[FLASH-USERS] FLASH 4.0 released

[Morgan MacLeod]

Dear FLASH Users,

I noticed that the option to excise a hole from the grid with the split
solver appears to have been removed between FLASH4-beta and FLASH4. (this
used to be done with useHole = .true.).

Can anyone comment on the reason for removing this option?

Thank you,

Morgan

On Fri, Sep 14, 2012 at 3:28 PM, Klaus Weide <klaus at flash.uchicago.edu>wrote:

> The Flash Center is pleased to announce the release of the new version of
> the FLASH code, version 4.0. FLASH4 closely follows the architecture of
> FLASH3. The most important changes from FLASH3 are several new
> capabilities in both physics solvers and infrastructure. A major part of
> the new physics capabilities were introduced to support simulations of
> high-energy-density physics (HEDP). FLASH4 also includes four significant
> capabilities contributed by our external users.
>
>
> The major new capabilities in FLASH4 that were not included in FLASH3
> are (marked with ** are the external contributions, please see the
> User's Guide for references and appropriate credits):
>
> * 3T capabilities in the split and unsplit Hydro solvers.
>   There is support for non-Cartesian geometry, and
>   the unsplit solver also supports stationary rigid bodies.
>
> * Upwind biased constrained transport (CT) scheme in the unsplit
>   staggered mesh MHD solver.
>
> * Full corner transport upwind (CTU) algorithm in the unsplit
>   hydro/MHD solver.
>
> * Cylindrical geometry support in the unsplit
>   staggered mesh MHD solver on UG and AMR. A couple of MHD
>   simulation setups using cylindrical geometry.
>
> * Radiation diffusion.
>
> * Conduction.
>
> * Heat exchange.
>
> * Multi-Temperature Multi-Material Multi-Table Eos.
>
> * Opacities, ability to use hot and cold opacities.
>
> * EnergyDeposition unit with laser ray tracing, with threading
>   for performance.
>
> * A new multipole solver.
>
> * Ability to replicate mesh for multigroup diffusion or other
>   similar applications.
>
> * OpenMP threading of several important solvers at both
>   coarse-grain (one block per thread) and fine-grain
>   (threads within a block) levels.
>
> * Ability to add particles during evolution.
>
> * Limited support for Chombo as an alternative AMR mesh package.
>
> * Several new HEDP simulation setups.
>
> * Hybrid PIC.  **
>
> * Barnes-Hut-Tree based gravity solver.  **
>
> * Primordial chemistry.  **
>
> * Sink particles.  **
>
>
> The release also includes several new features and resolves a number
> of bugs found in previous releases up to 4-beta.
>
>
> Please see the attachment for a more detailed summary,
> and for download instructions.
>
>
> Development of the FLASH Code was funded by the DOE-supported
> ASC/Alliance Center for Astrophysical Thermonuclear Flashes,
> and continues to be funded by DOE NNSA and NSF.
> We acknowledge support received from Lawrence Livermore National
> Laboratory and the University of Chicago.
>
> All publications resulting from the use of the FLASH Code must
> acknowledge the Flash Center for Computational Science.
> Addition of the following text to the paper acknowledgments
> will be sufficient.
>
>          "The software used in this work was in part developed by the
>          DOE- and NSF-supported Flash Center for Computational Science
>          at the University of Chicago."
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