Flow Science Development Talks


FLOW-3D v12.0 – Modernized interface, streamlined workflows and enhanced accuracy

 John Wendelbo, Flow Science

The recent release of FLOW-3D v12.0 features significant graphical user interface developments that streamline the workflow for engineers to progress from their simulation setup through running models and post-processing results. A modernized interface improves the visibility of key modeling features while removing unnecessary options from the user’s view. Faster setup, fewer places to make mistakes in the model setup, an even more streamlined flow of commands and model accessibility, and enhanced run-time plot monitoring make this release a significant departure from previous versions. Additional solver developments include notable accuracy-enhancing features such as an Immersed Boundary Method for momentum advection and a new two-field temperature model.


Accelerating Simulation Workflows through User Interface Design

John Ditter, Flow Science

As simulation becomes deeply embedded in the product design cycle, the need to improve simulation workflows increases. A number of productivity-enhancing features have been implemented in FLOW-3D’s user interface to improve the workflow. These features, which include runtime simulation monitoring, interactive geometry creation, remote solving, batch post-processing, and active simulation control with global conditions, will be discussed. New features coming soon include a new, high performance scenario results viewer, more efficient handling of raster topography, the HPC version of FLOW-3D CAST, and more plotting features in runtime simulation monitoring.

Solver Developments: FLOW-3D v12.0 and FLOW-3D CAST v5.1

Michael Barkhudarov, Flow Science

FLOW-3D users will see many exciting and far-reaching developments in 2018. Hydraulic applications will benefit from a significant upgrade of the sediment transport model and a new outflow pressure boundary condition, both resulting in more accurate and stable solutions. A new multi-component alloy model will mark a major enhancement of the solidification simulation capabilities in FLOW-3D CAST, opening the doors to predicting microstructure and mechanical properties. A full radiation model, along with the shell generation feature, will enable investment casting modeling. All users will benefit from the addition of general unit systems. The accuracy of the two-fluid solution has been advanced by extending it to a two-temperature approach, while the new Immersed Boundary Method improves the accuracy of the near-wall flow solution. There will be a debut of the HPC version of FLOW-3D CAST, which will be available on the POD cloud service, along with the HPC version of FLOW-3D.


State-of-the-Art Cloud Computing

Gandharv Kashinath, Flow Science and Will Cottay, Penguin Computing

Large models and detailed high-fidelity analyses are pushing the limits of in-house hardware resources. At the same time, engineering firms are running simulations as part of their design cycle more than ever and this is a growing trend. With advantages in hardware accessibility, cost, and ease of use, cloud-based solutions are gaining traction in the field of computer-aided engineering (CAE) and more specifically in computational fluid dynamics (CFD). FLOW-3D, in collaboration with Penguin Computing, is now offered in the cloud where thousands of CPU cores can be used to run either a few large simulations or many smaller ones simultaneously. This talk will focus on FLOW-3D‘s cloud computing platform, its pricing, performance and ease-of-use.

FLOW-3D solver developments

Michael Barkhudarov, Flow Science

Continuing the release schedule that started last year, we are preparing two releases in 2017: FLOW-3D CAST v5.0 and FLOW-3D v12.0. The FLOW-3D CAST release sees an expansion of modeling tools to aid users in the design and evaluation of a casting process. Additions include the output of gas pressure and venting efficiency during filling, and thermal modulus and last places to freeze during solidification. A heat transfer coefficient calculator for conical sprays, based on the spray flow rate, has been added to the spray cooling model. The intensification pressure has been coupled to the air entrainment, void particles and porosity models. Users will now be able to use degrees Centigrade or Fahrenheit with negative values, overcoming a long-standing limitation in FLOW-3D. There will no longer be a requirement to define temperature in absolute units for models that use an equation-of-state, such as air entrainment and radiation heat transfer. A cluster version of the solver will also become available for FLOW-3D CAST this year. The two-fluid flow model in FLOW-3D v12.0 will see the introduction of a full two-temperature solver, enhancing accuracy and flexibility of the treatment of heat and mass exchange at the interface between the fluids. Users will also be able to apply transformations to whole geometry components, simplifying geometry setup for components made of multiple subcomponents. The shallow water model now allows the use of Manning’s coefficient to describe terrain roughness. The user will be able to choose whether to define pressure in gauge or absolute units in FLOW-3D v12.0, even when a model that requires the absolute scale, e.g., adiabatic bubble or compressible fluid, is used.

User interface engineering: Building an intuitive experience

Thomas Jensen, Flow Science

In this talk, we will provide a brief tour of the initiatives we’ve undertaken to make the user interfaces of our FLOW-3D products more intuitive and easier to use, while retaining the flexibility and accessibility you desire. In FLOW-3D CAST v5.0, Process Workspaces have been expanded to several more casting processes. This process workspace approach is designed to simplify and improve users’ workflows. Other significant enhancements will also be introduced, including customizable runtime plots, new databases, and the ability to generate view files for batch postprocessing. Later this year, FLOW-3D v12.0 will incorporate many of the same enhancements included with FLOW-3D CAST v5.0, but will also include “smarter” shallow water mesh blocks, an interface for the chemistry model, and STL checking & repair capabilities. Several new features and improvements to our state-of-the-art visualization tool, FlowSightTM, will also be described.


Latest Developments for FLOW-3DFLOW-3D CASTFLOW-3D/MP, and FlowSight™

Amir Isfahani, Flow Science

This year’s releases include not only major new features, but also significant advances in solver performance as well as performance improvements in user interface graphics in areas like transparency and large raster data sets. The performance of the FSI/TSE model has been increased several fold, and the accuracy of the GMRES pressure solver has been improved through better convergence control. Processing geometry is performed with a higher level of accuracy where the improved FAVOR™ algorithm results in smoother interfaces. Users will also be able to control gaps between components, which are common in complex CAD assemblies, by automatically closing them. The complete overhaul of the particle model in the solver will have an entirely redesigned user interface. Later this year, FLOW-3D v11.2 will have new interactive geometry creation. Units are now displayed for all variables in FLOW-3DFLOW-3D/MP and FLOW-3D CAST. FlowSight has been highly optimized to improve performance in areas like load times and iso-surface creation. FLOW-3D/MP is now in sync with FLOW-3D and a FLOW-3D CAST version is in the works. This high performance computing product is now deployed in the cloud through a cloud workstation that is connected to a farm of thousands of compute nodes for tackling massive simulations or DOEs where the user needs to run many simulations simultaneously. New features in FLOW-3D CAST v4.2 include a spray cooling model for die casting that takes into account the robotically-controlled motion of the spray nozzles. In v4.2, a new concept of Process Workspace is introduced that simplifies the user’s workflow by intelligently setting up the defaults for a particular process and bringing the relevant features/models to the forefront. Users can then queue up simulations for different stages of a process in order to model it from start to finish. The user interface of FLOW-3D CAST is shaping up to be the best metal casting modeling tool in the industry.

FLOW-3D solver: Developments and improvements

Michael Barkhudarov, Flow Science

This year’s releases include not only major new features, but also significant advances in solver performance and accuracy of processing geometry. The improved FAVOR™ algorithm results in smoother interfaces with fluid and more accurate flow and thermal solutions. Users will be able to control gaps between components, which are common in complex CAD assemblies, by automatically closing them. New features include a spray cooling model for die casting, that takes into account the robotically-controlled motion of the spray nozzles, the dynamic droplet calculation for two-phase flows, and the ability to conform mesh blocks to arbitrary shapes independent of the solid geometry. The Lagrangian particles model rewrite has been completed with all its new capabilities available in the 11.2 release later this year. Performance of the FSI/TSE model has been increased several fold, and the accuracy of the GMRES pressure solver has been improved through better control of convergence.