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| 1 | Multidimensional modeling of the stenosed carotid artery: A novel CAD approach accompanied by an extensive lumped model显示文摘This study describes a multidimensional 3D/lumped parameter(LP) model which contains appropriate inflow/outflow boundary conditions in order to model the entire human arterial trees. A new extensive LP model of the entire arterial network(48 arteries) was developed including the effect of vessel diameter tapering and the parameterization of resistance, conductor and inductor variables. A computer aided-design(CAD) algorithm was proposed to effciently handle the coupling of two or more 3D models with the LP model, and substantially lessen the coupling processing time. Realistic boundary conditions and Navier–Stokes equations in healthy and stenosed models of carotid artery bifurcation(CAB) were used to investigate the unsteady Newtonian blood flow velocity distribution in the internal carotid artery(ICA). The present simulation results agree well with previous experimental and numerical studies. The outcomes of a pure LP model and those of the coupled 3D healthy model were found to be nearly the same in both cases. Concerning the various analyzed 3D zones, the stenosis growth in the ICA was not found as a crucial factor in determining the absorbing boundary conditions.This paper demonstrates the advantages of coupling local and systemic models to comprehend physiological diseases of the cardiovascular system. | A.Kashefi M.Mahdinia B.Firoozabadi M.Amirkhosravi G.Ahmadi M.S.Saidi | 2014 | Acta Mechanica Sinica2014，30，2： | 2 |
| 2 | Determination of Set-tling Tanks Performance Using an Eulerian-Lagrangian Method显示文摘 | A.Tamayol B.Firoozabadi G.Ahmadi | | 0，，01： | 1 |
| 3 | Effect of correcting near-wall forces on nanoparticle transport in a microchannel显示文摘This paper studies the importance of corrections that account for the presence of walls on the forces acting on nanoparticles during their transport in microchannels.Theoretical and experimental investigations have reported anisotropic and hindered motion of nanoparticles near a microchannel wall.To investigate the influence of the near-wall effects,various conditions were examined.In particular,computer simulations were performed with and without the near-wall correction of forces.The corresponding capture efficiency and the average penetration of the captured nanoparticles were compared,and the importance of the near-wall corrections was assessed.Effects were evaluated for the nanoparticle diameter,the channel width,the channel length,and the pressure gradient.The results indicate that the inclusion of wall effects is crucial for the analysis of nanoparticle transport in microchannels. | S.Andarwa H.Basirat Tabrizi G.Ahmadi | 2014 | Particuology2014，12，5： | 1 |
| 4 | 多层建筑地震反应对隔震系统参数变化的敏感性分析显示文摘一、前言本文讨论基底隔震多层建筑的地震峰值反应,包括上部结构的峰值加速度和峰值挠度、基底的峰值位移和峰值相对滑移位移反应受隔震系参数变化影响的敏感性。 | F.G.Fan G.Ahmadi N.Mostaghel I.G.Tadjbakhsh 朱万一 | 1992 | 世界地震工程1992，8，4： | 1 |
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