### Abstract

Natural convection heat transfer in a rotating, differentially heated enclosure is studied numerically in this paper. The rotating enclosure is filled with water-Ag, water-Cu, water-Al_{2}O_{3}, or water-TiO _{2} nanofluids. The governing equations are in velocity, pressure, and temperature formulation and solved using the staggered grid arrangement together with MAC method. The governing parameters considered are the solid volume fraction, 0. 0 ≤ φ ≤ 0. 05, and the rotational speeds, 3. 5 ≤ Ω ≤ 17. 5 rpm, and the centrifugal force is smaller than the Coriolis force and both forces were kept below the buoyancy force. It is found that the angular locations of the local maximums heat transfer were sensitive to rotational speeds and nanoparticles concentration. The global quantity of heat transfer rate increases about 1.5%, 1.1%, 0.8%, and 0.6% by increasing 1% φ of the nanoparticles Ag, Cu, Al_{2}O_{3}, and TiO_{2}, respectively, for the considered rotational speeds.

Original language | English |
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Article number | 874132 |

Journal | Advances in Mathematical Physics |

Volume | 2014 |

DOIs | |

Publication status | Published - 2014 |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)
- Applied Mathematics

### Cite this

**Numerical analysis of nanofluids in differentially heated enclosure undergoing orthogonal rotation.** / Saleh, H.; Hashim, I.

Research output: Contribution to journal › Article

}

TY - JOUR

T1 - Numerical analysis of nanofluids in differentially heated enclosure undergoing orthogonal rotation

AU - Saleh, H.

AU - Hashim, I.

PY - 2014

Y1 - 2014

N2 - Natural convection heat transfer in a rotating, differentially heated enclosure is studied numerically in this paper. The rotating enclosure is filled with water-Ag, water-Cu, water-Al2O3, or water-TiO 2 nanofluids. The governing equations are in velocity, pressure, and temperature formulation and solved using the staggered grid arrangement together with MAC method. The governing parameters considered are the solid volume fraction, 0. 0 ≤ φ ≤ 0. 05, and the rotational speeds, 3. 5 ≤ Ω ≤ 17. 5 rpm, and the centrifugal force is smaller than the Coriolis force and both forces were kept below the buoyancy force. It is found that the angular locations of the local maximums heat transfer were sensitive to rotational speeds and nanoparticles concentration. The global quantity of heat transfer rate increases about 1.5%, 1.1%, 0.8%, and 0.6% by increasing 1% φ of the nanoparticles Ag, Cu, Al2O3, and TiO2, respectively, for the considered rotational speeds.

AB - Natural convection heat transfer in a rotating, differentially heated enclosure is studied numerically in this paper. The rotating enclosure is filled with water-Ag, water-Cu, water-Al2O3, or water-TiO 2 nanofluids. The governing equations are in velocity, pressure, and temperature formulation and solved using the staggered grid arrangement together with MAC method. The governing parameters considered are the solid volume fraction, 0. 0 ≤ φ ≤ 0. 05, and the rotational speeds, 3. 5 ≤ Ω ≤ 17. 5 rpm, and the centrifugal force is smaller than the Coriolis force and both forces were kept below the buoyancy force. It is found that the angular locations of the local maximums heat transfer were sensitive to rotational speeds and nanoparticles concentration. The global quantity of heat transfer rate increases about 1.5%, 1.1%, 0.8%, and 0.6% by increasing 1% φ of the nanoparticles Ag, Cu, Al2O3, and TiO2, respectively, for the considered rotational speeds.

UR - http://www.scopus.com/inward/record.url?scp=84900002901&partnerID=8YFLogxK

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U2 - 10.1155/2014/874132

DO - 10.1155/2014/874132

M3 - Article

VL - 2014

JO - Advances in Mathematical Physics

JF - Advances in Mathematical Physics

SN - 1687-9120

M1 - 874132

ER -