The Pencil Code is primarily designed to deal with weakly compressible turbulent flows, which is why we use high-order first and second derivatives. To achieve good parallelization, we use explicit (as opposed to compact) finite differences. Typical scientific targets include driven MHD turbulence
... [More] in a periodic box, convection in a slab with non-periodic upper and lower boundaries, a convective star embedded in a fully nonperiodic box, accretion disc turbulence in the shearing sheet approximation, self-gravity, non-local radiation transfer, dust particle evolution with feedback on the gas, etc. A range of artificial viscosity and diffusion schemes can be invoked to deal with supersonic flows. For direct simulations regular viscosity and diffusion is being used. [Less]
PPIV is a parallel software application used in Particle Image Velocimetry (PIV) analysis. The software will compute the vector field for one image pair or multiple image pairs. PPIV can run on a single desktop machine or in a cluster environment.
tcpAnalyser is a tcp flow analyser. Given a tcp flow, where a flow is identified by ip address , source port number, dest ip address , dest port number, it groups packets into clusters and determines wether a given packet was a duplicate or a filler of a previous ( or the same ) group. It then
... [More] performs some computations and displays some aggregate statistics on the groups. Its helpful to analyse flow throughput or debug tcp performance issues. If you are using a binary tcpdump file it is important to convert it to ascii (tcpdump -nr ) before feeding it to the analyzer [Less]