Dassault Systèmes is pleased to announce the release of SIMULIA PowerFLOW 6-2019 Refresh 4 (R4), which is available for download on the DSx.Client Care & Order system. PowerFLOW 5-2019 Refresh 4 has been available since November 12, 2019, but requires a hotfix release to resolve a few issues which are summarized below. This release, PowerFLOW 5-2019 R4-HF01, will be available for download starting December 20, 2019.
Refresh 4 features an enhancement to the Realistic Wind or Upstream Turbulence inlet condition, which enables users to assess the impact of upstream turbulent conditions on wind noise. This enhancement uses a new Upstream Turbulence Calibration Variant to create the upstream turbulence conditions, calibrated to have low amplitude of undesirable pressure waves. The calibrated inlet, written as a transient surface measurement, is imported into the wind noise simulation using the new Import Face Measurement in PowerCASE.
PowerFLOW now supports Transient Boundary Seeding (TBS), where a transient surface measurement on an arbitrary surface in an upstream simulation can be imported into a downstream simulation and used as an inlet. TBS is very useful for rear vehicle optimization studies where only the rear portion of the vehicle needs to be simulated.
In addition, particle modeling has been enhanced to support arbitrary time varying wind velocity, specified in body fixed or ground fixed reference frames, making it possible to simulate rain on accelerating or deaccelerating vehicles in crosswind or yawed conditions.
PowerCASE now includes the new Sound Absorbing Material capability to calculate Acoustic Porous Media (APM) model parameters for sound-absorbing materials (e.g. fiber mats, foams, or acoustic liners) from experimental data provided by suppliers for the acoustics absorption coefficient as a function of frequency.
A number of new features have been introduced in PowerVIZ. Design Margins Visualization is very useful to visualize whether PowerTHERM parts approach or exceed their specified design limits. The new Background Image option in PowerVIZ can be used to display an image of the model behind a graph. Additional controls for frequency bands have been introduced in the PowerVIZ viewer and Scalar Property Sets (SPS).
Finally, PowerFLOW Release 5-2019 R4-HF01 includes functionality to specify a proxy server for the Engine Cooling Module (ECM) to connect to the SIMULIA Cloud. A PowerFLOW performance issue has also been addressed, along with a number of critical bug fixes for the Upstream Turbulence Calibration Variant and Coarse Variant. Each of these improvements are also in PowerFLOW 6-2019 R4.