### Abstract

The effect of nanoparticles on unsteady natural convection in a square enclosure filled with a fluid-saturated porous medium have been investigated numerically. The top and bottom horizontal walls of enclosure are considered adiabatic, while the vertical walls are kept at constant temperatures. The mathematical model consists in a set of partial differential equations along with the corresponding boundary conditions and these equations were solved numerically using a Finite Difference (FD) scheme consisting of the Alternating Direction Implicit (ADI) method and the Tri- Diagonal Matrix Algorithm (TDMA). It is found that significant effect of adding the nanoparticles in enhancing the steady heat transfer were obtained at low Rayleigh number. Steady heat transfer enhancement are greater compared to unsteady heat transfer enhancement.

Original language | English |
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Title of host publication | 2014 UKM FST Postgraduate Colloquium - Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2014 Postgraduate Colloquium |

Editors | Zahari Ibrahim, Haja Maideen Kader Maideen, Nazlina Ibrahim, Nurul Huda Abd Karim, Taufik Yusof, Fatimah Abdul Razak, Nurulkamal Maseran, Rozida Mohd Khalid, Noor Baa'yah Ibrahim, Hasidah Mohd. Sidek, Mohd Salmi Md Noorani, Norbert Simon |

Publisher | American Institute of Physics Inc. |

Pages | 823-826 |

Number of pages | 4 |

ISBN (Electronic) | 9780735412507 |

DOIs | |

Publication status | Published - 1 Jan 2014 |

Event | 2014 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2014 - Selangor, Malaysia Duration: 9 Apr 2014 → 11 Apr 2014 |

### Publication series

Name | AIP Conference Proceedings |
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Volume | 1614 |

ISSN (Print) | 0094-243X |

ISSN (Electronic) | 1551-7616 |

### Other

Other | 2014 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2014 |
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Country | Malaysia |

City | Selangor |

Period | 9/4/14 → 11/4/14 |

### Fingerprint

### Keywords

- Darcy's law
- Nanofluids
- Natural convection

### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*2014 UKM FST Postgraduate Colloquium - Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2014 Postgraduate Colloquium*(pp. 823-826). (AIP Conference Proceedings; Vol. 1614). American Institute of Physics Inc.. https://doi.org/10.1063/1.4895308

**Natural convection in a porous enclosure filled with nanofluids.** / Alhashash, Abeer; Saleh, Habibis; Hashim, Ishak.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*2014 UKM FST Postgraduate Colloquium - Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2014 Postgraduate Colloquium.*AIP Conference Proceedings, vol. 1614, American Institute of Physics Inc., pp. 823-826, 2014 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2014, Selangor, Malaysia, 9/4/14. https://doi.org/10.1063/1.4895308

}

TY - GEN

T1 - Natural convection in a porous enclosure filled with nanofluids

AU - Alhashash, Abeer

AU - Saleh, Habibis

AU - Hashim, Ishak

PY - 2014/1/1

Y1 - 2014/1/1

N2 - The effect of nanoparticles on unsteady natural convection in a square enclosure filled with a fluid-saturated porous medium have been investigated numerically. The top and bottom horizontal walls of enclosure are considered adiabatic, while the vertical walls are kept at constant temperatures. The mathematical model consists in a set of partial differential equations along with the corresponding boundary conditions and these equations were solved numerically using a Finite Difference (FD) scheme consisting of the Alternating Direction Implicit (ADI) method and the Tri- Diagonal Matrix Algorithm (TDMA). It is found that significant effect of adding the nanoparticles in enhancing the steady heat transfer were obtained at low Rayleigh number. Steady heat transfer enhancement are greater compared to unsteady heat transfer enhancement.

AB - The effect of nanoparticles on unsteady natural convection in a square enclosure filled with a fluid-saturated porous medium have been investigated numerically. The top and bottom horizontal walls of enclosure are considered adiabatic, while the vertical walls are kept at constant temperatures. The mathematical model consists in a set of partial differential equations along with the corresponding boundary conditions and these equations were solved numerically using a Finite Difference (FD) scheme consisting of the Alternating Direction Implicit (ADI) method and the Tri- Diagonal Matrix Algorithm (TDMA). It is found that significant effect of adding the nanoparticles in enhancing the steady heat transfer were obtained at low Rayleigh number. Steady heat transfer enhancement are greater compared to unsteady heat transfer enhancement.

KW - Darcy's law

KW - Nanofluids

KW - Natural convection

UR - http://www.scopus.com/inward/record.url?scp=85063844064&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063844064&partnerID=8YFLogxK

U2 - 10.1063/1.4895308

DO - 10.1063/1.4895308

M3 - Conference contribution

AN - SCOPUS:85063844064

T3 - AIP Conference Proceedings

SP - 823

EP - 826

BT - 2014 UKM FST Postgraduate Colloquium - Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2014 Postgraduate Colloquium

A2 - Ibrahim, Zahari

A2 - Maideen, Haja Maideen Kader

A2 - Ibrahim, Nazlina

A2 - Karim, Nurul Huda Abd

A2 - Yusof, Taufik

A2 - Razak, Fatimah Abdul

A2 - Maseran, Nurulkamal

A2 - Khalid, Rozida Mohd

A2 - Ibrahim, Noor Baa'yah

A2 - Sidek, Hasidah Mohd.

A2 - Noorani, Mohd Salmi Md

A2 - Simon, Norbert

PB - American Institute of Physics Inc.

ER -