A direct numerical simulation-based investigation and modeling of pressure Hessian effects on compressible velocity gradient dynamics

2014 ◽  
Vol 26 (12) ◽  
pp. 126103 ◽  
Author(s):  
Mohammad Danish ◽  
Sawan Suman ◽  
Balaji Srinivasan
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Velocity Gradient ◽  
Gradient Dynamics ◽  
Simulation Based

Direct numerical simulation–based Reynolds-averaged closure for bubble-induced turbulence

2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Tian Ma ◽  
Claudio Santarelli ◽  
Thomas Ziegenhein ◽  
Dirk Lucas ◽  
Jochen Fröhlich
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Simulation Based

Direct numerical simulation of strong compression of the axisymmetric gas cavity in a liquid

2007 ◽  
Vol 5 ◽  
pp. 73-78
Author(s):  
A.A. Aganin ◽  
T.F. Khalitova ◽  
N.A. Khismatullina
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Gas Bubble ◽  
Godunov Scheme ◽  
Smooth Solutions ◽  
Order Accuracy ◽  
First Order ◽  
Simulation Based ◽  
Strong Compression ◽  
Gas Cavity

A technique for computing strong compression of an axisymmetric gas bubble in a liquid by direct numerical simulation based on the equations of fluid dynamics is presented. This technique uses a scheme of the second-order accuracy in space and time for smooth solutions. Some results of numerical investigation of efficiency of this technique are given. It is established that this technique is much more effective than the classical first order accurate Godunov scheme widely known in the literature.

scholarly journals Effects of viscoelasticity on shear-thickening in dilute suspensions in a viscoelastic fluid

Soft Matter ◽  
2020 ◽  
Vol 16 (3) ◽  
pp. 728-737
Author(s):  
Yuki Matsuoka ◽  
Yasuya Nakayama ◽  
Toshihisa Kajiwara
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Viscoelastic Fluid ◽  
Shear Thickening ◽  
Profile Method ◽  
Fluid Elasticity ◽  
Simulation Based ◽  
Dilute Suspensions ◽  
Smoothed Profile Method

We investigate previously unclarified effects of fluid elasticity on shear-thickening in dilute suspensions in an Oldroyd-B viscoelastic fluid using a novel direct numerical simulation based on the smoothed profile method.

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