Dear all, We are pleased to announce the release of Nektar++ v5.7.0. As always, if you encounter any problems please feel free to contact us on the mailing list nektar-users@imperial.ac.uk. You can also report bugs and issues on our issue tracker (https://gitlab.nektar.info/nektar/nektar/-/issues). This release includes a range of new features and improvements over the 5.6.0 release: **Library** - Modified MatrixFreeOp library switch initialisation to use BOOST_PP (!1794) - Fix memory-leak with LowEnergyBlock preconditioner for time-updated matrices (!1627) - Fix Fourier expansion integration weights are related test (!1803) - Introduced the MatrixFree implementation for the PhysInterp1DScaled operator and tidying up MatrixFreeOps (!1812) - Separate MeshGraph input/output functions into a new class (!1778) - Added checkpoint file writing start time in the fieldconvert filter (!1789) - Fix fieldconvert filter incorrect boundary values (!1789) - Fix numerical precision issues with filters OutputStartTime (!1789) - Fix AdaptiveSFD for MPI (!1821) - Fix interpolation on manifold (!1840) - Fix IterativeStaticCond when using absolute tolerance (!1850) - Fix deadlock by scotch with multi-threading support (!1853) - Fixed L2norm for FilterError (!1871) - Fix variable p in tetrahedrons (!1881) - Fix BwdTrans for Pyr with var P (!1886) - Allow wrapper array around a existing raw pointer (!1848) - Tweaked some long tests to make them faster (!!1918) **IncNavierStokesSolver** - Fix initial and boundary conditions in the moving reference frame (!1692, ! 1820) - Fix memory-leak for the Mixed_CG_Discontinuous projection when initializing the traceMep (!1806) - Add synthetic turbulence generation for the incompressible solver (!1664) - Fix a uninitialized parameter in VCS (!1880) **ShallowWaterSolver** - Implement implicit time-discritization (!1784) **CompressibleSolver** - Add synthetic turbulence generator for the compressible solver (!1859) **NekMesh** - Added revolve module (!1825) - Fix Prism Reordering in Process PerAlign (!1899) - Extend quality measures in ProcessJac and add histogram generation(!1751) - Reducing run time of some tests in NekMesh(!1922) - Extend quality measures in ProcessJac and add histogram generation (!1751) - Reducing run time of some tests in NekMesh (!1922) - Added a reader for the CGNS input format (!1889) **FieldConvert** - Add vortexinducedvelocity module to compute the vortex-induced velocity (! 1824) - Add a module to transform coordinates and vectors for the moving reference frame method (!1830) **Miscellaneous** - Use std::stod instead of boost::lexical_cast<NekDouble> (!1819) **Documentation** - Add initial documentation for the IncNavierStokesSolver (!1822) - Updated the supported packages in Userguid (!1904) - Added a example for RayleighBenardConvection in the user-guide for IncNS (! 1919) - Fix some typos in tutorials (!1929) **CI and Packaging** - Debian 10 (BUSTER) is no longer supported (!1902) - Support is added for Ubuntu Noble Numbat and droped for Bionic Beaver (!1910) - Removed Fedora 35/36, added Fedora 39/40 (!1909) Cheers, Chris -- Chris Cantwell Reader in Computational Engineering Department of Aeronautics Imperial College London South Kensington Campus London SW7 2AZ Tel: +44 (0)20 759 45050 Email: c.cantwell@imperial.ac.uk www.imperial.ac.uk/people/c.cantwell