The numerical method is developed for efficient modelling of multiphase flow in porous media with complex interface motion and irregular solid boundaries.
Solids motion and time-averaged solids concentration were measured using Positron Emission Particle Tracking (PEPT) and local heat transfer coefficients measured using small probes which employ electrical resistance heating and thermocouple temperature measurement.
The effect of viscosity of pore fluid is restricted only to dissipation due to the relative motion between fluid and solid particles.
Enhancing the fluctuating kinetic motion of gas and solid phase increases the SO2 adsorption, whereas the NO adsorption is decreased marginally.
Interestingly, mucus is viscoelastic: it is marked by both viscosity (a liquid property), because of its resistance to flow and its capacity to absorb energy when in motion, and elasticity (a solid property), because of its capacity to store energy that is used to move or deform mass.
Our results show that there are several regimes of instability, and the nature of stability significantly depends on the symmetry of oscillatory fluid and solid motion.
In general, because of the symmetry of the system, the fluid and solid motion can be represented as a superposition of symmetric and antisymmetric solutions (Figure1).
However, we show in Section 'Antisymmetric solution' that a nonparabolic basic flow can be destabilized at an anomalously slow flow speed with perturbations of antisymmetric fluid and solid motion.
The solid particle motion is almost the same as that of the Rayleigh wave, which is more circular at the boundary than in the symmetric case (e.g., see Chapter 5 in Aki and Richards2002). Figure 3 Fluid and solid motion of Krauklis wave along z -direction projected onto the xz -plane.
The non-linear differential equations of motion of the tetrahedral and solid finite elements are developed by using the principle of virtual work in dynamics.
