Vortex Methods for Direct Numerical Simulation of Three-Dimensional Bluff Body Flows: Application to the Sphere at Re=300, 500, and 1000

2002 ◽  
Vol 178 (2) ◽  
pp. 427-463 ◽  
Author(s):  
P. Ploumhans ◽  
G.S. Winckelmans ◽  
J.K. Salmon ◽  
A. Leonard ◽  
M.S. Warren
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Bluff Body ◽  
Three Dimensional ◽  
Vortex Methods ◽  
Bluff Body Flows

DIRECT NUMERICAL SIMULATION OF BLUFF BODY FLOWS USING NON-STAGGERED GRIDS

2000 ◽  
Vol 178 (1) ◽  
pp. 157-183
Author(s):  
S. QlAN ◽  
K. OKADA ◽  
Y. NAGASE ◽  
H. UEDA
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Bluff Body ◽  
Staggered Grids ◽  
Bluff Body Flows

Direct Numerical Simulation of Drops in Three Dimensional Viscoelastic Simple Shear Flows

2001 ◽  
Author(s):  
Shriram B. Pillapakkam ◽  
Pushpendra Singh
Keyword(s):  
Numerical Simulation ◽  
Shear Flow ◽  
Direct Numerical Simulation ◽  
Viscoelastic Fluid ◽  
Simple Shear ◽  
Polymer Concentration ◽  
Three Dimensional ◽  
Simple Shear Flow ◽  
Splitting Technique

Abstract A three dimensional finite element scheme for Direct Numerical Simulation (DNS) of viscoelastic two phase flows is implemented. The scheme uses the Level Set Method to track the interface and the Marchuk-Yanenko operator splitting technique to decouple the difficulties associated with the governing equations. Using this numerical scheme, the shape of Newtonian drops in a simple shear flow of viscoelastic fluid and vice versa are analyzed as a function of Capillary number, Deborah number and polymer concentration. The viscoelastic fluid is modeled via the Oldroyd-B model. The role of viscoelastic stresses in deformation of a drop subjected to simple shear flow and its effect on the steady state shape is analyzed. Our results compare favorably with existing experimental data and also help in understanding the role of viscoelastic stresses in drop deformation.

Three-dimensional direct numerical simulation of flow induced by an oscillating sphere close to a plane boundary

2021 ◽  
Vol 33 (9) ◽  
pp. 097106
Author(s):  
Samayam Satish ◽  
Justin S. Leontini ◽  
Richard Manasseh ◽  
S. A. Sannasiraj ◽  
V. Sundar
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Three Dimensional ◽  
Plane Boundary ◽  
Oscillating Sphere
Sign in / Sign up

Export Citation Format

Share Document