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April 15, 2026The KSFM Journal of Fluid Machinery

A Performance Comparison of x86 and Arm on OpenFOAM for Computational Fluid Dynamics

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Authors

SLSangeun LeeSKSeokmin KimYKYoung-Seok Kang

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Overview

Empirical comparison evaluates computational efficiency in fluid dynamics using x86 and Arm architectures, suggesting Arm as a viable alternative.

Key Points

  • The aim is to compare the performance of x86 and Arm CPU architectures in computational fluid dynamics applications.
  • Configured single workstation environments for both x86 and Arm architectures.
  • Utilized OpenFOAM for numerical analysis in fluid dynamics.
  • Conducted tests on incompressible and compressible flow using specified core counts.
  • Arm architecture showed a 14% reduction in computation time for incompressible flow on coarse mesh and 24% on fine mesh.
  • For compressible flow, Arm had a 12% reduction on coarse mesh and 21% on fine mesh.
  • Overall, Arm demonstrated better core scalability and power efficiency compared to x86.

Cite This Study

Lee et al. (2026) studied this question.

synapsesocial.com/papers/69df2a99e4eeef8a2a6af9achttps://doi.org/10.5293/kfma.2026.29.2.025
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