OpenLB - Open Source Lattice Boltzmann Code :: Project :: News
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2012/02/13 New Release 0.7 Available. A new module allows to analyze the performance of computations and runtime estimations (cf. "examples/cavity2d"). The console output is standardized including sequential and parallel output. Further, a rewritten unit converter enables direct conversion between physical and internal lattice units. The usage of the XML interface is simplified by direct class constructions from XML parameter files, illustrated in "examples/cavity2d". This example includes also a description file for OpenGPI, which provides a graphical user interface. Finally, the CVMLCPP-library has been updated to ensure compatibility with gcc-4.6.
2012/01/11 Forum on LBM and OpenLB Added. With the intension to allow discussions on OpenLB and Lattice Boltzmann Methods in general a new forum has been added to the OpenLB-website. Furthermore, a section concerning upcoming conferences and workshops on LBM has been included. This allows organizers to promote their events by informing the community e.g. by a short descriptions and links.
On the Way to the Wing Car. In racing, nothing works without innovative concepts and ideas in order to keep up with the competition. In the context of the student design competition "Formula Student" the "Hochschulgruppe" KA-RaceIng in cooperation with the Engineering Mathematics and Computing Lab (EMCL) are developing an aerodynamics package for the new racing car of the Karlsruhe Institute of Technology (KIT). For example in the Formula 1 spoilers an diffusers are already established techniques and with increasing importance an elementary component of competitive vehicles. In the recent seasons of "Formula Student" consideration of the aerodynamics has been introduced in Europe. Using the software OpenLB, which is co-developed at the EMCL, simulation and optimization of the vehicle based on the current model of the KIT12 is carried out. On this basis a new wing packet, consisting of front- and rearwings as well as a diffuser is designed. The findings of the computations can be directly implemented in the constructive process in order to obtain a holistic approach ailored to a 200kg heavy and 100hp strong car. In a first step an underbody has been constructed and simulated, which will be validated on the KIT12 prototype. Based on these results the pending simulation of the wings and the analysis of the entire vehicle will be carried out.
The contribution "A Preprocessing Approach for Innovative Patient-Specific Intranasal Flow Simulations" of Krause (EMCL), Gengenbach (EMCL), Mayer (SCC), Zimny (EMCL) and Heuveline (Head of EMCL) has won the Mimics Innovation Awards 2011 in the category 2 "Innovations in computer aided engineering". The prize was given for their work related to the international open source project OpenLB and EMCL's project United Airways. In the paper the researchers present a holistic concept enabling patient-specific airflow simulations in the nasal cavity based on CT data. A proof of conception is provided by means of a case study where advantage is taken of Materialise's software packages to segment the raw CT data in order to create a 3D model. The meshing, initialization and simulation is automated and realized in the framework of the CFD software package OpenLB.
2011/05/11 New release 0.6: The new release offers an automated preprocessing with built-in voxelization from stl-files and setting of boundary conditions based on material numbers. The usage is illustrated by the example "examples/cylinder3d". Further, an XML reader offers an interface for input parameters (cf. "examples/cavity2d").
2010/11/10 New team member: Thomas Henn joined the OpenLB project. He contributs code for reading STL files, which are surface representations of geometries consisting of triangles, and mesh generation for the use in OpenLB. He integrated CVMLCPP which is a common versatile multi-purpose library for C++. In OpenLB it provides the needed methods for the voxelization.
2010/10/13 New team member: Jonas Fietz joined the OpenLB project recently. He contributs code for config file parsing based on XML for the upcoming release. He is also core developer of another open source project called OpenGPI which is a generic parameter interface.
2010/08/20 Homepage relaunched
2009/07/27 The United Airways project has been awarded from the Itanium Solutions Alliance. The computations were perfomed in parallel using the OpenLB code.
*** Karlsruhe University's United
Airways project in Germany used
Itanium-based HP hardware to analyze
the interaction of the human nose,
sinuses, larynx and lungs with the
goal of compiling a complete numerical
simulation of flow behavior in the
human respiratory system. The end
benefits of this project include
optimizing asthma sprays, improving
the quality of medical operations
and understanding the impact of
respirable dust. ***