scholarly journals Adaptive numerical simulations with Trixi.jl: A case study of Julia for scientific computing

2022 ◽  
Vol 1 (1) ◽  
pp. 77
Keyword(s):  
Numerical Simulations ◽  
Scientific Computing

Understanding Immiscible Natural Gas Huff-N-Puff Seepage Mechanism in Porous Media: A Case Study of CH4 Huff-N-Puff by Laboratory Numerical Simulations in Chang-7 Tight Core

2021 ◽  
Vol 30 (3) ◽  
pp. 2397-2411
Author(s):  
Taiyi Zheng ◽  
Zhengming Yang ◽  
Xiangui Liu ◽  
Yutian Luo ◽  
Qianhua Xiao ◽  
...  
Keyword(s):  
Porous Media ◽  
Natural Gas ◽  
Numerical Simulations

Impact of Carotid Stent Cell Design on Vessel Scaffolding: A Case Study Comparing Experimental Investigation and Numerical Simulations

2011 ◽  
Vol 18 (3) ◽  
pp. 397-406 ◽  
Author(s):  
Michele Conti ◽  
Denis Van Loo ◽  
Ferdinando Auricchio ◽  
Matthieu De Beule ◽  
Gianluca De Santis ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Numerical Simulations ◽  
Cell Design ◽  
Carotid Stent

Effect of Axial Gap between Diffuser Inlet and Impeller on Efficiency and Flow Pattern of Centrifugal Fans

2013 ◽  
Vol 446-447 ◽  
pp. 621-625
Author(s):  
Mojtaba Gholamian ◽  
Gurram Krishna Mohan Rao ◽  
Bhramara Panitapu
Keyword(s):  
Numerical Simulations ◽  
Flow Pattern ◽  
Squirrel Cage ◽  
Centrifugal Fans ◽  
And Performance

Inlet is one of the basic elements of squirrel cage fan that can have great effect on performance and losses, especially between inlet exit and first section of impeller width. In this paper the effect of axial gap between inlet diffuser and impeller on performance and flow pattern is considered. Three diffuser inlet sizes with respect to impeller size (smaller, nearly same and bigger than inner impeller diameter) and three axial gaps within the available dimensions of the casing and impeller were chosen. Numerical simulations were performed to find the effect of this axial gap on flow pattern, performance and efficiency. From the simulation of each case study, flow pattern and its mechanism and the causes that affecting the efficiency and performance due to axial gap are analyzed and presented.

scholarly journals Analysis of Cyclist’s Drag on the Aero Position Using Numerical Simulations and Analytical Procedures: A Case Study

2020 ◽  
Vol 17 (10) ◽  
pp. 3430 ◽  
Author(s):  
Pedro Forte ◽  
Daniel A. Marinho ◽  
Pantelis T. Nikolaidis ◽  
Beat Knechtle ◽  
Tiago M. Barbosa ◽  
...  
Keyword(s):  
Linear Regression ◽  
Numerical Simulations ◽  
Three Dimensional ◽  
Three Dimensional Model ◽  
Paired Samples ◽  
Computational Fluid Dynamics Cfd ◽  
Analytical Procedures ◽  
Previous Training ◽  
Very High

Background: Resistance acting on a cyclist is a major concern among the cycling fraternity. Most of the testing methods require previous training or expensive equipment and time-consuming set-ups. By contrast, analytical procedures are more affordable and numerical simulations are perfect for manipulating and controlling inputs. The aim of this case study was to compare the drag of a cyclist in the aero position as measured using numerical simulation and analytical procedures. Methods: An elite male cyclist (65 kg in mass and 1.72 m in height) volunteered to take part in this research. The cyclist was wearing his competition gear, helmet and bicycle. A three-dimensional model of the bicycle and cyclist in the aero position was obtained to run the numerical simulations. Computational fluid dynamics (CFD) and a set of analytical procedures were carried out to assess drag, frontal area and drag coefficient, between 1 m/s and 22 m/s, with increments of 1 m/s. The t-test paired samples and linear regression were selected to compare, correlate and assess the methods agreement. Results: No significant differences (t = 2.826; p = 0.275) between CFD and analytical procedures were found. The linear regression showed a very high adjustment for drag (R2 = 0.995; p < 0.001). However, the drag values obtained by the analytical procedures seemed to be overestimated, even though without effect (d = 0.11). Conclusions: These findings suggest that drag might be assessed using both a set of analytical procedures and CFD.

scholarly journals Application of Numerical and Physical Simulation to Design of the Best Manufacturing Technology for Fasteners

2015 ◽  
Vol 60 (1) ◽  
pp. 455-460 ◽  
Author(s):  
J. Kusiak ◽  
M. Skóra ◽  
Ł. Rauch ◽  
D. Szeliga ◽  
M. Pietrzyk
Keyword(s):  
Tool Wear ◽  
Numerical Simulations ◽  
Physical Simulation ◽  
Manufacturing Technology ◽  
Manufacturing Costs ◽  
Bainitic Steels ◽  
The Subject ◽  
Concrete Plates ◽  
New Generation

Abstract The development of the best manufacturing technology for fasteners was the subject of this work. Physical and numerical simulations were used to evaluate various technological variants. Possibility of application of new generation bainitic steels was considered, as well. Improvement of exploitation properties was the objective of the optimization having in mind tool wear and manufacturing costs as constraints. Several fasteners were investigated but results for three parts, including Allen screw, screw anchors used to carry concrete plates are presented as a case study. Industrial trials were performed and confirmed correctness of the designed manufacturing technology.

Case Study: Numerical Simulations of Debris Flow below Stože, Slovenia

2006 ◽  
Vol 132 (2) ◽  
pp. 121-130 ◽  
Author(s):  
Matjaž Četina ◽  
Rudi Rajar ◽  
Tomaž Hojnik ◽  
Majda Zakrajšek ◽  
Mario Krzyk ◽  
...  
Keyword(s):  
Debris Flow ◽  
Numerical Simulations
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