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

A method of predicting the Hazen-Williams roughness coefficient from knowledge of equivalent sand-grain roughness is presented. An equation resulting from combining the Hazen-Williams, Darcy-Weisbach, and Colebrook-White equations is used as the basis of the relationship. This equation in turn is used as the theoretical foundation for correlating existing experimental data for sandgrain roughness and Hazen-Williams coefficient. Previously developed methods have not incorporated such data. The result is a correlation that shows very good agreement between accepted and predicted values, providing an improved means by which conversion of sand-grain roughness to Hazen-Williams coefficient can be accomplished where values for one or the other are not readily available.

Improved Method for Converting Equivalent Sand-grain Roughness to Hazen-Williams Coefficient