咨询：ansys fluent-immersed boundary module

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咨询：ansys fluent-immersed boundary module

The Immersed Boundary Approach to Fluid Flow Simulation;-----A rapid, reliable and automated approach simulates complex flow fields.
关于这个模块好像是单独购买的，因为，目前在国内的D版上一直没有发现这个module,不知众位广大网友，有用过的发点信息，关于模块的使用，如何购买的，大约价格之类的？有用的信息都可以。。

ansys官方是这么介绍的：A conventional CFD simulation starts with the transfer of CAD data to a gridgeneration package in which a surface mesh and then a volume mesh are generated before the simulation can be set up and solution run. The effort and time required to take geometry from a CAD package and generate a mesh is usually a
large portion of the overall human time required for the simulation, and it can be significant. For cases with complex or dirty geometry requiring CAD cleanup, this part of the process may take from 50 percent to 90 percent of the total time required for the simulation. The immersed boundary (IB) method, available through an add-on module for ANSYS FLUENT 12.0 software — jointly developed by ANSYS, Inc. and Cascade Technologies — dramatically reduces the amount of time needed for fluid flow simulations and provides fast results by directly addressing the challenges associated with this step. Since multiple geometries can be analyzed quickly, IB is especially useful as a preliminary design analysis tool for identifying candidates for further higher-fidelity analysis.

The power of the immersed boundary method lies in the meshing technique.Fluid flow simulations using the Immersed Boundary module for ANSYS FLUENT 12.0 software start with the surface data of the simulation geometry in STL format. This CAD geometry does not need to be clean, does not require smooth surfaces or geometry connectivity, and may contain overlapping surfaces, small，holes and even missing parts. The simulation geometry is meshed using automatically generated non-body fitted Cartesian meshes, in which the computational grid does not conform to the geometry. Mesh refinement is carried out
automatically, by specifying the resolution on the desired boundaries. Using the IB meshing technique greatly reduces the amount of time spent preparing the geometry for meshing and creating the mesh. It also avoids time-consuming and error-prone CAD-to-CFD geometry conversions and clean-up issues, such as misinterpreted CAD geometrical entities  and connectivity.  When creating meshes with the IB module, the immersed boundary mesh cells are not body-fitted and are usually not aligned with the geometry face. Therefore, when using the IB module, the CFD-governing equations are modified in  the cells cut by the interface by adding source terms. This allows physical boundary conditions to be enforced through reconstruction schemes that emulate body-fitted behavior in combination with commonly used turbulent wall functions.This first release of IB is fully parallelized and supports the ANSYS FLUENT physical models and boundary conditions needed for modeling low-speed external aerodynamics and automotive front-end airflows. Essentially, the IB module provides a rapid, automated,preliminary design approach by allowing an adaptively refined high-quality Cartesian mesh to be automatically generated on complicated STL surface representations. The tool offers the ability to save customer time and money by reducing the human effort needed to go from CAD to CFD results.

jguangbiao

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falltime

CFX有个immersed solid功能，不知是不是IBM