Convective Heat Transfer From Two Rotating Circular Cylinders in Tandem Arrangement Using Lattice Boltzmann Method

Hasan Nemati; Mousa Farhadi; Kurosh Sedighi; Mohammad Mohammadi Pirouz; Nima Niksefat Abatari

doi:10.3879/j.issn.1000-0887.2012.04.003

Volume 33 Issue 4

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Hasan Nemati, Mousa Farhadi, Kurosh Sedighi, Mohammad Mohammadi Pirouz, Nima Niksefat Abatari. Convective Heat Transfer From Two Rotating Circular Cylinders in Tandem Arrangement Using Lattice Boltzmann Method[J]. Applied Mathematics and Mechanics, 2012, 33(4): 406-424. doi: 10.3879/j.issn.1000-0887.2012.04.003

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Convective Heat Transfer From Two Rotating Circular Cylinders in Tandem Arrangement Using Lattice Boltzmann Method

doi: 10.3879/j.issn.1000-0887.2012.04.003

Faculty of Mechanical Engineering, Babol University of Technology,Babol, P.O.Box 484, Islamic Republic of Iran

Received Date: 2011-05-11
Rev Recd Date: 2011-11-08
Publish Date: 2012-04-15

Abstract

Abstract

A numerical investigation of the two-dimensional laminar flow past two rotating circular cylinders in tandem arrangement using lattice Boltzmann method was conducted. The numerical strategy for dealing with curved and moving boundaries of second-order accuracy for velocity and temperature fields was used. The effects of variation of rotational speed ratio and different gap spacing were studied at Reynolds number of 100 and Prandtl number of 0.71. A various range of rotational speed ratio for four different gap spacing of 3, 1.5, 0.7 and 0.2 were investigated. Results show that, for the first cylinder lift and drag coefficients for large amounts of gap spacing are similar a single cylinder while for the second cylinder lift coefficient with increasing angular velocity for all gap spacing is descending but drag coefficient is ascending with the exception of gap spacing of 3. Results of the averaged periodic Nusselt number on the surface of cylinders show that for small distance between cylinders and low angular velocity, conduction is dominant mechanism of heat transfer but for large distance and high angular velocity convection is main mechanism of heat transfer.
- lattice Boltzmann method(LBM),
- rotating circular cylinders,
- laminar flow,
- curved and moving boundaries

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References(30)

References

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