Mixed convection characteristics of ethylene glycol and water mixture based Al2O3 Nanofluids

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ÖĞÜT E., KAHVECİ K.

Proceedings of the 2nd World Congress on Mechanical, Chemical, and Material Engineering, MCM 2016, Budapest, Macaristan, 22 - 23 Ağustos 2016, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.11159/htff16.116
  • Basıldığı Şehir: Budapest
  • Basıldığı Ülke: Macaristan
  • Anahtar Kelimeler: Ethylene glycol, Mixed convection, Nanofluid, Square enclosure, Water
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Trakya Üniversitesi Adresli: Evet

Özet

Mixed convection of ethylene glycol (EG) and water mixture based Al2O3 nanofluids in a lid-driven square enclosure heated from the left wall and cooled from the top wall was investigated numerically in this study. The Grashof number was kept at a constant value of 104. Reynolds number was assumed to vary in a range so that the Richardson number gets values in the range of 0.1 to 10. Three different nanoparticle volume fractions were considered: 0%, 4% and 8%. Six different volume ratios of EG to water were taken into consideration, 0:100 %, 20:80 %, 40:60%, 60:40%, 80:20% and 100:0%. The results show that an increase in the average Nusselt number is seen with an increase in the volume fraction of nanoparticles and with a decrease in the Richardson number. The results also show that average Nuselt number shows a considerable increase with an increase of EG volume fraction in the base fluid.