Publications by authors named "Wahyu P Yudistiawan"
Higher-order Galilean-invariant lattice Boltzmann model for microflows: single-component gas.
Phys Rev E Stat Nonlin Soft Matter Phys
October 2010
We introduce a scheme which gives rise to additional degree of freedom for the same number of discrete velocities in the context of the lattice Boltzmann model. We show that an off-lattice D3Q27 model exists with correct equilibrium to recover Galilean-invariant form of Navier-Stokes equation (without any cubic error). In the first part of this work, we show that the present model can capture two important features of the microflow in a single component gas: Knudsen boundary layer and Knudsen Paradox.
View Article and Find Full Text PDFHydrodynamics beyond Navier-Stokes: the slip flow model.
Phys Rev E Stat Nonlin Soft Matter Phys
July 2008
Article Synopsis
- The paper explores the applicability of lattice Boltzmann (LB) models, specifically the nine-bit model, in studying nonlinear Couette flow as relevant to hydrodynamics beyond the typical continuum limit.
- It provides a systematic investigation of the nine-bit model to quantify its effectiveness as a slip flow approximation, presenting analytical solutions for velocity in different flow scenarios including Couette and Poiseuille flows.
- Results show strong agreement with known slip flow solutions, confirming that the nine-bit LB model serves as a valid and consistent approach for simulating flows beyond traditional Navier-Stokes equations.