعداد نتایج: 271343  

2009
Derrick P. Green

Capillary pressure (Pc) curves acquired using the Magnetic Resonance Imaging (MRI) technique, call GIT-CAP, have 70-100 data points. This extra data, when compared with traditional porous plate or centrifuge techniques, allows for the interpretation of more information from the Pc curve. In particular, the pore throat size and relative permeability can be extracted. The pore throat size can be ...

Farhad Sharif Mohammad Amani Tehran Mohsen Mohseni Samad Ahadian Siamak Moradian,

An Artificial Neural Network (ANN) was used to analyse the capillary rise in porous media. Wetting experiments were performed with fifteen liquids and fifteen different powders. The liquids covered a wide range  of  surface  tension ( 15.45-71.99  mJ/m2 )  and  viscosity (0.25-21 mPa.s). The powders also provided an acceptable range of particle size (0.012-45 μm) and surface free...

2015
Gerald G. PEREIRA

The Lattice Boltzmann (LB) method has been shown to be a highly efficient numerical method for solving fluid flow in confined domains such as pipes, irregularly shaped channels or porous media. Traditionally the LB method has been applied to flow in void regions (pores) and no flow in solid regions. However, in a number of scenarios, this may not suffice. That is partial flow may occur in semi-...

Journal: :Journal of colloid and interface science 2007
Moran Wang Shiyi Chen

Electroosmosis in homogeneously charged micro- and nanoscale random porous media has been numerically investigated using mesoscopic simulation methods which involve a random generation-growth method for reproducing three-dimensional random microstructures of porous media and a high-efficiency lattice Poisson-Boltzmann algorithm for solving the strongly nonlinear governing equations of electroos...

Journal: :Computers & Mathematics with Applications 2015
X. Cao Iuliu Sorin Pop

In this paper, we obtain the uniqueness of weak solutions for a two phase flow model in a porous medium. A particularity of the model is that the dynamic effects and hysteresis are included in the capillary pressure.

Journal: :Appl. Math. Lett. 2015
X. Cao Iuliu Sorin Pop

In this paper, we prove the uniqueness of weak solutions for a pseudoparabolic equation modeling two-phase flow in a porous medium, where dynamic effects are included in the capillary pressure.

Based on an effective energy conversion method between gas enthalpy and thermal radiation, a multi-layered type of porous air heater has been proposed. In the five layered structure which is analyzed in this work, there are five porous layers which are separated by four quartz glass windows. The main layer operates as a porous radiant burner that products a large amount of thermal radiative ene...

Journal: :Sustainability 2022

This article is the result of authors’ work on method calculating effective thermal conductivity moist capillary-porous materials used in wall partitions. The proposed methodology was developed based theory generalized and geometric modeling structure. Materials are considered as heterogeneous ternary systems consisting a solid skeleton, gas liquid, all components simultaneously taken into acco...

Journal: :علوم و تکنولوژی پلیمر 0
یوسف محمدی حمید میرزاده فتح اله مضطرزاده مسعود سلیمانی اسماعیل جباری

in this study, based on a biomimetic approach, novel 3d biodegradable porous hybrid scaffolds consisting of chitosan, gelatin, and tricalcium phosphate were developed for bone and cartilage tissue engineering. macroporous chitosan/ gelatin/β-tcp scaffolds were prepared through the process of freeze-gelation/solid-liquid phase separation. the results showed that the prepared scaffolds are highly...

Journal: :Clinical chemistry 1974
M Novotny M L McConnell M L Lee R Farlow

Trace volatile constituents of human urine, serum, and cerebrospinal fluid were concentrated on a porous polymer precolumn, and resolved with high-efficiency glass capillary columns. Thin-film glass columns facilitate effective resolution of underivatized compounds within the volatility range up to docosane in relatively short analysis times. Glass capillary columns coated with stationary phase...

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