A Three-Dimensional, Immersed Boundary, Finite Volume Method for the Simulation of Incompressible Heat Transfer Flows around Complex Geometries

Open access
Date
2017-06-19Type
- Journal Article
Abstract
The currentwork focuses on the development and application of a newfinite volume immersed boundarymethod (IBM) to simulate
three-dimensional fluid flows and heat transfer around complex geometries. First, the discretization of the governing equations
based on the second-order finite volume method on Cartesian, structured, staggered grid is outlined, followed by the description
of modifications which have to be applied to the discretized system once a body is immersed into the grid. To validate the new
approach, the heat conduction equation with a source term is solved inside a cavity with an immersed body. The approach is then
tested for a natural convection flow in a square cavity with and without circular cylinder for different Rayleigh numbers.The results
computed with the present approach compare very well with the benchmark solutions. As a next step in the validation procedure,
the method is tested for Direct Numerical Simulation (DNS) of a turbulent flow around a surface-mounted matrix of cubes.The
results computed with the present method compare very well with Laser Doppler Anemometry (LDA) measurements of the same
case, showing that the method can be used for scale-resolving simulations of turbulence as well. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000192161Publication status
publishedExternal links
Journal / series
International Journal of Chemical EngineeringVolume
Pages / Article No.
Publisher
Hindawi Publishing CorporationMore
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