New Fluent Experience Makes It Easier and Faster to Simulate CFD

The ANSYS 2019 R1 release of ANSYS Fluent brings the software back to its roots.

When Fluent was first conceived 35 years ago (under the name Tempest), it broke the mold for computational fluid dynamics (CFD) software.

First, it bundled CFD models and solvers into a single lease. Then it packaged these models and solvers into an interactive user interface that made it easier for engineers to change the simulation’s geometry, boundary conditions and post-processing effects.

Simulation mesh of a subsea blowout preventer took 30 minutes to create with minimal inputs (top) vs. Fluent simulation from the early 1980s (bottom). We’ve come a long way.

The New Fluent Experience in ANSYS 2019 R1 follows in the tradition of Tempest. It offers a single-window user experience and tasked-based workflows that make it easier for engineers to simulate more and with less training.

Fluent’s Tasked-Based Workflows Simplify Geometry Meshing and Cleanup

The task-based workflow walks engineers through the meshing of watertight geometry.

Fluent’s tasked-based workflows encapsulate meshing expertise in a simple user interface.

The tools enable engineers to create a good quality mesh with minimal user inputs and meshing knowledge.

In fact, the goal of ANSYS Fluent’s developers is to make CFD meshing so easy that anyone can use it.

Engineers with the ANSYS 2019 R1 version of Fluent can also try a beta version of a fault-tolerant tasked-based workflow. This tool helps engineers mesh dirty geometry that isn’t watertight.

Parallel Meshing Speeds up Development Cycles

Fluent uses distributed parallel processing with an adaptive conformal interface to generate high quality meshes

Generating CFD meshes creates a bottleneck in many development cycles. For some engineers, generating the mesh may take longer than solving the simulation.

The ANSYS 2019 R1 version of Fluent uses parallel processing to speed up the meshing process.

With parallel meshing, engineers can now get fast meshing results without needing an HPC license.

The parallel meshing algorithm optimizes the size, shape and boundary of each slice of the mesh so that each core has an equal amount of work.

The tool also ensures that the boundaries between the mesh slices have good transitions.

Generalized K-Omega Fine Tunes Turbulent Flow Simulations

Generalized k-omega (GEKO) is a new turbulence model that is packaged with the ANSYS 2019 R1 version of Fluent. What sets GEKO apart from other turbulence models is that it can be fine-tuned to specific flows.

GEKO provides parameters that can be adjusted to match the simulation to specific physical effects.

No single turbulence model is suitable for all flow applications. As a result, engineers typically have to choose the best flow model to fit their situation. With GEKO, however, engineers can tailor the turbulence model to work for their application.

Engineers tune GEKO through a series of parameters until the results match the observed physical effects. This way, engineers can maintain the calibration of the model for flat plates and mixing layers while ensuring GEKO suits their needs.

Once the fine-tuning is completed, engineers can scale up the simulation to test new designs and optimizations.

ANSYS Cloud is Easy to Use in Fluent

With the new release, engineers can solve complex Fluent simulations faster — with simplified cloud access to on-demand high-performance computing (HPC).

With ANSYS Cloud, engineers have access to preconfigured HPC resources on the Microsoft Azure Platform.

To submit CFD simulations to the cloud, engineers only have to select the closest data center that meets their privacy needs.

To see the ANSYS Cloud in action for — both Fluent and ANSYS Mechanical — watch the video below.

Demo of the ANSYS Cloud Engineers will notice other improvements to the ANSYS 2019 R1 version of Fluent, including:
  • User-interface themes.
  • Japanese language localization.
  • Fluent and ANSYS Maxwell coupling to simulate induction heating.
  • Solar heating simulation capabilities for headlamps and other devices with transparent faces.

For more on the New Fluent Experience in ANSYS 2019 R1, watch the video below or attend the upcoming webinar. Engineers can also attend seminars on Fast and Efficient Mesh Generation using NEW Fluent Meshing Technologies in Houston, Texas, on Feb. 19 or Ann Arbor, Michigan, Feb. 21.

Highlight video of the ANSYS 2019 R1 version of Fluent.