A calculation procedure with multi-block iteration and moving mesh for heat and fluid flows in complex time-dependent geometries

Lai, H., Yan, Y. and Smith, J.M. (2002) A calculation procedure with multi-block iteration and moving mesh for heat and fluid flows in complex time-dependent geometries. International Journal of Numerical Methods for Heat and Fluid Flow, 12 (2), 106-125. (doi:10.1108/09615530210418285).

Record type: Article

Abstract

A calculation procedure is proposed for heat and fluid flows in geometries with a time-dependent boundary. The procedure incorporates a moving mesh arrangement with multi-block iteration and has been developed to assist future simulations of heat and mass transfer with phase change. The solver for the basic equations is the SIMPLE algorithm with a non-staggered grid arrangement. The space conservation law is invoked and applied for the explicit tracking of a moving boundary with a moving mesh. For mapping complex geometries a multi-block iteration strategy is employed. A cubic spline interpolation allows the "uniqueness of zonal boundary" requirement to be met. An interpolation method is also developed for variables near the zone boundaries. The calculation procedure using multi-block iteration and a moving mesh is applied to three benchmark-testing problems. The numerical results are in very good general agreement with available experimental data.

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Published date: 2002

Additional Information: This paper proposed a numerical method for calculating heat and flows in time-dependent geometries, combining strategies of a multi-block iteration and a moving mesh. This is a first step of establishing a basic algorithm so as to numerically study the micro heat and fluid flows in deformable rising bubbles.