### Abstract

CFD simulation of heat transfer and friction factor characteristics in a circular tube fitted with twisted tape inserts in laminar flow and constant heat flux is conducted using FLUENT version 6.3.26. Plain and alternate axis twisted tape inserts with twist ratios (y = 2.93, 3.91, 4.89) and alternative angles (β = 30^{°}, 60^{°}, 90^{°}) have been used for the simulation. The simulated results are matched with the literature correlations for a plain tube with a discrepancy of less than ±8% for Nusselt number and ±6.25% for friction factor. The results also revealed that the heat transfer in terms of the Nusselt number increased with increases of Reynolds number, alternative angles, and decreases of twist ratio. Among the various twist ratios and alternative angles, the twist ratio of y = 2.93 and alternative angle β = 90^{°} offered a maximum heat transfer enhancement.

Original language | English |
---|---|

Pages (from-to) | 384-396 |

Number of pages | 13 |

Journal | Heat Transfer - Asian Research |

Volume | 43 |

Issue number | 4 |

DOIs | |

Publication status | Published - 2014 |

### Fingerprint

### Keywords

- CFD simulation
- FLUENT
- Heat transfer augmentation
- Modified twisted tape
- Twist ratio

### ASJC Scopus subject areas

- Condensed Matter Physics
- Fluid Flow and Transfer Processes

### Cite this

*Heat Transfer - Asian Research*,

*43*(4), 384-396. https://doi.org/10.1002/htj.21089

**CFD simulation of heat transfer augmentation in a circular tube fitted with alternative axis twisted tape in laminar flow under a constant heat flux.** / Salman, Sami D.; Kadhum, Abdul Amir H.; Takriff, Mohd Sobri; Mohamad, Abu Bakar.

Research output: Contribution to journal › Article

*Heat Transfer - Asian Research*, vol. 43, no. 4, pp. 384-396. https://doi.org/10.1002/htj.21089

}

TY - JOUR

T1 - CFD simulation of heat transfer augmentation in a circular tube fitted with alternative axis twisted tape in laminar flow under a constant heat flux

AU - Salman, Sami D.

AU - Kadhum, Abdul Amir H.

AU - Takriff, Mohd Sobri

AU - Mohamad, Abu Bakar

PY - 2014

Y1 - 2014

N2 - CFD simulation of heat transfer and friction factor characteristics in a circular tube fitted with twisted tape inserts in laminar flow and constant heat flux is conducted using FLUENT version 6.3.26. Plain and alternate axis twisted tape inserts with twist ratios (y = 2.93, 3.91, 4.89) and alternative angles (β = 30°, 60°, 90°) have been used for the simulation. The simulated results are matched with the literature correlations for a plain tube with a discrepancy of less than ±8% for Nusselt number and ±6.25% for friction factor. The results also revealed that the heat transfer in terms of the Nusselt number increased with increases of Reynolds number, alternative angles, and decreases of twist ratio. Among the various twist ratios and alternative angles, the twist ratio of y = 2.93 and alternative angle β = 90° offered a maximum heat transfer enhancement.

AB - CFD simulation of heat transfer and friction factor characteristics in a circular tube fitted with twisted tape inserts in laminar flow and constant heat flux is conducted using FLUENT version 6.3.26. Plain and alternate axis twisted tape inserts with twist ratios (y = 2.93, 3.91, 4.89) and alternative angles (β = 30°, 60°, 90°) have been used for the simulation. The simulated results are matched with the literature correlations for a plain tube with a discrepancy of less than ±8% for Nusselt number and ±6.25% for friction factor. The results also revealed that the heat transfer in terms of the Nusselt number increased with increases of Reynolds number, alternative angles, and decreases of twist ratio. Among the various twist ratios and alternative angles, the twist ratio of y = 2.93 and alternative angle β = 90° offered a maximum heat transfer enhancement.

KW - CFD simulation

KW - FLUENT

KW - Heat transfer augmentation

KW - Modified twisted tape

KW - Twist ratio

UR - http://www.scopus.com/inward/record.url?scp=84897487590&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897487590&partnerID=8YFLogxK

U2 - 10.1002/htj.21089

DO - 10.1002/htj.21089

M3 - Article

VL - 43

SP - 384

EP - 396

JO - Heat Transfer - Asian Research

JF - Heat Transfer - Asian Research

SN - 1099-2871

IS - 4

ER -