Doctorat en Enginyeria Tèrmica: Enviaments recents
Ara es mostren els items 1-12 de 84
-
Assessment of LES models for a fully developed windturbine array boundary layer
(Begell House, 2023)
Text en actes de congrés
Accés restringit per acord de confidencialitatDirect numerical simulations of the incompressible Navier-Stokes equations at high Reynolds numbers are not yet feasible, so dynamically less complex mathematical formulations such as Large Eddy Simulation (LES) have been ... -
Strategies for increasing the arithmetic intensity on ensemble averaged parallel-in-time simulations
(Parallel Computational Fluid Dynamics (ParCFD), 2023)
Text en actes de congrés
Accés restringit per acord de confidencialitatExtracting flow statistics from flow simulations requires generally long in- tegration intervals in which a good deal of the time is spent time-averaging the results. In order to avoid this, ensemble averaging can be applied ... -
Combustion and air flows simulations of an industrial kiln for sanitary ware manufacture
(Begell House, 2023)
Comunicació de congrés
Accés restringit per política de l'editorialThe implementation of green hydrogen as fuel in industrial kilns, such as those required in ceramic ware manufacturing processes, would be a disruptive milestone in the decarbonization process of the energyintensive industry. ... -
Reliable overnight industrial LES: challenges and limitations. Application to CSP technologies
(European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
Text en actes de congrés
Accés obertPreserving the operators’ symmetries at the discrete level is crucial to enable reliable DNS and LES simulations of turbulent flows. Moreover, real-world applications demand robust and stable numerical methods suitable for ... -
On a conservative solution to checkerboarding: examining the causes of non-physical pressure modes
(European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
Text en actes de congrés
Accés obertIn computational fluid dynamics (CFD), the checkerboard problem remains a challenging issue when employing collocated grid arrangements for complex geometries. It manifests as oscillatory and non-physical pressure modes, ... -
On a high-order energy-preserving unconditionally stable discretization on collocated unstructured grids
(European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
Text en actes de congrés
Accés obertIn this work, an energy-preserving unconditionally stable fractional step method on collocated unstructured grids is presented. Its formulation is based on preserving the underlying symmetries of the differential operators. ... -
Robust and reliable DNS and LES on unstructured grids
(European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
Text en actes de congrés
Accés obertPreserving the operators symmetries at discrete level is the key aspect to enable reliable DNS and LES simulations of turbulent flows. On the other hand, realworld applications demand robust and stable numerical methods ... -
Numerical assessment of parcel modeling in large eddy simulation for dispersed multiphase flows
(2023)
Text en actes de congrés
Accés obertThe particle-laden turbulent flow benchmark case of a confined jet by Hishida (1987) was selected for validation purposes of the Eulerian-Lagrangian method in Large Eddy Simulation (LES). After validation, a particle size ... -
Pressure-velocity coupling on unstructured collocated grids: reconciling stability and energy-conservation
(Begell House, 2023)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work, an energy-preserving unconditionally stable fractional step method on collocated unstructured grids is presented. Its formulation is based on preserving the underlying symmetries of the differential operators. ... -
An Energy-preserving unconditionally stable fractional step method for DNS/LES on collocated unstructured grids
(Springer, 2022)
Text en actes de congrés
Accés restringit per política de l'editorialA finite-volume discretization over unstructured meshes is the most used formulation to solve Navier-Stokes equations by many general purpose CFD packages codes such as OpenFOAM or ANSYS-Fluent. -
On a conservative solution to checkerboarding: examining the discrete Laplacian kernel using mesh connectivity
(Springer, 2022)
Text en actes de congrés
Accés restringit per política de l'editorialCFD codes that are used for industrial applications commonly use a collocated grid arrangement to calculate the physical flow variables. When using a central differencing gradient (CDG) to discretise the continuous operators ... -
On the large-eddy simulation of a fully developed wind-turbine array boundary layer
(European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
Comunicació de congrés
Accés obertDirect numerical simulations of the incompressible Navier-Stokes equations at high Reynolds numbers are not yet feasible, so dynamically less complex mathematical formulations such as Large Eddy Simulation (LES) have been ...