CUDA Acceleration of ACuSolve, A FEM-based Commercial CFD Solver

In this white paper, we present the innovative commercial GPU-based Computational Fluid Dynamics (CFD) solver Altair ultraFluidX. This work features simulations of the DrivAer model, a generic, publicly available vehicle geometry that was developed by the Chair of Aerodynamics and Fluid Mechanics at the Technical University of Munich and which is widely used for testing and validation purposes. The DrivAer model features rear end, underbody designs, and underhood flow. This model was then used to perform both wind tunnel tests and numerical simulations of the 40% scale open cooling geometry using perforated aluminum sheets with different opening ratios to mimic different radiator properties. Within, we will compare some of the results from these wind tunnel tests with numerical results obtained with Altair ultraFluidX.

Traction-based, patented NuVinci® transmission is a continuously variable planetary (CVP) technology enabling performance and efficiency improvements for machines that use an engine, pump, motor, or geared transmission systems. Fallbrook Technologies has been working on improving oil flow inside the NuVinci products as it affects the transmission’s efficiency, durability, power, capacity, and cost. Altair worked with Amazon Web Services (AWS), a secure cloud services platform, to provide an integrated solution to Fallbrook including advanced GPU hardware, high-performance computing (HPC) and the nanoFluidX software through industry-leading workload management and job scheduler Altair PBS Professional™.

Photorealistic rendering has become a cornerstone for architectural visualization. Altair’s developers have collaborated with NVIDIA to leverage NVIDIA OptiX™ denoising technology to maximize the speed-up without compromising quality for both exterior and interior rendering scenes. We'll walk through some of the most recent benchmarks of Altair Thea Render™, showing performance gain on NVIDIA RTX hardware.