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

Global: Zendy Plus monthly

The thickness noise predicted by the Ffowcs Williams and Hawkings(FW&H) equation depends on the normal velocity  which is very sensitiveto the meshing size. Isom showed that in far field a monopolar source isequivalent to a dipolar source induced by a uniform distribution of theload on the entire moving surface. The main objective of this paper isto determine a specific expression of Isom's thickness noise in time andfrequency domains for subsonic fans. The scope of the proposed expressionof Isom's thickness noise is to define a benchmark test of consistency forthickness and loading noise codes in both time and frequency domains forsubsonic fans when using the free field solution of FW&H's equation

A Consistency Test of Thickness and Loading Noise Codes Using Ffowcs Williams and Hawkings Equation