Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet
The study scrutinizes the coupled effects of thermal stratification and mixed convection on boundary layer flow and heat transfer of a hybrid Cu-Al2O3/water nanofluid. Stretching/shrinking surface is permeable to allow the wall fluid suction while thermal convection is also included to deal with th...
Saved in:
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Academy of Sciences Malaysia
2019
|
Online Access: | http://psasir.upm.edu.my/id/eprint/81374/1/NANO.pdf http://psasir.upm.edu.my/id/eprint/81374/ https://www.akademisains.gov.my/asmsj/article/mixed-convective-stagnation-point-flow-of-a-thermally-stratified-hybrid-cu-al2o3-water-nanofluid-over-a-permeable-stretching-shrinking-sheet/ |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.upm.eprints.81374 |
---|---|
record_format |
eprints |
spelling |
my.upm.eprints.813742021-06-13T01:51:56Z http://psasir.upm.edu.my/id/eprint/81374/ Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet Khashi'ie, Najiyah Safwa Md Arifin, Norihan Hafidzuddin, Mohd Ezad Hafidz Wahi, Nadihah Pop, Ioan The study scrutinizes the coupled effects of thermal stratification and mixed convection on boundary layer flow and heat transfer of a hybrid Cu-Al2O3/water nanofluid. Stretching/shrinking surface is permeable to allow the wall fluid suction while thermal convection is also included to deal with the thermal stratification phenomenon. In the present work, the combination of copper (Cu) nanoparticles and Al2O3/water nanofluid is modelled using the analytical hybrid nanofluid model. A similarity transformation is adopted to reduce the governing model into a set of ordinary (similarity) differential equations. The efficient boundary value problem with fourth order accuracy (bvp4c) solver in MATLAB software is utilized to solve the transformed model. An astonishing result is obtained where the heat transfer rate of hybrid nanofluid intensifies when small suction parameter is imposed on the stretching/shrinking sheet while a contrary result is obtained when higher value of suction is applied. Suction and opposing buoyancy parameters are among the control parameters that induce the existence of second solution. Stability analysis affirms that the first solution is mathematically stable. The present results are conclusive to the combination of alumina and copper nanoparticles only and other combination of nanoparticles may produce different flow and heat transfer characteristics Academy of Sciences Malaysia 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/81374/1/NANO.pdf Khashi'ie, Najiyah Safwa and Md Arifin, Norihan and Hafidzuddin, Mohd Ezad Hafidz and Wahi, Nadihah and Pop, Ioan (2019) Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet. ASM Science Journal, 12 (5 spec.). pp. 17-25. ISSN 1823-6782 https://www.akademisains.gov.my/asmsj/article/mixed-convective-stagnation-point-flow-of-a-thermally-stratified-hybrid-cu-al2o3-water-nanofluid-over-a-permeable-stretching-shrinking-sheet/ |
institution |
Universiti Putra Malaysia |
building |
UPM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Putra Malaysia |
content_source |
UPM Institutional Repository |
url_provider |
http://psasir.upm.edu.my/ |
language |
English |
description |
The study scrutinizes the coupled effects of thermal stratification and mixed convection on boundary layer flow and heat transfer of a hybrid Cu-Al2O3/water nanofluid. Stretching/shrinking surface is
permeable to allow the wall fluid suction while thermal convection is also included to deal with the thermal stratification phenomenon. In the present work, the combination of copper (Cu) nanoparticles and Al2O3/water nanofluid is modelled using the analytical hybrid nanofluid model. A similarity transformation is adopted to reduce the governing model into a set of ordinary (similarity) differential equations. The efficient boundary value problem with fourth order accuracy (bvp4c) solver in MATLAB software is utilized to solve the transformed model. An astonishing result is obtained where the heat transfer rate of hybrid nanofluid intensifies when small suction parameter is imposed on the stretching/shrinking sheet while a contrary result is obtained when higher value of suction is applied. Suction and opposing buoyancy parameters are among the control parameters that induce the existence of second solution. Stability analysis affirms that the first solution is mathematically stable. The present results are conclusive to the combination of alumina and copper nanoparticles only and other combination of nanoparticles may produce different flow and heat transfer characteristics |
format |
Article |
author |
Khashi'ie, Najiyah Safwa Md Arifin, Norihan Hafidzuddin, Mohd Ezad Hafidz Wahi, Nadihah Pop, Ioan |
spellingShingle |
Khashi'ie, Najiyah Safwa Md Arifin, Norihan Hafidzuddin, Mohd Ezad Hafidz Wahi, Nadihah Pop, Ioan Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet |
author_facet |
Khashi'ie, Najiyah Safwa Md Arifin, Norihan Hafidzuddin, Mohd Ezad Hafidz Wahi, Nadihah Pop, Ioan |
author_sort |
Khashi'ie, Najiyah Safwa |
title |
Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet |
title_short |
Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet |
title_full |
Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet |
title_fullStr |
Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet |
title_full_unstemmed |
Mixed convective stagnation point flow of a thermally stratified hybrid Cu-Al2O3/water nanofluid over a permeable stretching/shrinking sheet |
title_sort |
mixed convective stagnation point flow of a thermally stratified hybrid cu-al2o3/water nanofluid over a permeable stretching/shrinking sheet |
publisher |
Academy of Sciences Malaysia |
publishDate |
2019 |
url |
http://psasir.upm.edu.my/id/eprint/81374/1/NANO.pdf http://psasir.upm.edu.my/id/eprint/81374/ https://www.akademisains.gov.my/asmsj/article/mixed-convective-stagnation-point-flow-of-a-thermally-stratified-hybrid-cu-al2o3-water-nanofluid-over-a-permeable-stretching-shrinking-sheet/ |
_version_ |
1703962162109612032 |
score |
13.197875 |