scholarly journals SALE: a simplified ALE computer program for fluid flow at all speeds

1980 ◽  
Author(s):  
A.A. Amsden ◽  
H.M. Ruppel ◽  
C.W. Hirt
Keyword(s):  
Fluid Flow ◽  
Computer Program ◽  
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.

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.

scholarly journals Induced velocities outside the ideal propeller jet

2021 ◽  
Vol 3 (397) ◽  
pp. 33-44
Author(s):  
Kotlovich V. ◽  
Keyword(s):  
Fluid Flow ◽  
Computer Program ◽  
Ideal Fluid ◽  
Direct Determination ◽  
Radial Component ◽  
Full Agreement ◽  
Induced Flow ◽  
Labor Consuming ◽  
The Ideal

Object and purpose of research. The paper is devoted to the analysis of induced flow velocities outside the ideal propeller jet. The purpose is to widen capabilities of estimations. Materials and methods. Analysis of data on this issue has shown that complicated and quite labor-consuming methods are used for these purposes. It is attempted to devise a calculation scheme based on direct determination of induced velocities from discrete sinks simulating the ideal propeller. For this purpose an algorithm and software is developed for PC implementation. Testing of the computer program allowed us to define conditions ensuring the accuracy of calculations, it confirmed practically full agreement with the data obtained by other authors and possibility for widening the range of its application. Main results. Systematic calculations of induced velocities outside the ideal propeller jet were done allowing us to determine the flow velocity at any point of a wide area for engineering purposes. Conclusion. Longitudinal and radial component velocities induced by ideal propeller outside its jet were calculated based on directly assessed influence of the system of sinks distributed over the propeller disk on the ideal fluid flow. The algorithm for calculations was developed, the software was written and tested. Systematic calculations of induced velocities were done, which could be used for practical estimations.

Sign in / Sign up

Export Citation Format

Share Document