### Abstract

An attempt is made for simultaneous, but independent control of skin friction reduction and heat transfer enhancement in a turbulent channel flow. First, a mathematical relation is derived of the contribution of turbulent heat flux to the Nusselt number. Two different thermal boundary conditions are considered: (1) isothermal condition, where two walls are kept at constant, but different temperatures; (2) isoflux condition, where both walls are heated at a given wall heat flux. By utilizing the difference between the derived relation and the similar relation for the skin friction (Fukagata et al., 2002), a strategy for the simultaneous control is proposed. The effects of the control strategy are examined by means of direct numerical simulation.

Original language | English |
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Pages | 307-312 |

Number of pages | 6 |

Publication status | Published - 2005 Dec 1 |

Externally published | Yes |

Event | 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 - Williamsburg, VA, United States Duration: 2005 Jun 27 → 2005 Jun 29 |

### Other

Other | 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 |
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Country | United States |

City | Williamsburg, VA |

Period | 05/6/27 → 05/6/29 |

### ASJC Scopus subject areas

- Fluid Flow and Transfer Processes

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## Cite this

*Novel turbulence control strategy for simultaneously achieving friction drag reduction and heat transfer augmentation*. 307-312. Paper presented at 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4, Williamsburg, VA, United States.