Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Jansen, Kenneth E."'
Autor:
Balin, Riccardo, Simini, Filippo, Simpson, Cooper, Shao, Andrew, Rigazzi, Alessandro, Ellis, Matthew, Becker, Stephen, Doostan, Alireza, Evans, John A., Jansen, Kenneth E.
Recent years have seen many successful applications of machine learning (ML) to facilitate fluid dynamic computations. As simulations grow, generating new training datasets for traditional offline learning creates I/O and storage bottlenecks. Additio
Externí odkaz:
http://arxiv.org/abs/2306.12900
Direct numerical simulation (DNS) of a turbulent boundary layer over the Gaussian (Boeing) bump is performed. This boundary layer exhibits a series of adverse and favorable pressure gradients and convex and concave curvature effects before separating
Externí odkaz:
http://arxiv.org/abs/2306.05972
We present a new approach for constructing data-driven subgrid stress models for large eddy simulation of turbulent flows using anisotropic grids. The key to our approach is a Galilean, rotationally, reflectionally and unit invariant model form that
Externí odkaz:
http://arxiv.org/abs/2212.00332
Structural subgrid stress models for large eddy simulation often allow for backscatter of energy from unresolved to resolved turbulent scales, but excessive model backscatter can eventually result in numerical instability. A commonly employed strateg
Externí odkaz:
http://arxiv.org/abs/2201.09122
We present a new approach for constructing data-driven subgrid stress models for large eddy simulation of turbulent flows. The key to our approach is representation of model input and output tensors in the filtered strain rate eigenframe. Provided in
Externí odkaz:
http://arxiv.org/abs/2106.13410
Publikováno v:
In Computer Methods in Applied Mechanics and Engineering 15 March 2024 422
Autor:
Balin, Riccardo, Jansen, Kenneth E.
The turbulent boundary layer over a Gaussian shaped bump is computed by direct numerical simulation (DNS) of the incompressible Navier-Stokes equations. The two-dimensional bump causes a series of strong pressure gradients alternating in rapid succes
Externí odkaz:
http://arxiv.org/abs/2010.08577
The turbulent boundary layer over a flat plate is computed by direct numerical simulation (DNS) of the incompressible Navier-Stokes equations as a test bed for a synthetic turbulence generator (STG) inflow boundary condition. The inlet momentum thick
Externí odkaz:
http://arxiv.org/abs/2010.04277
In the context of high performance finite element analysis, the cost of iteratively modifying a computational domain via re-meshing and restarting the analysis becomes time prohibitive as the size of simulations increases. In this paper, we demonstra
Externí odkaz:
http://arxiv.org/abs/2005.00202
Despite their well-known limitations, RANS models remain the most commonly employed tool for modeling turbulent flows in engineering practice. RANS models are predicated on the solution of the RANS equations, but these equations involve an unclosed t
Externí odkaz:
http://arxiv.org/abs/2004.08865