scholarly journals Numerical comparison of hybridized discontinuous Galerkin and finite volume methods for incompressible flow

2014 ◽  
Vol 76 (5) ◽  
pp. 267-281 ◽  
Author(s):  
T. Ahnert ◽  
G. Bärwolff
Keyword(s):  
Discontinuous Galerkin ◽  
Finite Volume ◽  
Incompressible Flow ◽  
Finite Volume Methods ◽  
Numerical Comparison

scholarly journals Point-wise hierarchical reconstruction for discontinuous Galerkin and finite volume methods for solving conservation laws

2011 ◽  
Vol 230 (17) ◽  
pp. 6843-6865 ◽  
Author(s):  
Zhiliang Xu ◽  
Yingjie Liu ◽  
Huijing Du ◽  
Guang Lin ◽  
Chi-Wang Shu
Keyword(s):  
Conservation Laws ◽  
Discontinuous Galerkin ◽  
Finite Volume ◽  
Finite Volume Methods

Effect of Slit Inclusions in Drag Reduction of Flow over Cylinders

2016 ◽  
Vol 846 ◽  
pp. 18-22
Author(s):  
Rohit Bhattacharya ◽  
Abouzar Moshfegh ◽  
Ahmad Jabbarzadeh
Keyword(s):  
Fluid Flow ◽  
Drag Reduction ◽  
Drag Coefficient ◽  
Finite Volume ◽  
Lattice Boltzmann ◽  
Circular Cross Section ◽  
Finite Volume Methods ◽  
Turbulent Regime ◽  
Ansys Fluent ◽  
Comparison Of The Results

The flow over bluff bodies is separated compared to the flow over streamlined bodies. The investigation of the fluid flow over a cylinder with a streamwise slit has received little attention in the past, however there is some experimental evidence that show for turbulent regime it reduces the drag coefficient. This work helps in understanding the fluid flow over such cylinders in the laminar regime. As the width of the slit increases the drag coefficient keeps on reducing resulting in a narrower wake as compared to what is expected for flow over a cylinder. In this work we have used two different approaches in modelling a 2D flow for Re=10 to compare the results for CFD using finite volume method (ANSYS FLUENTTM) and Lattice Boltzmann methods. In all cases cylinders of circular cross section have been considered while slit width changing from 10% to 40% of the cylinder diameter. . It will be shown that drag coefficient decreases as the slit ratio increases. The effect of slit size on drag reduction is studied and discussed in detail in the paper. We have also made comparison of the results obtained from Lattice Boltzmann and finite volume methods.

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