نتایج جستجو برای: 2d multiphase heterogeneous model

تعداد نتایج: 2267233  

2015
Yanfeng Miao Huiyuan Guan Yulong Chen

Interior decoration with man-made board is a kind of common porous material, which is solid skeleton and the fluid inside the complex mixture. The establishment of the interior decoration of multiphase multidimensional model of mass transfer of volatile organic compounds released by artificial board, and based on the geometrical characteristic of wood-based panel thickness is thin, the artifici...

2006
D. Zhang N. G. Deen

Numerical simulations of the small bubble-big bubble-liquid three phase heterogeneous flow in a square cross-sectioned bubble column were carried out with the commercial CFD package CFX-4.4 to explore the effect of superficial velocity and inlet dispersed phase fractions on the flow patterns. The approach of Krishna et al. (2000) was adopted in the Euler-Euler framework to numerically simulate ...

Journal: :J. Comput. Physics 2009
Moran Wang Ning Pan

We propose a computational method with no ad hoc empirical parameters to determine the elastic properties of multiphase composites of complex geometries by numerically solving the stress–strain relationships in heterogeneous materials. First the randommicrostructure of the multiphase composites is reproduced in our model by the random generation-growth method. Then a high-efficiency lattice Bol...

2008
Richard Ewing Yalchin Efendiev Victor Ginting Hong Wang

In this paper we discuss upscaling of immiscible multiphase and miscible multicomponent flow and transport in heterogeneous porous media. The discussion presented in the paper summarizes the results of in Upscaled Modeling in Multiphase Flow Applications by Ginting et al. (2004) and in Upscaling of Multiphase and Multicomponent Flow by Ginting et al. (2006). Perturbation approaches are used to ...

Journal: :تحقیقات مهندسی کشاورزی 0
مژده خلیلی دانش آموخته کارشناسی ارشد آبیاری و زهکشی دانشگاه علوم کشاورزی و منابع طبیعی گرگان مهدی اکبری دانشیار موسسه تحقیقات فنی و مهندسی کشاورزی ابوطالب هزارجریبی دانشیار گروه مهندسی آب دانشکده کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان مهدی ذاکری نیا استادیار گروه مهندسی آب دانشکده کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان فریبرز عباسی استاد موسسه تحقیقات فنی و مهندسی کشاورزی

optimal use of water resources is essential to decrease cost and maximize available water resources. subsurface drip irrigation can increase irrigation and water use efficiency. this irrigation method distributes water into the soil, leaving the surface of the soil dry and decreasing evaporation. in the design of subsurface drip irrigation (sdi) systems, the dimensions of the wetted onion deter...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2007
M Sbragaglia R Benzi L Biferale S Succi K Sugiyama F Toschi

The physical behavior of a class of mesoscopic models for multiphase flows is analyzed in details near interfaces. In particular, an extended pseudopotential method is developed, which permits to tune the equation of state and surface tension independently of each other. The spurious velocity contributions of this extended model are shown to vanish in the limit of high grid refinement and/or hi...

2008
Dongjin Kwon Il Dong Yun Kyoung Ho Lee Sang Uk Lee

This paper presents an efficient feature-based nonrigid registration method for multiphase liver CT volumes. While radiologists routinely examine multiphase liver CT to detect hepatic diseases, they usually search corresponding points between 3D CT volumes by visual inspections using 2D slice images. As the liver is a deformable organ, there exist complex nonrigid transformations between liver ...

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