15 Jun 2023
 | 15 Jun 2023
Status: this preprint is open for discussion.

BoundaryLayerDynamics.jl v1.0: a modern codebase for atmospheric boundary-layer simulations

Manuel F. Schmid, Marco G. Giometto, Gregory A. Lawrence, and Marc B. Parlange

Abstract. We present BoundaryLayerDynamics.jl, a new code for turbulence-resolving simulations of atmospheric boundary-layer flows as well as canonical turbulent flows in channel geometries. The code performs direct numerical simulation as well as large-eddy simulation using a hybrid (pseudo)spectral and finite-difference approach with explicit time advancement. Written in Julia, the code strives to be flexible and adaptable without sacrificing performance, and extensive automated tests aim to ensure that the implementation is and remains correct. We show that the simulation results are in agreement with published results and that the performance is on par with an existing Fortran implementation of the same methods.

Manuel F. Schmid et al.

Status: open (until 14 Oct 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2023-1071', Zheng Gong, 20 Jun 2023 reply
    • AC1: 'Reply on CC1', Manuel F. Schmid, 20 Jun 2023 reply
  • RC1: 'Comment on egusphere-2023-1071', Michael Schlottke-Lakemper, 02 Jul 2023 reply

Manuel F. Schmid et al.

Manuel F. Schmid et al.


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Short summary
Turbulence-resolving flow models have strict performance requirements, as simulations often run for weeks using hundreds of processes. Many flow scenarios also require the flexibility to modify physical and numerical models for problem-specific requirements. With a new code written in Julia we hope to make such adaptations easier without compromising on performance. In this paper we discuss the modeling approach and present validation and performance results.