This work presents a comparison study of the CFD modeling with two different turbulence approaches viz. unsteady RANS and LES, on full-scale model (New) MEXICO rotor wind turbine. The main emphasis paper is wake aerodynamics. Simulations are carried out for three speeds considered in experiment (10, 15, 24 ms−1). results uRANS LES compared against experimental measurements pressure distribution...

Erosive wear of the parts gas path an axial compressor a turbine is common reason for premature decommissioning equipment. The creation advanced diagnostic system, which will allow determining level blade erosion according to standard parameters without inspection or disassembly, topical Russian transmission enterprises. paper presents preliminary results applying machine learning methods solve...

The recent success of continuous-flow circulatory support devices has led to the growing acceptance of these devices as a viable therapeutic option for end-stage heart failure patients who are not responsive to current pharmacologic and electrophysiologic therapies. This article defines and clarifies the major classification of these pumps as axial or centrifugal continuous-flow devices by disc...

This paper presents the results of simulations of the complete three-dimensional fluid flow through the Spiral Casing, Stay Vane, Guide Vane, and then through the Francis turbine runner of the Derbendikan power station. To investigate the flow in the Francis turbine and also to identify the loads acting on the turbine blades, a three-dimensional model was prepared according to specifications pr...

..̂IJ Previous papers described the Phase IA tests of the Rocketdyne configuration of the Space Shuttle Main Engine (SSME) High Pressure Fuel Turbopump (HPFTP) turbine with rough coated flight engine rotor blades and with polished coated rotor blades at Marshall Space Flight Center (MSFC) . The testing involved using scaled performance parameters and model measurements to determine the performan...

In this paper, an alternative micro-gas turbine is proposed, where the traditional compressor-turbine arrangement replaced by axial, throughflow wave rotor. The investigated rotor features symmetrically cambered wall profiles and angled port for shaft power extraction uses shock rarefaction waves pressure exchange to achieve gas compression expansion within a single device. A validated quasi-on...

A computational fluid dynamics simulation is done for non-Newtonian fluid in a baffled stirred tank. The CMC solution is taken as non-Newtonian shear thinning fluid for simulation. The Reynolds Average Navier Stocks equation with steady state multi reference frame approach is used to simulate flow in the stirred tank. The turbulent flow field is modelled using realizable k-ε turbulence model. T...

An experimental study was conducted to investigate on the effects of the relative rotation directions of two tandwm wind turbines on the power production performance and flow characteristics in the wakes of two wind turbines in tandem. The experimental study was performed in a large-scale Aerodynamics/tmospheric Boundary Layer (AABL) Wind Tunnel located at the Aerospace Engineering Department o...

Initial results of an ongoing Navier-Stokes Computational Fluid Dynamics study of horizontal axis tidal current turbine hydrodynamics are presented. Part of the underlying motivation is assessing the effects of the Reynolds number on turbine performance and loads in steady and unsteady flow regimes. The study aims at a) providing initial verification and validation of Navier-Stokes CFD for stea...