نتایج جستجو برای: fsi

تعداد نتایج: 1238  

2003
F. Kleefeld

The present status of the theoretical description of Initial (ISI) and Final State Interactions (FSI) in nucleon induced exclusive meson production processes close to threshold is reviewed. Shortcomings are addressed and new perspectives given. It is quite surprising, that the discussion of the theoretical description of ISI and FSI in nuclear and particle collision/production processes is gain...

2016
BORIS MUHA SUNCICA CANIC

The long-time existence of a weak solution is proved for a nonlinear, fluid-structure interaction (FSI) problem between an incompressible, viscous fluid and a semilinear cylindrical Koiter membrane shell with inertia. No axial symmetry is assumed in the problem. The fluid flow is driven by the timedependent dynamic pressure data prescribed at the inlet and outlet boundaries of the 3D cylindrica...

2015
S. M. Abdul Khader Anurag Ayachit Raghuvir Pai K. A. Ahmed V. R. K. Rao S. Ganesh Kamath

The numerical simulation has made tremendous advances in investigating the blood flow phenomenon through elastic arteries. Such study can be useful in demonstrating the disease progression and hemodynamics of cardiovascular diseases such as atherosclerosis. In the present study, patient specific case diagnosed with partially stenosed complete right ICA and normal left carotid bifurcation withou...

Journal: :Frontiers in Energy Research 2022

Pipe vibration induced by water hammer frequently emerges in conveyance system, especially the hydropower plant or pumped storage power station with long diversion pipelines. This turn affects hydraulic pulsation so that undesired fluid-structure interaction (FSI) arises. In this research, attention is given to a pipeline embedded concrete. A six-equation model was derived describe fluid-pipe-c...

Journal: :Physical Review C 2022

The description of final-state interactions (FSI) in the large phase space probed neutrino experiments poses a great challenge. In experiments, which operate under semi-inclusive conditions, cascade models are commonly used for this task, while exclusive conditions FSI can be treated with relativistic optical potentials (ROP). We formulate ROP approach and model directly compared. feed NEUT eve...

2006
M. P. Barkley

Atmospheric CO2 concentrations, retrieved from spectral measurements made in the near infrared (NIR) by the SCIAMACHY instrument, using Full Spectral Initiation Weighting Function Modified Differential Optical Absorption Spectroscopy (FSI WFM-DOAS), are compared to ground based Fourier Transform Infrared (FTIR) data and to the output from a global chemistry-transport model. Analysis of the FSI ...

ژورنال: :فصل نامه علمی پژوهشی مهندسی پزشکی زیستی 2008
افسانه محری محمد تفضلی شادپور احسان بخشی تفتی

گرفتگی های شریانی و بیماری های قلبی- عروقی ناشی از آن مانند تصلب شرائین، از دلایل عمده مرگ و میر در دنیاست. در این مقاله، با استفاده از یک مدل غیرخطی سه بعدی از شریان کاروتید دارای گرفتگی نامتقارن و با در نظر گرفتن تعامل میان جامد و سیال (fsi)، جریان خون در این شرایط مدلسازی شد. برای انجام دادن شبیه سازی از نرم افزار انسیس بهره گرفته شد. با توجه به بررسی های انجام گرفته این نرم افزار از توانایی...

2016
Samuel Voß Sylvia Glaßer Thomas Hoffmann Oliver Beuing Simon Weigand Katja Jachau Bernhard Preim Dominique Thévenin Gábor Janiga Philipp Berg

Computational Fluid Dynamics is intensively used to deepen the understanding of aneurysm growth and rupture in order to support physicians during therapy planning. However, numerous studies considering only the hemodynamics within the vessel lumen found no satisfactory criteria for rupture risk assessment. To improve available simulation models, the rigid vessel wall assumption has been discard...

2009
Lin Wang Xueguan Song Youngchul Park

Nowadays, numerical analysis becames more and more popular in designing large butterfly valve. In this paper, fluid structure interface(FSI) analysis is carried out to estimate fluid field and performance of large butterfly valve in diameter of 2.2m. A three-dimensional model of butterfly valve is used to do simulation perfectly. The FSI analysis not only analyzes the fluid field at various val...

Journal: :The Journal of the Acoustical Society of America 2007
Olivier Doutres Nicolas Dauchez Jean-Michel Génevaux Olivier Dazel

The validity of using the limp model for porous materials is addressed in this paper. The limp model is derived from the poroelastic Biot model assuming that the frame has no bulk stiffness. Being an equivalent fluid model accounting for the motion of the frame, it has fewer limitations than the usual equivalent fluid model assuming a rigid frame. A criterion is proposed to identify the porous ...

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