By Takaji Inamuro (auth.), Prof. Haecheon Choi, Prof. Hyong Gwon Choi, Prof. Jung Yul Yoo (eds.)
This quantity provides the court cases of the ICCFD five - The 5th foreign convention on Computational Fluid Dynamics, held July 07 - eleven, 2008 in Seoul, South Korea.
The contributions have been selected out of 3 different types of study: cutting edge modeling of stream physics, cutting edge set of rules improvement for stream simulation, optimization and regulate, and complex multidisciplinary purposes utilizing the abovementioned leading edge technologies.
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Extra resources for Computational Fluid Dynamics 2008
Pressure gradient: ηK := hK ∇ph K . Velocity gradient: ηK := hK ∇2h vh K . Residual indicator: ηK = ρK (vh , ph ), 34 R. Rannacher ρK (vh , ph ) := hK Rh 1/2 K + hK rh ∂K\∂Ω + hK ∇ · vh K Rh|K := f +νΔvh −vh · ∇vh −∇ph , rh|Γ := 12 [ν∂n vh −nph ], • if Γ ⊂ ∂Ω. “Weighted” indicator: ηK := ρK (vh , ph ) ωK , sensitivity factors ωK computed from an associated “dual” problem. The resulting meshes and the corresponding solution eﬃciencies are shown in Figures 2 and 3. This clearly demonstrates the principle superiority of sensitivity-based mesh adaptation over purely feature- or smoothness-based reﬁnement in computing local properties of the solution.
4. Unseady two-phase ﬂows in a branch channel; the interface of two-phase is shown. (t∗ = tV /L). Solid-Liquid Mixture Flows Finally, a solid-ﬂuid mixture ﬂow simulated by the LBM for multicomponent immiscible ﬂuids with the same density  is presented. In the calculation, a particle is modeled by a hard droplet with large viscosity and strong surface tension, and consequently there is no need to track the moving solid-liquid boundary explicitly . In addition, nonspherical particles are made by applying artiﬁcial forces to the droplet.
The parameter κf , the mobility of the order parameter, and the lattice spacing Δx. The study of the accuracy concerning these parameters is required in future work. Also, the development of methods without solving the Poisson equation for pressure ﬁeld is desired. Finally, we expect that the present LBMs will become promising numerical schemes for simulating viscous ﬂuid ﬂows and two-phase ﬂuid ﬂows, and that the schemes will be used in many new areas of applications. For example, the author applies the two-phase LBM to the calculations of two-phase ﬂuid ﬂows in micro channels and in porous media where the capillary force plays an important role for determining the ﬂow characteristics.
Computational Fluid Dynamics 2008 by Takaji Inamuro (auth.), Prof. Haecheon Choi, Prof. Hyong Gwon Choi, Prof. Jung Yul Yoo (eds.)