newschannelflow: a spectral fluid-flow simulator - News

 
 
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Latest News Approved
channelflow has moved to www.channelflow.org
     posted by gibson17, Mon 17 Sep 2007 01:32:52 PM UTC

channelflow has moved to www.channelflow.org

0.9.22: autoconf "./configure; make" system
     posted by gibson17, Thu 16 Feb 2006 10:14:13 PM UTC

Version 0.9.22 represents several major changes in channelflow's software organization: (1) a new "./configure; make; make install" system using GNU autoconf and automake, (2) restructuring of the package directories, and (3) a switch from CVS hosted on savannah to Subversion hosted at Georgia Tech. [...]

Kaushik Srinivasan : broken email address; please contact me!
     posted by gibson17, Mon 13 Feb 2006 03:00:33 PM UTC

Hi, Kaushik. I have not been able to respond to your questions regarding channelflow because the email I've sent to <kaushik@jncasr.ac.in> bounces back. Can you write me again with a different address?

thanks

John Gibson

0.9.19: FFTW create_plan bugfix
     posted by gibson17, Tue 15 Nov 2005 09:06:37 PM UTC

In rare circumstances FFTW create_plan would create bad plans. Workaround is to always use FFTW_MEASURE. See ChangeLog.

Added checks for zero fftw_plans before calling fftw_destroy_plan.

0.9.18: bugfix in Chebyshev transform, doc update for DNS class
     posted by gibson17, Tue 15 Nov 2005 09:03:05 PM UTC

Fixed a bug in Chebyshev transforms introduced in FFTW3 upgrade (missing factor of 2 or 1/2 in last mode in transforms).

Updated documentation to reflect new DNS class and time stepping algorithms.

Other minor changes (see ChangeLog).

0.9.18 was released Oct 28 2005

0.9.17: upgraded to FFTW-3.x
     posted by gibson17, Tue 18 Oct 2005 04:03:43 PM UTC

Upgraded to FFTW-3.x.
Removed a number of ChebyTransform methods. Equivalent functions are available in ChebyCoeff and ComplexChebyCoeff.
Made BasisFunc in arbitrary in dimension. Formerly fixed Nd=3.

0.9.16: network-order binary IO
     posted by gibson17, Tue 18 Oct 2005 03:27:24 PM UTC

Binary IO methods now use network-order endianness on all platforms (i.e. big-endian). Will need cross-platform checks from others, particularly with other compilers/OSes on little-endian machines.

0.9.15: New DNS class replaces old NSIntegrator.
     posted by gibson17, Tue 18 Oct 2005 03:05:59 PM UTC

Major changes in algorithms and software structure to  time-integration methods. Implemented semi-implicit backwards-differentiation methods of orders 1-4 (SBDF1-SBDF4) and a 2nd-order semi-implicit Runge-Kunta (CNRK2).

Implemented in new DNS class, with a base-, derived-, handle-class hierarchy for different classes of time-stepping [...]

Channelflow-0.9.14. A few minor bug fixes
     posted by gibson17, Wed 08 Jun 2005 03:56:22 PM UTC

Changed RHS of PressureSolver to -div nonl u (was div nonl u).
Fixed DNSFlags constructor default arg for tau correction.
Fixed FlowField:ygridpoints() bug for [a,b] != [-1,1].
Switched calls from misleading std lib norm(complex) to true_norm(Complex).

Changed some typesetting in mathdefs.h
Added IO mthods for DNSFlags.
Added default state arg to Chebyshev and ComplexChabyshev ctors.
Removed obsolete global const int MATLABVERSION

0.9.13: new differential operators, PoissonSolver, name changes
     posted by gibson17, Thu 26 May 2005 05:14:13 PM UTC

Main changes:
Added FlowField differential operators: diffops.{h,cpp}.
Added PoissonSolver and PressureSolver classes.
More consistent norm functions: L2Norm, divNorm, bcNorms.
Clarified modenumber mx vs gridnumber nx in FlowField headers [...]


Older News Approved
0.9.12: fixed gcc-3.3 nameclash, other small fixes posted by gibson17, Wed 16 Mar 2005 06:31:17 PM UTC
0.9.11: removed orrsommfunc.{h,cpp} posted by gibson17, Wed 21 Apr 2004 08:34:41 PM UTC
0.9.10 release: bugfix in NSIntegrator posted by gibson17, Sat 31 Jan 2004 09:34:01 PM UTC
0.9.8 release, with user's manual posted by gibson17, Sat 29 Nov 2003 03:49:26 PM UTC
documentation in progress posted by gibson17, Mon 03 Nov 2003 03:04:46 PM UTC

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