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 urban storm sewer pipe systems, manhole covers have been often blown away by a high pressure of compressed air in manholes, which is caused by a flow transition from open-channel to pressurized flow due to flow regulations (e. g., a gate closure at a pumping station in the downstream end of the pipe systems) during a heavy rain. In order to examine the efficiency of counter-measures to mitigate the occurrence of such a blowing phenomenon, a runoff simulation model of surcharged flow with masses of air in sewer pipe systems must be developed. First, a runoff simulation model of pressurized flow with masses of air at manholes is proposed, and the applicability of the model is investigated by applying the model to runoff experiments using a hydraulic model of sewer pipes. Second, the mechanism of blowing of a manhole cover is investigated through runoff experiments in the hydraulic model.

A SIMULATION MODEL AND RUNOFF EXPERIMENTS OF SURCHARGED FLOW WITH MASSES OF AIR AT MANHOLES IN SEWER PIPE SYSTEMS