Simulation of Planar Shear Flow Passing Two Equal-Sized Circular Cylinders in Tandem Arrangement

Simulation of natural convection heat transfer using nanofluid in a concentric annulus

“…The major advantages of the LBM are due to the fact that the solution for the particle distribution functions is explicit, easy for parallel computation and implementation of boundary conditions on complex boundaries is simple. It has been used for simulating the flow field in wide ranges of engineering applications such as natural convection [12], nanofluid [13,14], unsteady flow [15][16][17][18][19][20], etc.The aim of this study is to investigate heat transfer characteristics of natural convection in the annulus between horizontal concentric cylinders filled with Al 2 O 3 -water nanofluid.The LBM with single-relaxation-time collision model is employed. The study is carried out at a various range of annulus gap width ratio (0.5 ≤ σ ≤ 5) and solid volume fractions (0% to 4%) at Rayleigh numbers 10 3 -10 5 .…”