Tip vortices are one of the most critical phenomena facing rotary wings such as propellers and wind turbine blades lead to changes in aerodynamic parameters blades. The winglet (WL) device is considered significant passive flow control devices. It used diminish strength at blade tip, enhance characteristics rotor blades, thereby increase overall efficiency. main objective this research improve ...

Analysis of the aerodynamic, thermal and aeroelasticity (including vibration) processes in gas turbine stage is principal for a design creating turbines jet engine integrally. In this article was review showed basic problems, which are solved by engineers take numerical analysis flow. The special aspects appearance vanes blades channels turbojets turbine. fundamental structure boundary layer vo...

Numerical simulations of time-periodic flows are an essential design tool for a wide range of engineered systems, including jet engines, wind turbines and flapping wings. Conventional solvers for time-periodic flows are limited in accuracy and efficiency by the low-order Finite Volume and time-marching methods they typically employ. These methods introduce significant numerical dissipation in t...

The NASA Juncture Flow experiment is a new effort whose focus is attaining validation data in the juncture region of a wing-body configuration. The experiment is designed specifically for the purpose of CFD validation. Current turbulence models routinely employed by Reynolds-averaged Navier-Stokes CFD are inconsistent in their prediction of corner flow separation in aircraft juncture regions, s...

An improved coupling of immersed boundary method and turbulence wall models on Cartesian grids is proposed, for producing smooth surface pressure skin friction at high Reynolds numbers. Spurious oscillations are frequently observed these quantities with most modeling methods, especially the which found to be very sensitive solid surface's position orientation against grids. The problem originat...

Aerodynamic performances may be optimised by the appropriate tuning of Active Flow Control (AFC) parameters. For first time, we couple Genetic Algorithms (GA) with an unsteady Reynolds-Averaged Navier-Stokes (RANS) solver using Spalart-Allmaras (SA) turbulence model to maximise lift and aerodynamic efficiency airfoil in stall conditions [1], then validate resulting set optimal Synthetic Jet Act...

Shell and tube heat exchangers are used to transfer thermal energy from one medium another for regulating fluid temperatures in the processing pasteurizing industries. Enhancement of a rate is desired maximize efficiency shell exchangers. In this research work, we performed computational dynamics (CFD) simulations experimental analysis on using round hexagonal tubes range flow velocities both p...