scholarly journals More Than One Force of Nature

2002 ◽  
Vol 124 (02) ◽  
pp. 49-51 ◽  
Author(s):  
Jean Thilmany
Keyword(s):  
Finite Element ◽  
Fluid Flow ◽  
Working Conditions ◽  
Real Life ◽  
Algebraic Equations ◽  
Flow Through ◽  
Computational Fluid Flow ◽  
Physical Phenomena ◽  
Near Future ◽  
Nonlinear Geometric

This article reviews how engineers can examine multiple influences in only one simulation by using multiphysics technologies. Engineers simulate the model more realistically rather than see the result of one analysis and then the result of another as an unrelated case. Engineers can simulate, say, the combined electrical and mechanical behavior of an overall system as a part of one virtual prototype. Multiphysics, then, can be looked at as a series of finite element and computational fluid flow analyses (FEA/CFD) layered on top of each other to describe the whole and real-life working conditions of the part. FEA solves simultaneous algebraic equations and lets engineers simulate a wide variety of physical phenomena, including laminar flow, turbulent flow, impact, and nonlinear geometric or material simulations. CFD describes how a fluid will flow through a system. With the development of increasingly easier-to-use multiphysics programs, it is likely that more engineering firms will be turning toward these full-scale analyses packages in the near future.

scholarly journals Modeling and Simulation of Newtonian Fluid Flow through Two-Dimensional Backward-Facing Step Channel with Finite Element�s Technique

2019 ◽  
Vol 12 (32) ◽  
pp. 1-6
Author(s):  
Abid Ali Memon ◽  
Hisam-uddin Shaikh ◽  
Baqir Ali Shah ◽  
Muhammad Afzal Soomro ◽  
Abdul Ghafoor Shaikh ◽  
...  
Keyword(s):  
Finite Element ◽  
Fluid Flow ◽  
Modeling And Simulation ◽  
Newtonian Fluid ◽  
Two Dimensional ◽  
Backward Facing Step ◽  
Flow Through

Analytical Solution of Unsteady Casson Fluid Flow Through a Vertical Cylinder with Slip Velocity Effect

2021 ◽  
Vol 87 (1) ◽  
pp. 68-75
Author(s):  
Wan Faezah Wan Azmi ◽  
Ahmad Qushairi Mohamad ◽  
Lim Yeou Jiann ◽  
Sharidan Shafie
Keyword(s):  
Fluid Flow ◽  
Analytical Solution ◽  
Newtonian Fluid ◽  
Analytical Solutions ◽  
Slip Velocity ◽  
Fluid Velocity ◽  
Real Life ◽  
Casson Fluid ◽  
Flow Through ◽  
Velocity Effect

Casson fluid is a non-Newtonian fluid with its unique fluid behaviour because it behaves like an elastic solid or liquid at a certain condition. Recently, there are several studies on unsteady Casson fluid flow through a cylindrical tube have been done by some researchers because it is related with the real-life applications such as blood flow in vessel tube, chemical and oil flow in pipelines and others. Therefore, the main purpose of the present study is to obtain analytical solutions for unsteady flow of Casson fluid pass through a cylinder with slip velocity effect at the boundary condition. Dimensional governing equations are converted into dimensionless forms by using the appropriate dimensionless variables. Dimensionless parameters are obtained through dimensionless process such as Casson fluid parameters. Then, the dimensionless equations of velocity with the associated initial and boundary conditions are solved by using Laplace transform with respect to time variable and finite Hankel transform of zero order with respect to the radial coordinate. Analytical solutions of velocity profile are obtained. The obtained analytical result for velocity is plotted graphically by using Maple software. Based on the obtained result, it can be observed that increasing in Casson parameter, time and slip velocity will lead to increment in fluid velocity. Lastly, Newtonian fluid velocity is uniform from the boundary to the center of cylinder while Casson fluid velocity is decreased when approaching to the center of cylinder. The present result is validated when the obtained analytical solution of velocity is compared with published result and found in a good agreement.

Estimating Fatigue Life of Thermowells in Supercritical Operation

2018 ◽  
Author(s):  
Philip Diwakar ◽  
Yuqing Liu ◽  
Matt Jaouhari
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fluid Flow ◽  
Fatigue Life ◽  
Element Analysis ◽  
Flow Through ◽  
Case Basis ◽  
Cycles To Failure

Designing structures resistant to failure due to fluid induced vibration is a challenge. This paper shows a methodology of evaluating the cycles to failure of thermowells placed in a fluid flow through a large pipe in supercritical operation. The ASME PTC guide describes using Finite Element Analysis (FEA) to evaluate these conditions on a case by case basis. One case from several validated cases is presented using measurements available from the field.

3D finite element simulation of fluid flow through a SMX static mixer

1998 ◽  
Vol 22 ◽  
pp. S759-S761 ◽  
Author(s):  
Louis Fradette ◽  
Huai Z. Li ◽  
Lionel Choplin ◽  
Philippe Tanguy
Keyword(s):  
Finite Element ◽  
Fluid Flow ◽  
Finite Element Simulation ◽  
Static Mixer ◽  
3D Finite Element ◽  
Element Simulation ◽  
Flow Through ◽  
Smx Static Mixer

A Mathematical Model for Understanding Fluid Flow Through Engineered Tissues Containing Microvessels

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
Kristen T. Morin ◽  
Michelle S. Lenz ◽  
Caroline A. Labat ◽  
Robert T. Tranquillo
Keyword(s):  
Mathematical Model ◽  
Finite Element ◽  
Fluid Flow ◽  
Point Sources ◽  
Fe Model ◽  
Potential Utility ◽  
Single Tube ◽  
Sources And Sinks ◽  
Capillary Networks ◽  
Flow Through

Knowledge is limited about fluid flow in tissues containing engineered microvessels, which can be substantially different in topology than native capillary networks. A need exists for a computational model that allows for flow through tissues dense in nonpercolating and possibly nonperfusable microvessels to be efficiently evaluated. A finite difference (FD) model based on Poiseuille flow through a distribution of straight tubes acting as point sources and sinks, and Darcy flow through the interstitium, was developed to describe fluid flow through a tissue containing engineered microvessels. Accuracy of the FD model was assessed by comparison to a finite element (FE) model for the case of a single tube. Because the case of interest is a tissue with microvessels aligned with the flow, accuracy was also assessed in depth for a corresponding 2D FD model. The potential utility of the 2D FD model was then explored by correlating metrics of flow through the model tissue to microvessel morphometric properties. The results indicate that the model can predict the density of perfused microvessels based on parameters that can be easily measured.

Numerical Simulation of Francis Turbine

2014 ◽  
Author(s):  
Raza A. Saeed
Keyword(s):  
Finite Element ◽  
Fluid Flow ◽  
Water Pressure ◽  
Three Dimensional ◽  
Element Model ◽  
Francis Turbine ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Turbine Runner ◽  
Flow Through

This paper presents the results of modelling of the complete three-dimensional fluid flow through the spiral casing, stay vanes, guide vanes, and then through the Francis turbine runner to the draft tube of the Derbendikhan power station. To investigate the flow in the Francis turbine and also to compute stress distribution in the runner blades, a three-dimensional model was prepared according to specifications provided. The two topics discussed in this study are: (i) the simulation of the 3D fluid flow through the inter blade channels for the Francis turbine runner by using Computational Fluid Dynamics (CFD) and, (ii) the simulation of the stress analysis of the turbine runner by using Finite Element Analysis (FEA). In this study, the water pressure obtained from the CFD analysis for different boundary conditions are incorporated into a Finite Element model to calculate stress distributions in the runner.

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