News


5th International DualSPHysics Users Workshop


The “5th International DualSPHysics Users Workshop”, will be held at the Universitat Politècnica de Catalunya - BarcelonaTech, in Barcelona (Spain) on 23rd-25th March 2020.

These workshops are designed to be a very informal meeting occasion, ideal for a constructive exchange of ideas, to learn about DualSPHysics and get involved with the project. 

Don’t miss this event, which will include:

- Beta release of new version 5.0 exclusive for workshop participants.

- Keynotes given by developers explaining all these novelties of version 5.0.

- Practical sessions for user and developer levels.

- Presentations by delegates shown strengths and limitations when using DualSPHysics.

More information on: https://dual.sphysics.org/5thusersworkshop/workshop/programme

Release of beta version 5.0 of DualSPHysics package

The new version will include the following novelties:

- Coupling with MoorDyn library (http://www.matt-hall.ca/moordyn.html).

- New functionalities in the coupling with Project Chrono (https://projectchrono.org/).

- New density diffusion term (DDT).

- New rheology models, non-Newtonian formulations and multiphase flows.

- New boundary conditions: Modified Dynamic Boundary Conditions (MDBC).

- New stand-alone wave generation algorithm employing inlet/outlet conditions (WaveInlet).

- Improved documentation: XML_GUIDE for Inlet/Outlet, Chrono, MoorDyn, Rheological.

Practical sessions

Two different practical sessions will be organised the first day:

- Session 1 for users: Running test cases with graphical interface (https://design.sphysics.org/).

- Session 2 for developers: How to modify the source code: which files and functions to edit, compiling and running.

Abstracts for presentation

All delegates are encouraged to submit a 1-page abstract by 13th December 2019 if they wish to present their work. Instructions for abstract submission can be found at: https://dual.sphysics.org/5thusersworkshop/workshop/instructions-for-authors

Journal Special Issue

In addition, contributions of delegates may be selected for possible publication in a special issue of the journal Computational Particle Mechanics (https://link.springer.com/journal/40571), “Latest Developments and Application of SPH using DualSPHysics”.

Registration

The early bird rate (until 20th February 2020) is 230 € (180€ for students), which will include all refreshments during the whole event, lunch and dinner on the 24th March 2020.

Further details on registration fees and procedure can be found at https://dual.sphysics.org/5thusersworkshop/workshop/registration

All the information is available at https://dual.sphysics.org/5thusersworkshop/

 

 

HPC-GFD 2019

The conference will be held in Ourense (Spain) in October 16-17, 2019.

The "HPC for Geophysical Fluid Dynamics 2019" conference aims to present the latest advances in the application of High Performance Computing (HPC) techniques in the development of numerical models for fluid simulations.

Nowadays numerical modeling is a fundamental tool for resource management and risk prevention related with water. It is important to predict the behavior of coastal protection systems against adverse weather events and develop risk maps for flood events. However, these simulations require processing large domains with high resolution, which supposes a high computational cost. For all this, it is imperative that the numerical simulation models use HPC (High Performance Computing) techniques to take advantage of the computational resources offered by the supercomputing centers.

The HPC-GFD 2019 participants will have the opportunity to attend the lectures of international experts in numerical modeling of geophysical fluid dynamics and HPC techniques, as well as developers of reference models in this field. The latest advances in the development of the numerical models IBER, IHFoam and DualSPHysics will be presented.

More information here: https://hpc-gfd2019.uvigo.es/en/

 

New DualSPHysics v4.4

We are pleased to announce that the new package of DualSPHysics (v4.4) will be released in April 2019 and includes:

Coupling with Project Chrono library

  • Collisions between solids (using restitution and friction coefficient)
  • Realistic frictional behavior with a full Coulomb sliding/sticking/rolling model
  • Large variety of mechanical constraints (joints, hinges and springs)
  • Examples can be found in the subfolder examples/chrono

Coupling with wave propagation models

  • Employing the multi-layered piston wavemaker (with SWASH)
  • Relaxation zone technique for wave and current generation
  • Examples can be found in the subfolder examples/wavecoupling

Open boundary conditions: inlet & outlet

  • A time- and/or space-dependent velocity field can be assigned at an open boundary
  • The density at an open boundary can be either predefined (fixed and hydrostatic options available) or varied according to information retrieved from the adjacent fluid
  • The water elevation at an open boundary can be either predefined (fixed and time-dependent options available) or varied according to information retrieved from the adjacent fluid
  • The buffer areas are built to allow dual inlet/outlet behaviour
  • Examples can be found in the subfolder examples/inletoutlet

Wave generation

  • Automatic generation of single and multiple solitary waves
  • Example can be found in examples/main/16_SolitaryWaves

Novelties on post-processing tools

  • The moment about an axis can be now computed using ComputeForces.exe

More help to produce XML input file

  • Several templates are now available in doc/xml_format
  • New and more complete "XML_v4.4_GUIDE.pdf"

Other changes

  • New definition of domain limits (simulationdomain)
  • Numerical gauge during simulation (gauges)
  • Easy way to restrain the motion (DOF) of floating bodies (examples\others\FtRestrictions)