年間 4 号発行
ISSN 印刷: 1065-3090
ISSN オンライン: 1940-4336
IF:
0.6
Immediacy Index:
0.6
Eigenfactor:
0.00013
JCI:
0.14
SJR:
0.201
SNIP:
0.313
CiteScore™::
1.2
H-Index:
13
Indexed in
DIRECT NUMERICAL SIMULATION OF TURBULENT CHANNEL FLOW WITH MIXED SPECTRAL-FINITE DIFFERENCE TECHNIQUE
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要約
The flow of a viscous incompressible fluid in a plane channel is simulated numerically with the use of a computational code for numerical integration of the Navier−Stokes equations. The numerical method is based on a mixed spectral-finite difference algorithm. The calculations in the two homogeneous directions (the streamwise and the spanwise) are performed in the Fourier space and second-order finite differences are used in the direction orthogonal to the walls. A turbulent-flow database representing the turbulent statistically steady state of the velocity field through 10 viscous time units is assembled at a nominal friction Reynolds number Reτ = 180. A number of turbulence statistics is computed, showing a good agreement with numerical results in particular obtained by other authors with fully spectral codes.
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Alfonsi Giancarlo, On Direct Numerical Simulation of Turbulent Flows, Applied Mechanics Reviews, 64, 2, 2011. Crossref
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Alfonsi Giancarlo, Ciliberti Stefania A., Mancini Marco, Primavera Leonardo, GPGPU implementation of mixed spectral-finite difference computational code for the numerical integration of the three-dimensional time-dependent incompressible Navier–Stokes equations, Computers & Fluids, 102, 2014. Crossref
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Alfonsi Giancarlo, Numerical Simulations of Wave-Induced Flow Fields around Large-Diameter Surface-Piercing Vertical Circular Cylinder, Computation, 3, 3, 2015. Crossref
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Alfonsi Giancarlo, Ciliberti Stefania, Mancini Marco, Primavera Leonardo, Direct Numerical Simulation of Turbulent Channel Flow on High-Performance GPU Computing System, Computation, 4, 1, 2016. Crossref
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Alfonsi Giancarlo, Lauria Agostino, Primavera Leonardo, Recent Results from Analysis of Flow Structures and Energy Modes Induced by Viscous Wave around a Surface-Piercing Cylinder, Mathematical Problems in Engineering, 2017, 2017. Crossref