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DTSTART;TZID=Europe/Stockholm:20230627T170000
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UID:submissions.pasc-conference.org_PASC23_sess143_msa258@linklings.com
SUMMARY:Direct Numerical Simulation of a Rotor at Re=10000 and Analysis of
  Acoustic Sources
DESCRIPTION:Minisymposium\n\nRonith Stanly (KTH Royal Institute of Technol
 ogy); Eman Bagheri (Friedrich-Alexander-Universität Erlangen-Nürnberg); Ad
 am Peplinski (KTH Royal Institute of Technology); Antonio Memmolo (CINECA)
 ; Stefan Becker (Friedrich-Alexander-Universität Erlangen-Nürnberg); and P
 hilipp Schlatter (KTH Royal Institute of Technology, Friedrich-Alexander-U
 niversität Erlangen-Nürnberg)\n\n<em></em>This presentation describes the 
 work that was performed as part of the Centre of Excellence Excellerat Pha
 se 1, where a Direct Numerical Simulation (DNS) of a relatively complex fo
 ur-bladed rotor at a tip-Reynolds number of 10000 was performed. The empha
 sis is on the workflows necessary for high-order simulations of industrial
 ly relevant configurations. The simulation is based on the spectral elemen
 t solver, Nek5000 which ensures high fidelity of the arising flow structur
 es throughout the domain. An initial hexahedral coarse mesh is constructed
  using Gmsh, which is then refined using an automatic Adaptive Mesh Refine
 ment (AMR) strategy. We will describe the workflow that was adopted to per
 form these simulations, and show selected statistics of the case, both in 
 the transient and stationary regime. In a second part, we will show work t
 owards using these incompressible data to extract the acoustic sources, an
 d subsequently make predictions of the acoustic noise from the rotor. This
  is achieved by calculating the integral solution of the thickness and loa
 ding terms of the Ffowcs Williams and Hawkings equation. Moreover, we pres
 ent the analysis of acoustic source terms using different Aeroacoustic ana
 logies.\n\nDomain: Engineering\n\nSession Chair: Philipp Schlatter (Friedr
 ich-Alexander-Universität Erlangen-Nürnberg, KTH Royal Institute of Techno
 logy)
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