NUMERICAL INVESTIGATION OF COMBINED EFFECT OF NANOFLUIDS AND MULTIPLE IMPINGING JETS ON HEAT TRANSFER
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Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Vinca Inst Nuclear Sci
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The present study is focused on numerical investigation of heat enhancement and fluid-flow from a heated surface by using nanofluids with three impinging jets. Effects of different volume ratio, different heat flux and different types of nanofluids (CuO-water, Al2O3-water, Cu-water, TiO-water, and pure water) on heat transfer and fluid-flow were studied numerically. The CuO-water nanofluid was used as a coolant in the other parameter. Three impinging jets were used to cool the surface. Low Reynolds number k-epsilon turbulent model of PHONEICS CFD code was used for numerical analysis. It is obtained that increasing volume ratio from phi=2% to 8% causes an increase of 10.4% on average Nusselt number. Increasing heat flux six times has not a significant effect on average Nusselt number. Using Cu-water nanofluid causes an increase of 2.2%, 5.1%, 4.6%, and 9.6% on average Nusselt number with respect to CuO-water, TiO-water, Al2O3-water, and pure water.
Açıklama
Anahtar Kelimeler
heat transfer, nanofluid, volume ratio, impinging jet
Kaynak
Thermal Science
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
23
Sayı
5
