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Second Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2001, KTH, Stockholm, Sweden

DOI: 10.1615/TSFP2

DIRECT NUMERICAL SIMULATION OF INTERACTIONS BETWEEN BUBBLES AND WALL-TURBULENCE

pages 389-394
DOI: 10.1615/TSFP2.650
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Краткое описание

A new computational method for investigating interactions between bubbles and turbulence has been developed. Both liquid and gas phases are treated as incompressible continuum fluids and solved by a finite volume method, while the interface between the phases is resolved by a front-tracking method. The accuracy of the method is validated for the problem of a single rising bubble. The method has been applied to a direct numerical simulation (DNS) of a fully developed turbulent channel flow containing bubbles. The results of DNS computations suggest that large bubbles can be preferable for the frictional drag reduction at low Reynolds numbers.

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