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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We provide an elementary derivation of an orthogonal coordinate system forboundary layers around evolving smooth surfaces and curves based on thesigned-distance function. We go beyond previous works on the signed-distancefunction and collate useful vector calculus identities for these coordinates.These results and provided code enable consistent accounting of geometriceffects in the derivation of boundary layer asymptotics for a wide range ofphysical systems.

Orthogonal signed-distance coordinates and vector calculus near evolving curves and surfaces