نتایج جستجو برای: vof method

تعداد نتایج: 1630549  

2005
Vadim Dyadechko Mikhail Shashkov

We designed a new volume-conservative interface reconstruction method. An input data set for the interface reconstruction algorithm consists of volumes and centroids of the cell fractions occupied by different materials. Compared to pure volume fractions, traditionally used by volume-of-fluid (VoF) methods, this choice of the input data allows to define a linear interface approximation per mixe...

2013
M. Raessi J. Mostaghimi M. Bussmann

In simulating free-surface flows, the interface normal vectors and curvature are needed for modelling surface tension e↵ects. We present a new method for accurately calculating these quantities. In this method, an entirely di↵erent approach is taken, compared to common methods where normals and curvature are obtained from the Volume-of-Fluid (VOF) or Level Set (LS) functions. In this fixed-grid...

Journal: :Journal of Chemical Engineering of Japan 2023

In this study, an efficient conversion algorithm of level set function ϕ from volume fraction α is developed. This method makes the calculation easier than conventional CLSVOF method, and precision surface tension can be improved by application ϕ. The two numerical tests are shown to demonstrate proposed scheme. As a result demonstration tests, it obtained that (a) gives better existing simple ...

Journal: :Research Journal of Applied Sciences, Engineering and Technology 2013

Journal: :Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 2013

2009
S. PATIL M. KOSTIC P. MAJUMDAR

The bridge ‘hydraulics analysis and design’ could be substantially enhanced using advanced commercial Computational Fluid Dynamics (CFD) software and powerful parallel computing resources. The objective of the present study is to validate STAR-CD commercial CFD software for the bridge hydraulics research. This study simulates limited scaled experimental data conducted elsewhere for bridge flood...

Journal: :PROCEEDINGS OF HYDRAULIC ENGINEERING 2001

Journal: :Journal of Korean navigation and port research 2005

Journal: :Dalton transactions 2011
Farida H Aidoudi Peter J Byrne Pheobe K Allan Simon J Teat Philip Lightfoot Russell E Morris

An exploratory study of the synthesis of vanadium (oxy)fluorides (VOFs) using ionic liquids (ILs) and deep eutectic mixtures (DESs) as a solvent yielded 10 different materials. The previously reported chain type: (NH(4))(2)VF(5) (1), (NH(4))(2)VOF(4) (2), NH(4)VO(3) (3) and (H(2)NH(2)(CH(2))(2)NH(2))VF(5) (9) have been successfully produced for the first time using ILs as the reaction media. Th...

2008
L. Knutsson A. Rydhög D. van Westen S. Holtås F. Ståhlberg R. Wirestam

Purpose Reproducible absolute quantification of cerebral blood volume (CBV) and cerebral blood flow (CBF) by dynamic susceptibility contrast MRI (DSC-MRI) is difficult to achieve, for example, due to partial-volume effects (PVEs). Rescaling of the arterial input function (AIF) using a corrected venous output function (VOF) in DSC-MRI has been shown to improve the correlation between CBF estimat...

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