### Abstract

Language | English |
---|---|

Pages | 1101-1107 |

Number of pages | 7 |

Journal | Heat Transfer Engineering |

Volume | 32 |

Issue number | 13-14 |

DOIs | |

Publication status | Published - 13 Oct 2011 |

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### Cite this

*Heat Transfer Engineering*,

*32*(13-14), 1101-1107. https://doi.org/10.1080/01457632.2011.562455

}

*Heat Transfer Engineering*, vol. 32, no. 13-14, pp. 1101-1107. https://doi.org/10.1080/01457632.2011.562455

**Pressure- and temperature-driven flow through triangular and trapezoidal microchannels.** / Ritos, Konstantinos; Lihnaropoulos, Yiannis; Naris, Stergios; Valougeorgis, Dimitris.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Pressure- and temperature-driven flow through triangular and trapezoidal microchannels

AU - Ritos, Konstantinos

AU - Lihnaropoulos, Yiannis

AU - Naris, Stergios

AU - Valougeorgis, Dimitris

PY - 2011/10/13

Y1 - 2011/10/13

N2 - A detailed study of pressure- and temperature-driven flows through long channels of triangular and trapezoidal cross sections is carried out. Due to the imposed pressure and temperature gradients there is a combined gas flow consisting of a thermal creep flow from the cold toward the hot reservoir and a Poiseuille flow from the high- toward the low-pressure reservoir. The formulation is based on the linearized Shakhov model subject to Maxwell boundary conditions, and it is solved numerically using a finite-difference scheme in the physical space and the discrete velocity method in the molecular velocity space. The results are valid in the whole range of the Knudsen number. In addition to the dimensionless flow rates, a methodology is presented to estimate for a certain set of input data the mass flow rates and the pressure distribution along the channel. Finally, special attention is given to the case of zero net mass flow and to the computation of the coefficient of the thermomolecular pressure difference.

AB - A detailed study of pressure- and temperature-driven flows through long channels of triangular and trapezoidal cross sections is carried out. Due to the imposed pressure and temperature gradients there is a combined gas flow consisting of a thermal creep flow from the cold toward the hot reservoir and a Poiseuille flow from the high- toward the low-pressure reservoir. The formulation is based on the linearized Shakhov model subject to Maxwell boundary conditions, and it is solved numerically using a finite-difference scheme in the physical space and the discrete velocity method in the molecular velocity space. The results are valid in the whole range of the Knudsen number. In addition to the dimensionless flow rates, a methodology is presented to estimate for a certain set of input data the mass flow rates and the pressure distribution along the channel. Finally, special attention is given to the case of zero net mass flow and to the computation of the coefficient of the thermomolecular pressure difference.

U2 - 10.1080/01457632.2011.562455

DO - 10.1080/01457632.2011.562455

M3 - Article

VL - 32

SP - 1101

EP - 1107

JO - Heat Transfer Engineering

T2 - Heat Transfer Engineering

JF - Heat Transfer Engineering

SN - 0145-7632

IS - 13-14

ER -