scholarly journals YAQUI: an arbitrary Lagrangian--Eulerian computer program for fluid flow at all speeds

1973 ◽  
Author(s):  
A.A. Amsden ◽  
C.W. Hirt
Keyword(s):  
Fluid Flow ◽  
Computer Program ◽  
Arbitrary Lagrangian Eulerian ◽  
All Speeds

Effects of Real Surface Roughness on Fluid Flow in Nanochannels

2010 ◽  
Author(s):  
Ali Kharazmi ◽  
Reza Kamali
Keyword(s):  
Molecular Dynamics ◽  
Surface Roughness ◽  
Fluid Flow ◽  
Computer Program ◽  
Md Simulation ◽  
Real Surface ◽  
Micro Channels

In the present study, a computer program based on a molecular dynamics scheme has been developed for simulating fluid flow in nano- and micro-channels with roughness. According to the previous studies of nanochannels flows, surface roughness has a great effect on the rheology of the flow. Therefore a more realistic surface roughness has been developed and its influence on the fluid flow has been investigated using Molecular Dynamics (MD) Simulation.

Simulation Analysis of Fluid-Structure Interactions with Moving Mesh

2011 ◽  
Vol 305 ◽  
pp. 235-238 ◽  
Author(s):  
Ming Li Sun ◽  
De Wu ◽  
Ming Qiang Wang ◽  
Sheng Fei Jin ◽  
Kan Zhi Wang
Keyword(s):  
Fluid Flow ◽  
Simulation Analysis ◽  
Moving Boundaries ◽  
Moving Mesh ◽  
Comsol Multiphysics ◽  
Moving Grid ◽  
Arbitrary Lagrangian Eulerian ◽  
Fluid Structure Interactions ◽  
Fluid Structure ◽  
Deforming Geometry

This paper demonstrates techniques for modeling fluid-structure interactions with moving mesh in COMSOL Multiphysics. It illustrates how fluid flow can deform surrounding structures and how to solve for the flow in a continuously deforming geometry using the arbitrary Lagrangian-Eulerian (ALE) technique. The ALE method handles the dynamics of the deforming geometry and the moving boundaries with a moving grid.

A robust multi-grid pressure-based algorithm for multi-fluid flow at all speeds

2003 ◽  
Vol 41 (11) ◽  
pp. 1221-1251 ◽  
Author(s):  
M. Darwish ◽  
F. Moukalled ◽  
B. Sekar
Keyword(s):  
Fluid Flow ◽  
All Speeds

Reducing Roll Motion by Passive Free Surface Tanks

2014 ◽  
Author(s):  
Christian S. Nielsen ◽  
Ulrik D. Nielsen
Keyword(s):  
Mathematical Model ◽  
Fluid Flow ◽  
Free Surface ◽  
Flow Model ◽  
Low Cost ◽  
Roll Motion ◽  
Numerical Example ◽  
Damping Effect ◽  
Cargo Capacity ◽  
All Speeds

Roll stabilisation of motorised vessels plays an important part in reducing passenger discomfort and increasing safety and cargo capacity. Passive free surface tanks are considered a low-cost stabilising method, which is efficient at all speeds without increasing hull resistance. In this study, a mathematical model for evaluating the performance of a passive free surface tank is established. This is done by coupling a roll model to a fluid flow model. As a numerical example, the seakeeping abilities of a container vessel are evaluated. The necessary methods for performing the simulation are presented and the design of a free surface tank is explained. The effects of the passive free surface tank are evaluated and a significant damping effect is observed, particularly in cases with resonant roll.

A Study Regarding Smoke Exhaust from an Atrium Type Building in a Fire Situation

2017 ◽  
Vol 21 ◽  
pp. 15-21
Author(s):  
Zeno Cosmin Grigoraş ◽  
Dan Diaconu-Şotropa
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Fluid Flow ◽  
Computer Program ◽  
Maximum Temperature ◽  
Layer Height ◽  
European Legislation ◽  
Smoke Layer

This paper presents the analysis of the effect of smoke exhaust and hot gases from an atrium type building using techniques for numerical simulation of a fire situation. Several scenarios regarding smoke exhaust are considered for that purpose and the variation of the following parameters is monitored: minimum and maximum temperature of hot gases as well as the smoke layer height inside the atrium. Using engineering techniques, the development of fire, in compliance with the European legislation has been modelled, by means of a specialized computer program in order to simulate the phenomena of both the fluid flow and the heat transfer manifested in a fire situation.

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