BEGIN:VCALENDAR
VERSION:2.0
PRODID:Linklings LLC
BEGIN:VTIMEZONE
TZID:Europe/Stockholm
X-LIC-LOCATION:Europe/Stockholm
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700308T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701101T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20230831T095746Z
LOCATION:Davos
DTSTART;TZID=Europe/Stockholm:20230627T101600
DTEND;TZID=Europe/Stockholm:20230627T101800
UID:submissions.pasc-conference.org_PASC23_sess110_pos161@linklings.com
SUMMARY:P45 - Optimization of Non-Conventional Airfoils for Martian Rotorc
 raft with Direct Numerical Simulations Using High-Performance Computing
DESCRIPTION:Poster\n\nLidia Caros, Oliver Buxton, and Peter Vincent (Imper
 ial College London)\n\nDesign of rotorcraft for Mars is challenging due to
  the very low density and low speed of sound compared to Earth. These cond
 itions require Martian rotor blades to operate in a low-Reynolds-number (1
 ,000 to 10,000 based on chord) compressible flow regime, atypical of conve
 ntional, terrestrial helicopters. Non-conventional airfoils with sharp lea
 ding edges and flat surfaces show improved performance in such conditions 
 by inducing an unsteady lift mechanism which operates in a compressible tr
 ansitional/turbulent regime. To optimize these unconventional Martian airf
 oils, evolutionary algorithms have previously been used. However, they typ
 ically require many cost-function evaluations. For this reason, second-ord
 er Reynolds-Averaged Navier-Stokes (RANS)/ unsteady RANS (URANS) solvers h
 ave typically been used because of their relatively low computational cost
 . However, these solvers can have limited predictive capability when the f
 low is unsteady and/or transitional. The current work overcomes this limit
 ation by optimizing with high-order accurate direct numerical simulations 
 (DNS) using the compressible flow solver in PyFR (www.pyfr.org). This is m
 ade possible due to the capabilities of PyFR and the resources allocated t
 o this project on the Piz Daint supercomputer.\n\nSession Chair: Jibonanan
 da Sanyal (National Renewable Energy Laboratory)
END:VEVENT
END:VCALENDAR