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Title
GAC R&D Center sets record-low vehicle drag coefficient using NVIDIA GPU-accelerated CFD simulation
…d in a new record for lowest drag coefficient. Image courtesy of GAC R&D Center GAC RDC Achieves Record-Breaking Drag Coefficient with GPU-Powered HPC Platform To meet the project requirements for R&D, GAC RDC deployed NVIDIA V100 SXM2 Ten…
Description
GAC R&D Center (GAC Group) deployed NVIDIA V100 SXM2 Tensor Core GPUs on its hybrid cloud HPC platform, using Altair's ultraFluidX CFD software for GPU double-precision computing, to design a new concept car. In less than six months the team completed over 200 transient CFD simulations of vehicle outflow, achieving a simulation drag coefficient of 0.147 (wind tunnel test value 0.146 at Tongji University's Shanghai Automotive Wind Tunnel Center), a new record versus the previous 0.19. Compared to conventional CFD approaches, manual modeling effort was reduced by nearly 60% and total simulation time was shortened by about 70%.
…ficient with GPU-Powered HPC Platform To meet the project requirements for R&D, GAC RDC deployed NVIDIA V100 SXM2 Tensor Core GPUs on its heterogeneous hybrid cloud platform for high performance computing, each featuring 5,120 CUDA® cores. With a double precision floating-point compu…
Company
Guangzhou Automobile Group Co., Ltd. (GAC Group)
…ud platform to achieve record low drag coefficient on a new concept car design. Customer Guangzhou Automobile Group Co., Ltd. (GAC Group) Partner Altair ultraFluidX Use Case Computational Fluid Dynamics (CFD) Simulati…
Country
China
…D) Simulation Technology NVIDIA V100 SXM2 GPUs Achieving Global Competitiveness GAC R&D Center (GAC RDC), established in 2006, is a wholly owned subsidiary of Guangzhou Automobile Group Co., Ltd. (GAC). It’s GAC Group’s technology management department and R&D system hub for new pr…
Region
Asia Pacific
…GAC R&D Center (GAC RDC), established in 2006, is a wholly owned subsidiary of Guangzhou Automobile Group Co., Ltd. (GAC). It’s GAC Group’s technology management department and R&D system hub for new p…
Industry
Automotive
…and demonstrate its technological capabilities and future-proof design ability, GAC proposed a new concept car at Auto Guangzhou–responsible for the R&D work of this vision–and set an important objective to c…
Problem
GAC R&D Center needed to decide which CFD simulation technology to use to design a new concept car with a record-low drag coefficient. Conventional CFD approaches using multi-core CPU HPC clusters demanded high CPU core counts, presented high energy consumption and maintenance costs, and required higher grid quality, complex pre-processing, and heavy manual investment. Larger-scale grids and transient simulation needed for high-precision results also sharply increased computing resource consumption.
…such as high energy consumption and high maintenance cost to use the clusters. CFD software based on conventional approaches often demands higher grid quality, complex pre-processing, and heavy investment in manual processes, which leads to difficult autonomous implementation. To obtain high-precision simulation results, larger-scale grids and transient s…
Solution
GAC R&D Center deployed NVIDIA V100 SXM2 Tensor Core GPUs on its heterogeneous hybrid cloud HPC platform, adopting Altair's ultraFluidX CFD software built on GPU double-precision computing. In less than six months, the team completed over 200 transient CFD simulations of the vehicle outflow field.
…ion CFD grids (particles), and the simulation calculation takes about 10 hours. The GAC RDC aerodynamics team adopted the Altair ultraFluidX CFD software based on GPU double-precision computing technology with NVIDIA V100 computing resources. In less than six months, the team completed over 200 transient CFD simulations…
Business value
The simulation achieved a drag coefficient of 0.147, matching a wind tunnel test value of 0.146 at Tongji University's Shanghai Automotive Wind Tunnel Center, setting a new record versus the previous 0.19. Compared to conventional CFD approaches, manual modeling effort was reduced by nearly 60% and total simulation time was shortened by about 70%.
…as 0.146 (per the Shanghai Automotive Wind Tunnel Center of Tongji University), setting a new record on lowest drag coefficient with impressive results over the previous record of 0.19. Compared to the transient CFD simulation based on conventional approaches, the…
Technology
NVIDIA V100 SXM2 Tensor Core GPUs, Altair ultraFluidX
…rtner Altair ultraFluidX Use Case Computational Fluid Dynamics (CFD) Simulation Technology NVIDIA V100 SXM2 GPUs Achieving Global Competitiveness GAC R&D Center (GAC RDC), established in 2006,…
Deployment model
hybrid
…ficient with GPU-Powered HPC Platform To meet the project requirements for R&D, GAC RDC deployed NVIDIA V100 SXM2 Tensor Core GPUs on its heterogeneous hybrid cloud platform for high performance computing, each featuring 5,120 CUDA® cores. With a double…
Deployment options
cloud, On-premise, hybrid
…ficient with GPU-Powered HPC Platform To meet the project requirements for R&D, GAC RDC deployed NVIDIA V100 SXM2 Tensor Core GPUs on its heterogeneous hybrid cloud platform for high performance computing, each featuring 5,120 CUDA® cores. With a double…
AI capabilities
Digital Twins & Simulation
…r is Guangzhou Automobile Group’s technology management department and R&D hub. GAC R&D Center built a transient simulation of automobile outflow field that resulted in a new record for lowest drag coefficient. Image courtesy of GAC R&D Center GAC RDC Achieves Record-Breaking Drag Coeffici…
