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

The recently developed 3-D TenStream radiative transfer solverwas integrated into the University of California, Los Angeles large-eddy simulation (UCLA-LES) cloud-resolving model. This work documentsthe overall performance of the TenStream solver as well as the technicalchallenges of migrating from 1-D schemes to 3-D schemes. In particular theemployed Monte Carlo spectral integration needed to be reexamined inconjunction with 3-D radiative transfer. Despite the fact that the spectralsampling has to be performed uniformly over the whole domain, we find thatthe Monte Carlo spectral integration remains valid. To understand theperformance characteristics of the coupled TenStream solver, we conductedweak as well as strong-scaling experiments. In this context, we investigatetwo matrix preconditioner: geometric algebraic multigridpreconditioning (GAMG) and block Jacobi incomplete LU (ILU) factorizationand find that algebraic multigrid preconditioning performs well for complex scenes andhighly parallelized simulations. The TenStream solver is tested for up to4096 cores and shows a parallel scaling efficiency of80–90 % on various supercomputers. Compared to the widelyemployed 1-D delta-Eddington two-stream solver, the computational costsfor the radiative transfer solver alone increases by a factor of 5–10

3-D radiative transfer in large-eddy simulations – experiences coupling the TenStream solver to the UCLA-LES