v.Heat

(Closed Beta)

V.Heat is an extension of V.Flow that allows simulating heat transfer in the context of incompressible, turbulent flows.

Similar to the vorticity modeling in v.Flow, the underlying model here uses (additional) heat elements to represent the temperature field.

This representation allows for physically and numerically overall consistent methodology, which provides time-accurate solutions to extremely complex turbulent flows with heat transfer.

 

v.Heat Features

 

Turbulent forced convection

 

Turbulence occurs nearly everywhere in nature. It is characterized by the efficient dispersion and mixing of vorticity, heat, and contaminants. In flows over solid bodies, such as airplane wings or turbine blades, or in confined flows through ducts and pipelines, and is responsible for increased drag and heat transfer. Turbulence is therefore a subject of great engineering interest. Forced convection occurs when an external force, such as a pump, fan, or mixer, induces a fluid flow. On the other hand, natural convection is caused by buoyancy forces due to density differences caused by temperature variations in a fluid. Upon heating, the density change in the boundary layer will cause the fluid to rise and be replaced by cooler fluid, which will also heat and rise. These continuous phenomena are called free or natural convection.

 

Natural and mixed convection (optional Boussinesq approximation)

 

Combined forced convection and natural convection, or mixed convection, occurs when natural convection and forced convection mechanisms act together to transfer heat. This is also defined as situations where both pressure forces and buoyant forces interact. How much each form of convection contributes to the heat transfer is largely determined by the flow, temperature, geometry, and orientation. The nature of the fluid is also influential, since the Grashof numer increases in a fluid as temperature increases, but is maximized at some point for a gas.

 
 
 
 

Platform Requirements

  • Supported Architectures:

    • Cray Supercomputers

    • SGI  Supercomputers

    • IBM Supercomputers

    • Linux Clusters

    • Compaq Supercomputers

  • Additional Software:

    • Message Passing Interface (MPI)

  • Recommended Minimum Platform Configuration:

    • 48 or more 1-2 GHz processors

    • 4 GB  memory per processor

    • 4 GB available disk space for output files

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