Quasi-axisymmetric structural components are very common in any mechanical equipment containing rotating components, such as turbo machinery. Identifying and exploiting symmetric properties in these components is key to simplify the creation of FE volume meshes. In this paper, a novel approach is proposed to detect exact cyclic symmetries, in order to decompose a quasiaxisymmetric CAD component...

The challenging problem of the full three-dimensional Taylor bubble has been addressed by using a Conservative Level Set method in order to deal with the multiphase flow. A moving mesh is used, aiming to optimize the simulation domain. The mesh is moved as the bubble rises, so the region of study can be limited to the surroundings of the bubble, notably reducing the domain’s size. This saving i...

The aim of this work is to analyze a viscous flow in the axisymmetric nozzle taken into account the mesh size both in the free stream and into the boundary layer. The resolution of the NavierStokes equations is realized by using the finite volume method to determine the supersonic flow parameters at the exit of convergingdiverging nozzle. The numerical technique uses the Flux Vector Splitting ...

Detached-Eddy Simulation (DES) is used to predict the flow over an axisymmetric cavity. The freestream Mach number is 0.4, the length-to-depth ratio of the cavity is equal to five. The main objectives are to characterize the instantaneous and mean properties of the solution, with a focus on the application of adaptive mesh refinement for improving the efficiency and fidelity of DES predictions....

this work reports the effect of nanotube aspect ratio and waviness index on stress and displacement distributions of functionally graded nanocomposite cylinders reinforced by wavy single walled carbon nanotubes based on a mesh-free method. the mechanical properties of these composites are assumed to be graded along radial direction and estimate by a micro mechanical model. in the mesh-free anal...

conclusions laparoscopic tapp inguinal hernia repair has longer operation time and more cost than the open technique. local wound complications were more prevalent in the open repair. the postoperative pain, the hospital stay, the scrotal-related complications as well as the recurrence rates were the same in the both groups. the laparoscopy can detect and treat other intra-abdominal pathologies...

Global stationary configurations of both aligned and logarithmic spiral magnetohydrodynamic (MHD) perturbations are constructed analytically within an axisymmetric background of razor-thin scale-free gas disc, which is embedded in an axisymmetric gravitational potential of a dark matter halo and involves an isopedic magnetic field almost vertically threaded through the disc plane. The scale-fre...

The Meshless Local Petrov-Galerkin (MLPG) method is one of the recently developed element-free methods. The method is convenient and can produce accurate results with continuous secondary variables, but is more computationally expensive than the finite element method. To overcome this disadvantage, a simple Heaviside test function is chosen. The computational effort is significantly reduced by ...