Parallel adaptive mesh refinement for large eddy simulation using the finite element method

1998 ◽  
pp. 172-181 ◽  
Author(s):  
Darach Golden ◽  
Neil Hurley ◽  
Sean McGrath
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Large Eddy Simulation ◽  
Adaptive Mesh Refinement ◽  
Mesh Refinement ◽  
Adaptive Mesh ◽  
The Finite Element Method ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Element Method

LARGE EDDY SIMULATION OF HYDROELASTIC VIBRATION USING THE FINITE ELEMENT METHOD

2010 ◽  
Vol 24 (24) ◽  
pp. 4683-4706 ◽  
Author(s):  
W. Q. WANG ◽  
L. X. ZHANG ◽  
X. Q. HE ◽  
Y. GUO
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Large Eddy Simulation ◽  
Guide Vane ◽  
The Finite Element Method ◽  
Hydro Turbine ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Hydroelasticity Problem ◽  
Element Method

This work is concerned with modeling the interaction of fluid flow with flexible solid structures. An improving spring smooth analogy and an improved constant volume transfer (ICVT) are used to provide fluid mesh control and transfer the information on the interfaces between fluid and structure, respectively. The time integrating algorithm is based on the predictor multi-corrector algorithm (PMA). An important aspect of this work is that we present a directly coupled approach, in which a large eddy simulation (LES) fluid solver and a structure solver have been coupled together to solve a hydroelasticity problem using the finite element method. To demonstrate the performance of the proposed approach, two working examples were used. One is the vibration of a beam immersed in incompressible fluid, another is the hydroelastic behavior of an ideal guide vane in a hydro turbine passage. The numerical results show the validity of the proposed approach.

Accuracy of large eddy simulation for turbulent flow by the finite element method

1998 ◽  
Vol 212 (7) ◽  
pp. 643-650
Author(s):  
T Uchiyama
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Large Eddy Simulation ◽  
Processing Unit ◽  
The Finite Element Method ◽  
Central Processing ◽  
Eddy Simulation ◽  
Advection Term ◽  
Large Eddy ◽  
Element Method

This paper investigates the computational accuracy and CPU (central processing unit) time of large eddy simulation (LES) for turbulent flows performed by the finite element method. The investigations are accomplished by simulating a fully developed turbulent channel flow, which was analysed by Kim et al. using the direct numerical simulation (DNS) technique. When the advection term is discretized in gradient form, the turbulence decays and disappears with the passage of time. In using a multipass algorithm to solve the velocity field, the numerical result obtained by discretizing the advection term in divergent form agrees very well with that of the DNS. The multipass algorithm with the number of iterations k = 2 and 3 predict almost the same results. Thus, the algorithm with k = 2, allowing calculation with less CPU time, is successfully applicable to LES.

scholarly journals Large Eddy Simulation of Homogeneous Isotropic Turbulent Flow Using the Finite Element Method

2006 ◽  
Vol 49 (1) ◽  
pp. 102-114 ◽  
Author(s):  
Ashraf UDDIN ◽  
Chisachi KATO ◽  
Yoshinobu YAMADE ◽  
Nobuyuki OHSHIMA ◽  
Mamoru TANAHASHI ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Large Eddy Simulation ◽  
Turbulent Flow ◽  
The Finite Element Method ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Isotropic Turbulent Flow ◽  
Element Method
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