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

Three dimensional flow separation occurring in a vaneless diffuser at small flow rates was analyzed by using the numerical simulation with the low Reynolds-number turbulence model (LRN k-e) as well as the momentum integral method (MI). Comparison between the LRN k-e calculation and the experiment indicates quite a good agreement in the 3-D boundary layer velocity profile. The numerical investigation shows that the LRN k-ecalculation can predict the reverse flow in the vaneless diffuser, while the MI-method behaves relatively poor although it captures the overall flow pattern correctly. It is clarified that a small gradient in the inlet tangential velocity distribution with respect to the diffuser depth is the key factor which dominates the reverse flow behavior in the vaneless diffuser at small flow rates, as demonstrated in the experiment.

Computational Analysis of 3-D Turbulent Flow Separation in a Vaneless Diffuser (Comparison between Numerical Analysis and Momentum Integral Method)