We consider the motion of a viscous compressible and heat conducting fluid confined in gap between two rotating cylinders (Taylor–Couette flow). The temperature is fixed but not necessarily constant. show that problem admits time-periodic solution as soon ratio angular velocities rational number.

In this work, we present an alternative methodology to solve the particle-fluid interaction in resolved CFDEM coupling framework. This numerical approach consists of a Discrete Element Method (DEM) with Computational Fluid Dynamics (CFD) scheme, solving motion immersed particles fluid phase. As novelty, our explicitly accounts for body force acting on phase when computing local momentum balance...

The dynamic behavior of the slip length in a fluid flow confined between atomically smooth surfaces is investigated using molecular dynamics simulations. At weak wall-fluid interactions, the slip length increases nonlinearly with the shear rate provided that the liquid/solid interface forms incommensurable structures. A gradual transition to the linear rate dependence is observed upon increasin...

During the last ten years, there has been enormous interest in understanding transport phenomena in micro and nanofluidic systems and, in particular, in accurate prediction of fluid flows with slip boundary conditions at liquid-solid interfaces. In this chapter, we discuss recent results obtained from molecular dynamics simulations of fluids that consist of monomers or linear polymer chains con...

A property of central interest for theoretical study of nanoconfined fluids is the density distribution of molecules. The density profile of the hard-sphere fluids confined within nanoslit pores is a key quantity for understanding the configurational behavior of confined real molecules. In this report, we produce the density profile of the hard-sphere fluid confined within nanoslit pores using ...

We investigate various swimming modes of Paramecium in geometric confinements and a non-swimming self-bending behavior like a somersault, which is quite different from the previously reported behaviors. We observe that Paramecia execute directional sinusoidal trajectories in thick fluid films, whereas Paramecia meander around a localized region and execute frequent turns due to collisions with ...

We perform drainage experiments of a linear alkane fluid (n-hexadecane) down to molecular thicknesses, and we focus on the role played by the confinement rate. We show that molecular layering is strongly influenced by the velocity at which the confining walls are approached: under high enough shear rates, the confined medium behaves as a structureless liquid of enhanced viscosity for a film thi...

The method of lattice boltzmann equation(LBE) is a kinetic-based approach for fluid flow computations. In the last decade, minimal kinetic models, and primarily the LBE, have met with significant success in the simulation of complex hydrodynamic phenomena, ranging from slow flows in grossly irregular geometries to fully developed turbulence, to flow with dynamic phase transitions. In the presen...

Simple and complex fluids undergo significant changes in their structural and rheological behaviour as they are progressively confined between narrowing walls. The understanding of these new fluid properties is of fundamental interest in applications ranging from thin film lubrication in micromachines to catalysis. The X-Ray surface forces apparatus (XSFA) is capable of non-destructive imaging ...