The Effect of Turbulence Model and Nanofluid on Fluid Flow and Heat Transfer in a Narrow Rectangular Duct

Edaviye Sare AKBAY; Berkay DERELİ; Oğuz TURGUT

doi:https://doi.org/10.2339/politeknik.589390

Makale detayları

The Effect of Turbulence Model and Nanofluid on Fluid Flow and Heat Transfer in a Narrow Rectangular Duct

Yazarlar:

Edaviye Sare AKBAY | Berkay DERELİ | Oğuz TURGUT

Yayıncı:

Gazi University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Journal of Polytechnic 2020 Vol.23 Issue 2, pp.567-579

Belge Tipi:

Makale

Yayın Tarihi:

5/2020

Belge Dili:

İngilizce

Document ID (Org No.):

2000589767

Sıklık:

Aylık

eISSN:

2147-9429

DOI:

https://doi.org/10.2339/politeknik.589390

Özet:

 


The effect of turbulence model and nanofluid
on the heat transfer and fluid flow in a horizontal narrow rectangular duct is numerically
studied under constant wall heat flux boundary condition. Numerical study is
carried out using ANSYS Fluent 17.0 software. Examined parameters are the type
of turbulence model, the type of nanofluid, the volume fraction of nanofluid,
and the Reynolds number. Three different k-e
and four different k-w turbulence
models are employed. Aluminum oxide Al2O3-water and
copper oxide CuO-water are used as nanofluids. Volume fractions of
nanoparticles used are 0%, 0.1%, 0.5%, 1%, 2% and 4%. Reynolds number changes from
3×103 to 50×103. Results showed that k-ω standard turbulence model with low Reynolds number
correction gives better result. It is seen that both the type and volume
fraction of nanofluid affect heat transfer and pressure drop. Using Al2O3
and CuO nanoparticles in water increases thermal performance. It is found that
the performance of CuO-water nanofluid is better than that of Al2O3-water
nanofluid. It is seen that using turbulent fully developed correlations derived
for circular ducts may end up with incorrect results for the flow in a two
dimensional rectangular duct.



.

 

The
effect of type of turbulence model and nanofluid on the heat transfer and fluid
flow in a horizontal narrow rectangular duct is numerically studied under
constant wall heat flux boundary condition. Numerical study is carried out
using ANSYS Fluent 17.0 software. Examined parameters are the type of
turbulence model, the type of nanofluid, the volume fraction of nanoparticle in
nanofluid, and the Reynolds number. Three different k-e and
four different k-w turbulence models are employed. Aluminum oxide
Al2O3-water and copper oxide CuO-water are used as
nanofluids. Volume fractions of nanoparticles used are 0%, 0.1%, 0.5%, 1%, 2%
and 4%. Reynolds number changes from 3×103 to 50×103.
Results showed that k-ω standard turbulence model with low Reynolds number
correction gives better result. It is seen that both the type and the volume
fraction of nanoparticle in nanofluid affect heat transfer and pressure drop.
Using Al2O3 and CuO nanoparticles in water increases
thermal performance. It is found that the performance factor of CuO-water
nanofluid is better than that of Al2O3-water nanofluid.
It is seen that using turbulent fully developed flow correlations derived for
circular ducts may end up with incorrect results for the flow in two-dimensional
rectangular duct.

Makale detayları

The Effect of Turbulence Model and Nanofluid on Fluid Flow and Heat Transfer in a Narrow Rectangular Duct

Yazarlar: Edaviye Sare AKBAY | Berkay DERELİ | Oğuz TURGUT

Yayıncı: Gazi University

Ana Başlıklar: Uygulamalı fizik

Dergi: Journal of Polytechnic 2020 Vol.23 Issue 2, pp.567-579

Belge Tipi: Makale

Yayın Tarihi: 5/2020

Belge Dili: İngilizce

Document ID (Org No.): 2000589767

Sıklık: Aylık

eISSN: 2147-9429

DOI: https://doi.org/10.2339/politeknik.589390

Sayı

Yazarlar:

Edaviye Sare AKBAY | Berkay DERELİ | Oğuz TURGUT

Yayıncı:

Gazi University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Journal of Polytechnic 2020 Vol.23 Issue 2, pp.567-579

Belge Tipi:

Makale

Yayın Tarihi:

5/2020

Belge Dili:

İngilizce

Document ID (Org No.):

2000589767

Sıklık:

Aylık

eISSN:

2147-9429

DOI:

https://doi.org/10.2339/politeknik.589390