English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this paper a novel low-storage method for time-resolved databases ispresented. This approach reduces the storage cost of time-resolved databases bystoring filtered flow fields that target the large and intermediate scales,while retaining all the information needed to fully reconstruct the flow at thelevel of filtered flow fields and complete second-order statistics. This isdone by storing also the filtered turbulent stresses, allowing to recover theexact effect of the small scales on the large and intermediate scales. Asignificant speed-up of the computations is achieved, first, by relaxing thenumerical resolution, which is shown to affect only the dynamics close to thewall, but not the large scales stored in the database, and, second, byexploiting the \change{computing power and efficiency} of GPU co-processorsusing a new high-resolution hybrid CUDA-MPI code. This speed-up allows runningfor physically meaningful times to capture the dynamics of the large scales.The resulting temporally resolved large-scale database of a turbulent channelflow up to $Re_\tau=5300$, in large boxes for long times, is brieflyintroduced, showing significant indicators of large-scale dynamics withcharacteristic times of the order of up to eight eddy turnover times.

A low-storage method consistent with second-order statistics for time-resolved databases of turbulent channel flow up to $Re_\tau=5300$