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AcuSolve New Features

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What's new in AcuSolve 2019? Watch the video to see what's new in the most recent release of AcuSolve.

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View all HyperWorks 2019 New Features See all the HyperWorks new features available in this release. Go to the New Features Page
Altair AcuSolve™ brings a new radiation model, two new functions to improve user workflow and new Altair HyperMesh™ based tutorials. In addition, Parasolid geometry compatibility between AcuConsole, Altair Inspire™ and HyperMesh has been improved.

Discrete Ordinate Radiation Model

While the previously released P1 radiation model reduces the radiative transfer equation to a single partial differential equation, the Discrete Ordinate model computes radiation for a user-selected finite number of ordinate directions. Despite an increased computational time, having more specified ordinate directions, a much higher accuracy is attained compared with P1 model results. Fully coupled with the flow solver, the new model allows for zero absorptivity of participating media. A view factor calculation is not necessary, thus the restriction of no mesh motion with radiation no longer applies.

Discrete Ordinate Model calculates the transport of specular rays

Automatic Wall Treatment

Automatic Wall treatment has been implemented in the solver to greatly reduce the user’s workload when setting up a simulation. This feature processes the model and automatically handles specification of internal and external wall boundaries, moving and stationary surfaces, along with interface surfaces. Surface pairs for interactions are automatically generated.

Example of autogenerated surface interfaces for an interaction of seat and air within a car cabin

Thermal Shell Command

Thermal Shells are frequently used in AcuSolve simulations to efficiently model conduction through geometrically thin solids. Previously a manual function, v2019 now has a command to auto-generate thermal shells from within the input deck whilst retaining the same flexibility to create shell elements of varying layers and composition without manual selection in the model. In addition, because thermal shells are created at runtime, a model is always available in its pre-shell state.

Improvements to Level Set Multiphase

Immiscible multiphase simulation results provide a sharper interface definition through the Backward Forward Error Compensation and Correction (BFECC) approach.

Enhancements over earlier functions include:

  • Improved handling of high aspect ratio elements

  • More accurate interaction with wall surfaces

  • Maintaining high accuracy at higher CFL numbers

BFECC approach improves the accuracy of the multiphase solution

Tutorial Additions

Three new tutorials have been added for Dispersed Multiphase, Humidity and P1 Radiation. All three tutorials are HyperMesh based.

Fifteen tutorials, previously offered only via the AcuConsole interface, are now available based on the HyperMesh workflow.

AcuFieldView

Photorealistic rendering and workflow have been significantly enhanced within AcuFieldView. With six new Backgrounds, along with many common materials added as textures to the library, import of UltraFluidX files into the post-processor, the performance of batch mode rendering has also been improved.

CFD simulation post-processing using new backdrops and materials for rendering in AcuFieldView

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