Show all publications

Pans simulations - low versus high Reynolds number approach

AuthorsKlapwijk, M., Lloyd, T., Vaz, G., Lopes, Terwisga, T.
Conference/JournalVIII International Conference on Computational Methods in Marine Engineering (MARINE 2019), Gothenburg, Sweden
Date13 May 2019

Different approaches for specifying the ratio of modelled-to-total dissipation (fε) in the PANS model, based on the k−ω SST model, are evaluated for different ratios of the modelled-to-total kinetic energy, fk. Based on theoretical reasoning it is argued that applying fε = a· fk should have little effect, and that fε = fk is not expected to improve the results. This is confirmed by applying the approaches to a turbulent channel flow at Reτ =395 and 180, and comparing the results to the often used ‘highReynolds number’ approach (fε =1.0). Reducing fε leads to a reduction in range of scales in the flow; dissipation is allowed at larger scales and therefore smaller scales are suppressed.


Contact person photo

Thomas Lloyd

Specialist, Noise and Vibrations

Tom van Terwisga

Team leader Resistance and Propulsion

You will need an account to view this content

To view this content you will need a login account. If you already have an account you can sign in below. If you want an account then you can create one.

cfdcfd developmentcfd/simulation/desk studiesrefresco