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Sat, 04 Mar 2000 00:00:00 +0200Sat, 04 Mar 2000 00:00:00 +0200Construction of Particlesets to Simulate Rarefied Gases
https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/727
In this paper a new method is introduced to construct asymptotically f-distributed sequences of points in the IR^d. The algorithm is based on a transformation proposed by E. Hlawka and R. Mück. For the numerical tests a new procedure to evaluate the f-discrepancy in two dimensions is proposed.Michael Hackpreprinthttps://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/727Mon, 03 Apr 2000 00:00:00 +0200Fast Generation of Low-Discrepancy Sequences
https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/732
The paper presents a fast implementation of a constructive method to generate a special class of low-discrepancy sequences which are based on Van Neumann-Kakutani tranformations. Such sequences can be used in various simulation codes where it is necessary to generate a certain number of uniformly distributed random numbers on the unit interval.; From a theoretical point of view the uniformity of a sequence is measured in terms of the discrepancy which is a special distance between a finite set of points and the uniform distribution on the unit interval.; Numerical results are given on the cost efficiency of different generators on different hardware architectures as well as on the corresponding uniformity of the sequences. As an example for the efficient use of low-discrepancy sequences in a complex simulation code results are presented for the simulation of a hypersonic rarefied gas flow.Jens Struckmeierpreprinthttps://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/732Mon, 03 Apr 2000 00:00:00 +0200