Correlações empíricas de placa plana

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Given the fluid flow conditions, the dimensionless numbers (Reynolds and Prandtl), as well as the surface and fluid temperatures and the length of the flat plate that is in contact with the fluid, calculates, through empirical correlations, the thickness of the boundary layer (δ and δt), the Nusselt number and the drag coefficient $C_{f,x}$

Number | Condition |
---|---|

1 | Laminate |

2 | Turbulent |

Number | Condition |
---|---|

1 | Laminar, local |

2 | Laminar, medium |

3 | Turbulent, local, $Re_x \leq 10^8$ |

4 | Turbulent, medium, $Re_{x,c} = 5\cdot 10^5$, $Re_L \leq 10^8$ |

Number | Condition |
---|---|

1 | Laminar, local, $Pr \geq 0.6$ |

2 | Laminar, medium, $Pr \geq 0.6$ |

3 | Turbulent, local, $Re_L \leq 10^8$, $0.6 \leq Pr \leq 60$ |

4 | Turbulent, medium, $Re_{x,c} = 5\cdot 10^5$, $Re_L \leq 10^8$, $0.6 \leq Pr \leq 60$ |

All correlations are evaluated at film temperature.

Given the fluid flow conditions, the dimensionless numbers (Reynolds and Prandtl), as well as the surface and fluid temperatures and the length of the flat plate that is in contact with the fluid, calculates, through empirical correlations, the thickness of the boundary layer (δ and δt), the Nusselt number and the drag coefficient $C_{f,x}$

Number | Condition |
---|---|

1 | Laminate |

2 | Turbulent |

Number | Condition |
---|---|

1 | Laminar, local |

2 | Laminar, medium |

3 | Turbulent, local, $Re_x \leq 10^8$ |

4 | Turbulent, medium, $Re_{x,c} = 5\cdot 10^5$, $Re_L \leq 10^8$ |

Number | Condition |
---|---|

1 | Laminar, local, $Pr \geq 0.6$ |

2 | Laminar, medium, $Pr \geq 0.6$ |

3 | Turbulent, local, $Re_L \leq 10^8$, $0.6 \leq Pr \leq 60$ |

4 | Turbulent, medium, $Re_{x,c} = 5\cdot 10^5$, $Re_L \leq 10^8$, $0.6 \leq Pr \leq 60$ |

All correlations are evaluated at film temperature.

- WELTY, James R.; RORRER, Gregory L.; FOSTER, David G. Fundamentos de Transferência de Momento, de Calor e de Massa, 6ª edição. Grupo GEN, 2017.