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NUMA-Aware strategies for the efficient execution of CFD simulations on CPU supercomputers
(2021)
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The growing variety of computing architectures and the hybridization of high-performance computing systems encourage the research for portable implementations of numerical methods in simulation codes. However, the pursuit ...
A highly portable heterogeneous implementation of a Poisson solver for flows with one periodic direction
(2021)
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The portability of codes has become a major advantage given the continuous development of new architectures for numerical applications, as well as the progressive incorporation of accelerators in modern supercomputers. ...
NUMA-Aware Strategies for the Heterogeneous Execution of SPMV on Modern Supercomputers
(2021)
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The sparse matrix-vector product is a widespread operation amongst the scientific computing community. It represents the dominant computational cost in many large-scale simulations relying on iterative methods, and its ...
Comparison of Sliding Mesh and Immersed Boundary Methods in Unsteady Simulations
(2021)
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The feasibility and accuracy of two methods for simulating moving bodies inside a fluid are studied. Different cases are presented using the Immersed Boundary Method and the Sliding Mesh technique. The results obtained by ...
On a Proper Tensorial Subgrid Heat Flux Model
(2021)
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In this work, we aim to shed light to the following research question: can we find a nonlinear tensorial subgrid-scale (SGS) heat flux model with good physical and numerical properties, such that we can obtain satisfactory ...
Assessment of LES techniques for mitigating the Grey Area in DDES models
(2019)
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The slow RANS-LES transition is a well-known shortcoming in hybrid turbulence models such as DelayedDetached Eddy Simulation (DDES). The present work assesses the feasibility of 2D sensitive LES models for naturally ...
Investigating the capabilities of CFD-based data-driven models for indoor environmental design and control
(International Centre for Numerical Methods in Engineering (CIMNE), 2021)
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In this work, we study the accuracy of CFD-based data-driven models, which predict comfort-related flow parameters in a ventilated cavity with a heated floor. We compare the computational cost and accuracy of three different ...
Subgrid-Scale Model Based on the Invariants of the Gradient Model Tensor
(2021)
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The incompressible Navier-Stokes equations stand as the best mathematical model for turbulent flows. However, direct numerical simulations at high Reynolds numbers are not yet feasible because the convective term produces ...
On the Feasibility of CFD for Transient Air Flow Simulations in Buildings
(2019)
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The rapidly growing computational capacity hasmade CFD simulations an attractive tool for indoorenvironmental applications. The ability of CFD toperform transient simulations could be incorporatedinto model predictive ...
Proper SGS heat flux models and numerical methods for LES
(2021)
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In this work, we aim to shed light to the following research question: can we find a nonlinear tensorial subgrid-scale (SGS) heat flux model with good physical and numerical properties, such that we can obtain satisfactory ...