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Fakulteta za strojništvo, Ljubljana (FSLJ)
  • Computational multiscale framework for predicting different flow regimes in adiabatic bubbly flow [Elektronski vir]
    Žun, Iztok ; Tomiyama, Akio
    The essence of two-phase flow with phase changes is the understanding of flow regime transitions. Indicators of flow regime transition depend upon the scale of observation. The five-step approach ... allows us to build up knowledge in a logical order and facilitates prioritization. A complex adiabatic bubbly flow can be disassembled in four steps that comprise different scales. The four steps are: Identify structures that are known to exist, Determine the spatial relationships between the various structures, Study the spatio-temporal relationships between the structures, Determine the statistical significance of the various structures, their apparent generation mechanism and any interaction events. To reassemble the complex process in numerical simulation, the cascade approach is shown utilizing higher spatial resolution simulations to support lower spatial resolution modeling. Two examples are given in cascade modeling. The first example deals with the calculation of interfacial area source terms in Eularian scheme by windowing to bubble tracking method. The second example introduces N+2 field modeling with a window to an interface tracking method.
    Vir: Proceedings of 2nd Japanese-European Two-Phase Flow Group Meeting, Tsukuba, Japan, September 25 - 29, 2000 [Elektronski vir] (H-2.pdf (7 str.))
    Vrsta gradiva - prispevek na konferenci
    Leto - 2000
    Jezik - angleški
    COBISS.SI-ID - 4241435

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