مرور Volume 48, Issue 2 بر اساس عنوان
در حال نمایش موارد 1 - 16 از 16
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Accelerating high-order WENO schemes using two heterogeneous GPUs (University of Tehran, 2017-12-01)A double-GPU code is developed to accelerate WENO schemes. The test problem is a compressible viscous flow. The convective terms are discretized using third- to ninth-order WENO schemes and the viscous terms are discretized ...
 
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Analysis and Optimization using Renewable Energies to Get Net-Zero Energy Building for Warm Climate (University of Tehran, 2017-12-01)Due to low energy price, economic optimization of consumption has no justification for users in Iran. Nowadays, the issue of ending fossil fuels, production of greenhouse gases and the main role of building in consumption ...
 
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Analysis of Flow of Nanofluid through a Porous Channel with Expanding or Contracting Walls using Chebychev Spectral Collocation Method (University of Tehran, 2017-12-01)In this work, we applied Chebychev spectral collocation method to analyze the unsteady two-dimensional flow of nanofluid in a porous channel through expanding or contracting walls with large injection or suction. The ...
 
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Applications of higher order shear deformation theories on stress distribution in a five layer sandwich plate (University of Tehran, 2017-12-01)In this paper, layerwise theory (LT) along with the first, second and third-order shear deformation theories (FSDT, SSDT and TSDT) are used to determine the stress distribution in a simply supported square sandwich plate ...
 
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Incremental explosive analysis and its application to performance-based assessment of stiffened and unstiffened plates (University of Tehran, 2017-12-01)In this paper, the dynamic behavior of square plates with various thicknesses and stiffening configurations subjected to underwater explosion (UNDEX) are evaluated through a relatively novel approach which is called ...
 
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Multi-objective Optimization of web profile of railway wheel using Bi-directional Evolutionary Structural Optimization (University of Tehran, 2017-12-01)In this paper, multi-objective optimization of railway wheel web profile using bidirectional evolutionary structural optimization (BESO) algorithm is investigated. Using a finite element software, static analysis of the ...
 
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A new approach for nonlinear vibration analysis of thin and moderately thick rectangular plates under inplane compressive load (University of Tehran, 2017-12-01)In this study, a hybrid method is proposed to investigate the nonlinear vibrations of pre- and post-buckled rectangular plates for the first time. This is an answer to an existing need to develope a fast and precise numerical ...
 
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A novel computational procedure based on league championship algorithm for solving an inverse heat conduction problem (University of Tehran, 2017-12-01)Inverse heat conduction problems, which are one of the most important groups of problems, are often ill-posed and complicated problems, and their optimization process has lots of local extrema. This paper provides a novel ...
 
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Numerical and Economic Study of Performance of Centrifugal Pump as Turbine (University of Tehran, 2017-12-01)In this paper, performance of centrifugal pump as turbine (PAT) is investigated numerically. Three different specific speeds are considered and three pumps are designed using diagrams from catalogues and CFturbo V.9 software. ...
 
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On the Analysis of Laminar Flow of Viscous Fluid through a Porous Channel with Suction/Injection at Slowly Expanding or Contracting Walls (University of Tehran, 2017-12-01)The vast biological and industrial applications of laminar flow of viscous fluid through a porous channel with contracting or expanding permeable wall have attest to the importance of studying the flow process. In this ...
 
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Performance Improvements of a Centrifugal Pump with Different Impellers using Polymer Additive (University of Tehran, 2017-12-01)In this study, the performance of a centrifugal pump is investigated by adding polyacrylamide (PAM) polymer over the working fluid which is tap water in this case. PAM is a long chain polymer that leads to reduce the wall ...
 
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Power Series -Aftertreatment Technique for Nonlinear Cubic Duffing and Double-Well Duffing Oscillators (University of Tehran, 2017-12-01)Modeling of large amplitude of structures such as slender, flexible cantilever beam and fluid-structure resting on nonlinear elastic foundations or subjected to stretching effects often lead to strongly nonlinear models ...
 
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Prediction of Temperature distribution in Straight Fin with variable Thermal Conductivity and Internal Heat Generation using Legendre Wavelet Collocation Method (University of Tehran, 2017-12-01)Due to increasing applications of extended surfaces as passive methods of cooling, study of thermal behaviors and development of mathematical solutions to nonlinear thermal models of extended surfaces have been the subjects ...
 
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A review of functionally graded thick cylindrical and conical shells (University of Tehran, 2017-12-01)Thick shells have attracted much attention in recent years as intelligent and functional graded materials because of their unique properties. In this review paper, some critical issues and problems in the development of ...
 
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Simulation of Stresses Induced by Heat and Mass Transfer in Drying Process of Clay-like Material (University of Tehran, 2017-12-01)Drying represents one of the oldest unit operations employed in industrial processes. Drying is viewed as a process of simultaneous heat and mass transfer. Porous Clay-like material undergoes stresses due to non-uniform ...
 
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Simulation of the Mode I fracture of concrete beam with cohesive models (University of Tehran, 2017-12-01)Crack propagation modeling in quasi-brittle materials such as concrete is essential for improving the reliability and load-bearing capacity assessment. Crack propagation explains many failure characteristics of concrete ...
 



