Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface
The unsteady stagnation point flow of hybrid nanofluid past an impermeable disk is investigated with the presence of thermal radiation. The pair of aluminium oxide and copper with 2% of φhnf are numerically analyzed using the existing correlations of hybrid nanofluid. The governing model is simpl...
| Main Authors: | , , |
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| Format: | Article |
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Elsevier B.V.
2022
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| Online Access: | http://psasir.upm.edu.my/id/eprint/102544/ |
| _version_ | 1848863825547231232 |
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| author | Khashi’ie, Najiyah Safwa Md Arifin, Norihan Pop, Ioan |
| author_facet | Khashi’ie, Najiyah Safwa Md Arifin, Norihan Pop, Ioan |
| author_sort | Khashi’ie, Najiyah Safwa |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The unsteady stagnation point flow of hybrid nanofluid past an impermeable disk is investigated
with the presence of thermal radiation. The pair of aluminium oxide and copper with 2% of φhnf
are numerically analyzed using the existing correlations of hybrid nanofluid. The governing
model is simplified into a set of differential (similarity) equations and then, numerically solved by
employing the bvp4c solver in the Matlab software. The dual solutions are presented while the
stability analysis certifies the physical/real solution. The availability of dual solutions is detected
when the range of control parameters are 1.5 ≤ B ≤ 1 (unsteadiness decelerating parameter),
0 ≤ R ≤ 0.1 (radiation parameter) and λc ≤ λ ≤ 0.5 (velocity ratio parameter). The accession of
radiation parameter and the use of different nanofluids (Cu-H2O, Al2O3-H2O and Cu-Al2O3/H2O)
are not prolonging the boundary layer separation. However, the addition of R, B and the use of
Cu-Al2O3/H2O hybrid nanofluid enhance the thermal performance of the working fluid. |
| first_indexed | 2025-11-15T13:39:04Z |
| format | Article |
| id | upm-102544 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:39:04Z |
| publishDate | 2022 |
| publisher | Elsevier B.V. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1025442024-03-21T08:06:09Z http://psasir.upm.edu.my/id/eprint/102544/ Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface Khashi’ie, Najiyah Safwa Md Arifin, Norihan Pop, Ioan The unsteady stagnation point flow of hybrid nanofluid past an impermeable disk is investigated with the presence of thermal radiation. The pair of aluminium oxide and copper with 2% of φhnf are numerically analyzed using the existing correlations of hybrid nanofluid. The governing model is simplified into a set of differential (similarity) equations and then, numerically solved by employing the bvp4c solver in the Matlab software. The dual solutions are presented while the stability analysis certifies the physical/real solution. The availability of dual solutions is detected when the range of control parameters are 1.5 ≤ B ≤ 1 (unsteadiness decelerating parameter), 0 ≤ R ≤ 0.1 (radiation parameter) and λc ≤ λ ≤ 0.5 (velocity ratio parameter). The accession of radiation parameter and the use of different nanofluids (Cu-H2O, Al2O3-H2O and Cu-Al2O3/H2O) are not prolonging the boundary layer separation. However, the addition of R, B and the use of Cu-Al2O3/H2O hybrid nanofluid enhance the thermal performance of the working fluid. Elsevier B.V. 2022-08 Article PeerReviewed Khashi’ie, Najiyah Safwa and Md Arifin, Norihan and Pop, Ioan (2022) Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface. Elsevier, 78. 169 - 179. ISSN 0577-9073; ESSN: 2309-9097 https://www.sciencedirect.com/science/article/pii/S0577907322001551 10.1016/j.cjph.2022.06.003 |
| spellingShingle | Khashi’ie, Najiyah Safwa Md Arifin, Norihan Pop, Ioan Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface |
| title | Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface |
| title_full | Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface |
| title_fullStr | Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface |
| title_full_unstemmed | Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface |
| title_short | Unsteady axisymmetric radiative Cu-Al2O3/H2O flow over a radially stretching/shrinking surface |
| title_sort | unsteady axisymmetric radiative cu-al2o3/h2o flow over a radially stretching/shrinking surface |
| url | http://psasir.upm.edu.my/id/eprint/102544/ http://psasir.upm.edu.my/id/eprint/102544/ http://psasir.upm.edu.my/id/eprint/102544/ |