Analysis of the Effective Diffusivity and Conductivity in Three-Phase Composite Material Consisting of the Host and Coated Inclusions

2005 ◽  
Vol 237-240 ◽  
pp. 384-389 ◽  
Author(s):  
Irina V. Belova ◽  
Graeme E. Murch
2009 ◽  
Vol 43 (11) ◽  
pp. 1251-1263 ◽  
Author(s):  
Ilker Bekir Topçu ◽  
Turhan Bilir

Author(s):  
Kentaro HORI ◽  
Daichi MOCHIZUKI ◽  
Yoshimi KIKUCHI ◽  
Hiroyuki WAKIWAKA ◽  
Makoto SONEHARA ◽  
...  

2009 ◽  
Vol 63 (2) ◽  
Author(s):  
Marcel Kotora ◽  
Zuzana Švandová ◽  
Jozef Markoš

AbstractNonequilibrium model for steady state simulation of catalytic distillation is presented. Mathematical model takes into account both mass and heat transfers across the gas liquid interface and through the liquid-solid (catalyst) interface. Equations describing the mentioned phenomena are based on the effective diffusivity approach. The resulting system of nonlinear algebraic equations was implemented in the FORTRAN programming language and solved by the BUNLSI (Ferraris & Tronconi, 1986) solver. The described model was verified using the experimental data obtained from a continuous distillation column equipped with catalytic packing. As an experimental model system, synthesis of propyl propionate from propan-1-ol and propionic acid was chosen. Comparison of experimental and simulation data is presented, and appropriateness of the developed model for other types of catalytic distillation processes is discussed.


2014 ◽  
Vol 124 ◽  
pp. 117-119 ◽  
Author(s):  
Jingni Liu ◽  
Guofeng Tian ◽  
Shengli Qi ◽  
Zhanpeng Wu ◽  
Dezhen Wu

2020 ◽  
Vol 15 (55) ◽  
pp. 36-49
Author(s):  
Fedaoui Kamel ◽  
Lazhar Baroura ◽  
Karim Arar ◽  
Hichem Amrani ◽  
Mohamed said Boutaani

In the present study, Composite material consisting of an elastic homogeneous isotropic matrix in which are embedded coated elastic isotropic inclusions, widely used in many applications is investigate by homogenization approach coupled to the finite elements method. A finite element model is proposed to predict the Young and Shear modulus of the three-phase composite containing spherical inclusions surrounded by a spherical or ellipsoid interphase layer. Three cases of particles volume fractions and interphase was considered with addition of two interphase morphology. Young modulus of interphase region was varied from soft to hard than the matrix properties. We note that interphase morphology and properties plays an important role in the elastic properties of composite with increasing the volume fraction of inclusions and interphase. The results were compared to the first order bounds Voigt and Reuss, and the mean field homogenization techniques. A sensitive study of the effect of mesh density on the results of the von Mises stresses and elastic properties has been made.


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