VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • The wavelet transform for BEM computational fluid dynamics
    Ravnik, Jure ; Škerget, Leopold ; Hriberšek, Matjaž
    A wavelet matrix compression technique was used to solve systems of linear equations resulting from BEM applied to fluid dynamics. The governing equations were written in velocity-vorticity ... formulation and solutions of the resulting systems of equations were obtained with and without wavelet matrix compression. A modification of the Haar wavelet transform, which can transformvectors of any size, is proposed. The threshold, used for making fully populated matrices sparse, was written as a product of a user defined factor and the average value of absolute matrix elements values. Numerical tests were performed to assert, that the error caused by wavelet compression depends linearly on the factor , while the dependence of the error on the share of thresholded elements in the system matrix is highly non-linear. The results also showed that the increasing non-linearity (higher Ra and Re numbervalues) limits the extent of compression. On the other hand, higher meshdensity enables higher compression ratios.
    Vir: Engineering analysis with boundary elements. - ISSN 0955-7997 (Vol. 28, iss. 11, Nov. 2004, str. 1303-1314)
    Vrsta gradiva - članek, sestavni del
    Leto - 2004
    Jezik - angleški
    COBISS.SI-ID - 9039126

    Povezava(-e):

    http://dx.doi.org/10.1016/j.enganabound.2004.05.002
    Digitalna knjižnica Univerze v Mariboru – DKUM

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