|Title:||Comparison of C–Space and P–Space Particle Tracing Schemes on High–Performance Computers: Accuracy and Performance||Authors:||Schäfer, Frank
|Language:||eng||Subject (DDC):||000 Informatik, Information & Wissen, allgemeine Werke
|Issue Date:||2002||Publisher:||Wiley & Sons Limited||Document Type:||Article||Source:||Schäfer, F. and Breuer, M. (2002), Comparison of c-space and p-space particle tracing schemes on high-performance computers: accuracy and performance. Int. J. Numer. Meth. Fluids, 39: 277-299. https://doi.org/10.1002/fld.324||Journal / Series / Working Paper (HSU):||International Journal for Numerical Methods in Fluids||Volume:||39||Page Start:||277||Page End:||299||Publisher Place:||Chichester||Abstract:||
The present paper presents a comparison of four different particle tracing schemes which were integrated into a parallel multiblock flow simulation program within the frame of a co-visualization approach. One p-space and three different c-space particle tracing schemes are described in detail. With respect to application on high-performance computers, parallelization and vectorization of the particle tracing schemes are discussed. The accuracy and the performance of the particle tracing schemes are analyzed extensively on the basis of several test cases. The accuracy with respect to an analytically prescribed and a numerically calculated velocity field is investigated, the latter in order to take the contribution of the flow solver's error to the overall error of the particle traces into account. Performance measurements on both scalar and vector computers are discussed. With respect to practical CFD applications and the required performance especially on vector computers, a newly developed, improved c-space scheme is shown to be comparable to or better than the investigated p-space scheme. According to accuracy the new c-space scheme is considerably more advantageous than traditional c-space methods. Finally, an application to a direct numerical simulation of a turbulent channel flow is presented.
|Organization Units (connected with the publication):||Strömungsmechanik||Publisher DOI:||10.1002/fld.324|
|Appears in Collections:||6 - Bibliographic Data - Publications of the HSU Researchers (before HSU)|
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