A spectral element—Fourier method (SEM) for Direct Numerical Simulation (DNS) of the turbulent flow of non-Newtonian fluids is described and the particular requirements for non-Newtonian rheology are discussed. The method is implemented in parallel using the MPI message passing kernel, and execution times scale somewhat less than linearly with the number of CPUs, however this is more than compe...

The steady two-dimensional stagnation point flow of a non-Newtonian Walters' B' fluid with slip is studied. The fluid impinges on the wall either orthogonally or obliquely. A finite difference technique is employed to obtain solutions. 1. Introduction. Some rheologically complex fluids such as polymer solutions, blood, paints, and certain oils cannot be adequately described by the Navier-Stokes...

In this work, the effect of amphiphobic surfaces on rheological behavior and boundary slip shear thickening fluids (STFs) was investigated. The experimental results suggested viscosities were diminished, delayed weakened, an ultrahigh drag reduction obtained. Furthermore, length observed to vary with rate. Dissipative particle dynamics (DPD) simulations adopted further investigate these specifi...

Lagrangian trajectories obtained through 3D Particle Tracking Velocimetry (3D-PTV) measurements have been used to visualize the flow field of Newtonian and non-Newtonian fluids in a flat-bottomed vessel. The vessel, diameter T=180 mm, was equipped with 6-blade Rushton turbine D=T/3 four baffles width b=T/10. experiments were carried out transitional regime (73≤Re≤1,257). velocities acceleration...

An unsteady mixed convectional boundary layer flow of a Casson nanofluid having magnetic ( Fe 3 O 4 ) and non-magnetic Al 2 nanoparticles suspension within two different types base fluids, water (Newtonian) sodium alginate (non-Newtonian), which incorporates viscous dissipation effects over nonlinear stretching sheet with field effects. Some suitable non-dimensional similarity transformations a...

The paper shows the successive steps of approximation of Picard unification for the solution of the non-isothermal fluid flow in thin layer including inertia forces and apparent viscosities described by the non-linear dependences. In this paper is presented a unified semi analytical method of solution of the asymmetrical, laminar, steady and unsteady, non-Newtonian lubrication problem flow betw...