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</o:shapelayout></xml><![endif]--></head><body lang=SL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal>Vabimo vas na 7. predavanje iz sklopa "Kolokviji na IJS" v letu 2013/14, ki bo <strong><span style='color:red'>v sredo, 15. januarja 2014, ob 13. uri </span></strong><span style='color:red'>v Veliki predavalnici Instituta »Jožef Stefan«</span> na Jamovi cesti 39 v Ljubljani. Napovednik predavanja najdete tudi na naslovu <a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a>, posnetke preteklih predavanj<span style='color:blue'> </span>pa na <a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a>. <o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<o:p></o:p></p><p class=MsoNormal><b>prof. dr. Gregor Veble<o:p></o:p></b></p><p class=MsoNormal><i>Pipistrel d.o.o., Ajdovščina in Univerza v Novi Gorici</i><b><span style='font-size:14.0pt'><o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:14.0pt'>Metode za optimizacijo aerodinamičnih površin<o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal>Predstavili bomo metode za optimizacijo aerodinamičnih površin, ki so bile razvite na podjetju Pipistrel. S temi metodami je bila zasnovana aerodinamika letala Taurus G4, ki je l. 2011 osvojilo nagrado NASA Green Flight Challenge sponsored by Google, pa tudi letala Panthera ter aerodinamičnega kolesa Eivie. S primernim zapisom optimizacijskega kriterija in parametrizacijo površine je mogoče zasnovati optimalne oblike kril, propelerjev, krilnih profilov ter trupov, pa tudi detajlov kot so prehod med krilom in trupom. Osredotočili se bomo predvsem na dve metodi. S prvo je mogoče najti optimalno obliko krila, ki ne leži v ravnini (npr. krilni zavihki) in kjer se izkaže, da ima prehod optimalnosti od ravninske proti neravninski obliki kritično točko glede na parameter, ki določa razmerje med profilnim in induciranim uporom. Z drugo metodo je z uporabo modela idealne tekočine ter optimizacijskega kriterija, ki počiva na porazdelitvi tlaka po površini, mogoče najti tridimenzionalne oblike, ki stremijo k čim bolj laminarnemu obtekanju ter preprečujejo odcep toka, kar oboje znižuje upor.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'>Predavanje bo v slovenščini.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><strong><span style='font-family:"Calibri","sans-serif";color:red'>Lepo vabljeni!</span></strong><strong><span style='font-weight:normal'><o:p></o:p></span></strong></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></body></html>