Partially-Averaged Navier-Stokes simulation of turbulent annular Poiseulle flow
Abstract
Turbulent annular Poiseulle flow is commonly encountered in various engineering applications, such as heat exchangers. The effects of the inner wall transverse curvature on the flowfield, characterised by the ratio of inner and outer radii η= Ri/Ro, have been studied previously using Direct Numerical Simulations (DNS). Scale-resolving simulations based on a Reynolds-Averaged Navier Stokes framework offer a potentially cheaper alternative to traditional Large Eddy Simulations (LES); however it is not clear if such models are able to capture the turbulence anisotropy in the turbulent annular pipe flow. In the present study, turbulent annular Poiseulle flow at ReDh = 8900 is performed with the Partially-Averaged Navier Stokes (PANS) model, a variable-resolution turbulence model that is based on the conventional RANS modelling. The ability of the PANS model to capture the effects of the transverse wall curvature is found to be comparable with DNS and other RANS-based scale-resolving approaches despite its relative simplicity and reduced computational cost.
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BibTeX
@misc{yap2026partiallyaveraged,
title = {{Partially-Averaged Navier-Stokes simulation of turbulent annular Poiseulle flow}},
author = {Li-Toong Yap and Marten Klein and Heiko Schmidt},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.18254},
eprint = {2610.18254},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.18254},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Partially-Averaged Navier-Stokes simulation of turbulent annular Poiseulle flow
AU - Li-Toong Yap
AU - Marten Klein
AU - Heiko Schmidt
PY - 2026
DA - 2026/10/13
PB - arXiv
DO - 10.48550/arxiv.2610.18254
UR - https://arxiv.org/abs/2610.18254
AB - Turbulent annular Poiseulle flow is commonly encountered in various engineering applications, such as heat exchangers. The effects of the inner wall transverse curvature on the flowfield, characterised by the ratio of inner and outer radii η= R_i/R_o, have been studied previously using Direct Numerical Simulations (DNS). Scale-resolving simulations based on a Reynolds-Averaged Navier Stokes framework offer a potentially cheaper alternative to traditional Large Eddy Simulations (LES); however it is not clear if such models are able to capture the turbulence anisotropy in the turbulent annular pipe flow. In the present study, turbulent annular Poiseulle flow at Re_D_h = 8900 is performed with the Partially-Averaged Navier Stokes (PANS) model, a variable-resolution turbulence model that is based on the conventional RANS modelling. The ability of the PANS model to capture the effects of the transverse wall curvature is found to be comparable with DNS and other RANS-based scale-resolving approaches despite its relative simplicity and reduced computational cost.
ER -