43 research outputs found
DualSPHysics: from fluid dynamics to multiphysics problems
DualSPHysics is a weakly compressible smoothed particle hydrodynamics (SPH) Navier–Stokes solver initially conceived to deal with coastal engineering problems, especially those related to wave impact with coastal structures. Since the first release back in 2011, DualSPHysics has shown to be robust and accurate for simulating extreme wave events along with a continuous improvement in efficiency thanks to the exploitation of hardware such as graphics processing units for scientific computing or the coupling with wave propagating models such as SWASH and OceanWave3D. Numerous additional functionalities have also been included in the DualSPHysics package over the last few years which allow the simulation of fluid-driven objects. The use of the discrete element method has allowed the solver to simulate the interaction among different bodies (sliding rocks, for example), which provides a unique tool to analyse debris flows. In addition, the recent coupling with other solvers like Project Chrono or MoorDyn has been a milestone in the development of the solver. Project Chrono allows the simulation of articulated structures with joints, hinges, sliders and springs and MoorDyn allows simulating moored structures. Both functionalities make DualSPHysics especially suited for the simulation of offshore energy harvesting devices. Lately, the present state of maturity of the solver goes beyond single-phase simulations, allowing multi-phase simulations with gas–liquid and a combination of Newtonian and non-Newtonian models expanding further the capabilities and range of applications for the DualSPHysics solver. These advances and functionalities make DualSPHysics an advanced meshless solver with emphasis on free-surface flow modelling
Simulation-Based Performance Analysis and Tuning for a Two-Level Directly Connected System
Hardware and software co-design is becoming increasingly important due to complexities in supercomputing architectures. Simulating applications before there is access to the real hardware can assist machine architects in making better design decisions that can optimize application performance. At the same time, the application and runtime can be optimized and tuned beforehand. BigSim is a simulation-based performance prediction framework designed for these purposes. It can be used to perform packet-level network simulations of parallel applications using existing parallel machines. In this paper, we demonstrate the utility of BigSim in analyzing and optimizing parallel application performance for future systems based on the PERCS network. We present simulation studies using benchmarks and real applications expected to run on future supercomputers. Future petascale systems will have more than 100,000 cores, and we present simulations at that scale
State-of-the-art SPH solver DualSPHysics: From fluid dynamics to multiphysics problems
DualSPHysics is a weakly compressible smoothed particle hydrodynamics (SPH)
Navier-Stokes solver initially conceived to deal with coastal engineering
problems, especially those related to wave impact with coastal structures.
Since the first release back in 2011, DualSPHysics has shown to be robust and
accurate for simulating extreme wave events along with a continuous improvement
in efficiency thanks to the exploitation of hardware such as graphics
processing units (GPUs) for scientific computing or the coupling with wave
propagating models such as SWASH and OceanWave3D. Numerous additional
functionalities have also been included in the DualSPHysics package over the
last few years which allow the simulation of fluid-driven objects. The use of
the discrete element method (DEM) has allowed the solver to simulate the
interaction among different bodies (sliding rocks, for example), which provides
a unique tool to analyse debris flows. In addition, the recent coupling with
other solvers like Project Chrono or MoorDyn has been a milestone in the
development of the solver. Project Chrono allows the simulation of articulated
structures with joints, hinges, sliders and springs and MoorDyn allows
simulating moored structures. Both functionalities make DualSPHysics one of the
meshless model world leaders in the simulation of offshore energy harvesting
devices. Lately, the present state of maturity of the solver goes beyond single
phase simulations, allowing multi-phase simulations with gas-liquid and a
combination of Newtonian and non-Newtonian models expanding further the
capabilities and range of applications for the DualSPHysics solver. These
advances and functionalities make DualSPHysics a state-of-the-art meshless
solver with emphasis on free-surface flow modelling.Comment: Comp. Part. Mech. (2021
DualSPHysics: from fluid dynamics to multiphysics problems
DualSPHysics is a weakly compressible smoothed particle hydrodynamics (SPH)
Navier-Stokes solver initially conceived to deal with coastal engineering
problems, especially those related to wave impact with coastal structures.
Since the first release back in 2011, DualSPHysics has shown to be robust and
accurate for simulating extreme wave events along with a continuous improvement
in efficiency thanks to the exploitation of hardware such as graphics
processing units (GPUs) for scientific computing or the coupling with wave
propagating models such as SWASH and OceanWave3D. Numerous additional
functionalities have also been included in the DualSPHysics package over the
last few years which allow the simulation of fluid-driven objects. The use of
the discrete element method (DEM) has allowed the solver to simulate the
interaction among different bodies (sliding rocks, for example), which provides
a unique tool to analyse debris flows. In addition, the recent coupling with
other solvers like Project Chrono or MoorDyn has been a milestone in the
development of the solver. Project Chrono allows the simulation of articulated
structures with joints, hinges, sliders and springs and MoorDyn allows
simulating moored structures. Both functionalities make DualSPHysics one of the
meshless model world leaders in the simulation of offshore energy harvesting
devices. Lately, the present state of maturity of the solver goes beyond single
phase simulations, allowing multi-phase simulations with gas-liquid and a
combination of Newtonian and non-Newtonian models expanding further the
capabilities and range of applications for the DualSPHysics solver. These
advances and functionalities make DualSPHysics a state-of-the-art meshless
solver with emphasis on free-surface flow modelling.Comment: Comp. Part. Mech. (2021
DualSPHysics: from fluid dynamics to multiphysics problems
DualSPHysics is a weakly compressible smoothed particle hydrodynamics (SPH) Navier–Stokes solver initially conceived to deal with coastal engineering problems, especially those related to wave impact with coastal structures. Since the first release back in 2011, DualSPHysics has shown to be robust and accurate for simulating extreme wave events along with a continuous improvement in efficiency thanks to the exploitation of hardware such as graphics processing units for scientific computing or the coupling with wave propagating models such as SWASH and OceanWave3D. Numerous additional functionalities have also been included in the DualSPHysics package over the last few years which allow the simulation of fluid-driven objects. The use of the discrete element method has allowed the solver to simulate the interaction among different bodies (sliding rocks, for example), which provides a unique tool to analyse debris flows. In addition, the recent coupling with other solvers like Project Chrono or MoorDyn has been a milestone in the development of the solver. Project Chrono allows the simulation of articulated structures with joints, hinges, sliders and springs and MoorDyn allows simulating moored structures. Both functionalities make DualSPHysics especially suited for the simulation of offshore energy harvesting devices. Lately, the present state of maturity of the solver goes beyond single-phase simulations, allowing multi-phase simulations with gas–liquid and a combination of Newtonian and non-Newtonian models expanding further the capabilities and range of applications for the DualSPHysics solver. These advances and functionalities make DualSPHysics an advanced meshless solver with emphasis on free-surface flow modelling.Ministerio de Ciencia, InnovaciĂłn y Universidades | Ref. IJCI-2017-32592Ministerio de EconomĂa, Industria y Competitividad | Ref. ENE2016-75074-C2-1-RXunta de Galicia | Ref. ED431C 2017/6