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TWiki> CfdTm Web>Boundary conditions >TestCase053 (2017-05-19, AllenZhang )

TWiki> CfdTm Web>Boundary conditions >TestCase053 (2017-05-19, AllenZhang )

*Type: Experimental*

*Status*:

In this study, the simulations performed are based on either the 2-equation k-ε model or the two-equation k-ω model.

The radiative heat transfer is calculated by means of the discrete ordinate method. Nowadays, this method represents one of the most used in CFD simulations. In order to optimize the correlation between the method’s correctness and the numerical effort, the number of considered propagation directions has been limited. In the present sutdy, 32 directions are considered to describe the spatial propagation of radiation. The absorption efficiency of the gas phase is described by Modak’s approximation [Mod79]. Conductive heat transfer is not considered.

- dynamic viscosity : %$\mu = 1.6 \times10^{-5} kg.m^{-1}.s^{-1}$%

- density : %$\rho = 1.17861 kg.m^{-3}$%

- specific heat capacity : %$ c_{p} = 1017.24 J.K^{-1}.kg^{-1}$%

- reference pressure : %$ p = 101300Pa$%

- reference temperature : %$ T = 298.15K$%

* Total flowrate: %$2.62609\times10^{-4}kg.s^{-1}$%

* Temperature : %$436 K$%

* Mixing Rate : %$1$%

* Total flowrate: %$4.282\times10^{-3}kg.s^{-1}$%

* Temperature : %$353 K$%

* Mixing Rate : %$0$%

The temperature profile as well as the wall specific radiation emissivities are given as function of the y-coordinate in the following table:

Distance y (m) | Temperature (K) | Emissivity |
---|---|---|

from 0 to 0.09125 | 415 | 0.550 |

from 0.09125 to 0.18250 | 415 | 0.535 |

from 0.18250 to 0.27375 | 426 | 0.560 |

from 0.27375 to 0.36500 | 460 | 0.565 |

from 0.36500 to 0.45625 | 497 | 0.570 |

from 0.45625 to 0.54750 | 541 | 0.575 |

from 0.54750 to 0.63875 | 586 | 0.580 |

from 0.63875 to 2.50000 | 611 | 0.585 |

The lateral faces are defined as symmetric boundary conditions.

Code | Version | Author | Restrictions |
---|---|---|---|

Code_Saturne |
2.0-beta2 |
M. Hassanaly | AccessEDFGroup |

Number of topics: 1

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I | Attachment | Action | Size | Date | Who | Comment |
---|---|---|---|---|---|---|

png | geom.png | manage | 4.0 K | 2010-09-10 - 13:10 | UnknownUser |

Topic revision: r60 - 2017-05-19 - 03:29:30 - AllenZhang

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