نتایج جستجو برای: volume method

تعداد نتایج: 1889933  

In this paper the damage location in beam like-structure is determined using static and dynamic data obtained using finite volume method. The change of static and dynamic displacement due to damage is used to establish an indicator for determining the damage location. In order to assess the robustness of the proposed method for structural damage detection, three test examples including a static...

Journal: :journal of biomedical physics and engineering 0
r zeinali medical physics student of tabriz university of medical science a keshtkar a zamani n gharehaghaji

background: volume estimation of brain is important for many neurological applications. it is necessary in measuring brain growth and changes in brain in normal/abnormal patients. thus, accurate brain volume measurement is very important. magnetic resonance imaging (mri) is the method of choice for volume quantification due to excellent levels of image resolution and between-tissue contrast. st...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1999
H Xi G Peng S H Chou

We present a finite-volume formulation for the lattice Boltzmann method (FVLBM) based on standard bilinear quadrilateral elements in two dimensions. The accuracy of this scheme is demonstrated by comparing the velocity field with the analytical solution of the Navier-Stokes equations for time dependent rotating Couette flow and Taylor vortex flow. To demonstrate the flexibility of the scheme, w...

Journal: :international journal of iron & steel society of iran 2011
m. s. valipour m. h. mokhtari

effect of water gas shift reaction (co+h2o=co2+h2) on wustite reduction has been investigated by a transient, non-isothermal mathematical model based on grain model. in this model, wustite porous pellet is reduced using syngas, namely a mixture of hydrogen, carbon monoxide, carbon dioxide and water vapor. for this purpose, governing equations containing continuity equation of species and energy...

Journal: :journal of agricultural science and technology 2010
m. m. heidari s. kouchakzadeh e. bayat

a subsurface drainage network mainly carries unsteady flow and data are not usually available for model parameters calibration in such networks. in the present research, the finite volume method using the time splitting scheme was employed to develop a computer code for solving the one dimensional unsteady flow equations. using corrugated sub drainage pipes, an experimental prototype setup was ...

Journal: :J. Sci. Comput. 2013
Yuan Liu Yong-Tao Zhang

The weighted essentially non-oscillatory (WENO) schemes are a popular class of high order numerical methods for hyperbolic partial differential equations (PDEs). While WENO schemes on structured meshes are quite mature, the development of finite volume WENO schemes on unstructured meshes is more difficult. A major difficulty is how to design a robust WENO reconstruction procedure to deal with d...

Journal: :Computer Methods in Applied Mechanics and Engineering 2019

Journal: :تحقیقات مهندسی کشاورزی 0
جعفر امیری پریان دانشجوی سابق دکتری دانشگاه تربیت مدرس محمدهادی خوش تقاضا دانشیار دانشگاه تربیت مدرس احسان الله کبیر استاد دانشگاه تربیت مدرس سعید مینایی دانشیار دانشگاه تربیت مدرس

volume estimation of most agricultural products using mathematical methods is not accurate because of their irregular shape. an alternative method is image processing, which can be used in continuous sorting machines. the objective of this study is to find a practical method for volume estimation of potatoes using image processing. fifty potatoes (marfona variety) were selected as experimental ...

Journal: :تحقیقات آب و خاک ایران 0
اسماعیل بیات کارشناس منابع آب، مهندسان مشاور یکم دالی بندار رئیس گروه بررسی های فنی و اجتماعی دفتر مهندسی و معیارهای فنی آب و آبفا وزارت نیرو سعید لطفی کارشناس گروه سیاست گذاری و تخصیص آب دفتر برنامه ریزی کلان آب و آبفا وزارت نیرو

sedimentation in reservoirs reduces dams storage and makes many problems in their operation. therefore accurate computation of sediment volume is essential for appropriate design and optimum reservoir management during its operation. in this research long term field data of sefid-rood dam were used to check the sediment volume computed for ghezelozan basin. the computed volume of sediment by ra...

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