01604nas a2200217 4500008004100000245006100041210006100102300001000163520099000173653001201163653002201175653001601197653001801213653001301231653002701244653001701271100002301288700001601311700002201327856003701349 2001 eng d00aParallel Detection of Closed Streamlines in Planar Flows0 aParallel Detection of Closed Streamlines in Planar Flows a84-883 aClosed streamlines are an integral part of vector field topology, since they behave like sources respectively sinks but are often neither considered nor detected. If a streamline computation makes too many steps or takes too long, the computation is usually terminated without any answer on the final behavior of the streamline. We developed an algorithm that detects closed streamlines during the integration process. Since the detection of all closed streamlines in a vector field requires the computation of many streamlines we extend this algorithm to a parallel version to enhance computational speed. To test our implementation we use a numerical simulation of a swirling jet with an inflow into a steady medium. We built two different Linux clusters as parallel test systems where we check the performance increase when adding more processors to the cluster. We show that we have a very low parallel overhead due to the neglectable communication expense of our implementation.
10a2D flow10aclosed streamline10alimit cycle10aLinux cluster10aparallel10astreamline computation10avector field1 aScheuermann, Gerik1 aHagen, Hans1 aWischgoll, Thomas uhttp://www.knoesis.org/node/2391