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, instability of flow due to break of symmetry between sag of the valve body and flow direction was analyzed on the basis of momentum theory in axis symmetric flow field, and characteristics of fluid force acting on the valve body (deviation fluid force to the valve shaft center) are clarified. The analysis result shows that fluid force is proportional to sagging of the valve edge. Till the valve opening is around 60%, the working angle is upward, that means sagging of the valve body is suppressed. When the valve opening is beyond 70%, the working angle is downward, that means sagging of the valve body is increased. Moreover, validity of the analysis result is examined by comparing it with the measurement result in discharge.

HYDRODYNAMIC ANALYSIS ON VIBRATIONS OF THE HOLLOW-JET VALVE