Current electricity needs continue to rely on depleting fossil fuels such as fuel and coal. The current government effort is find non-fossil alternative energy sources. Wind one of the efforts use ecologically friendly renewable energy. Studies development new are now undertaken. One them a series research utilization wind in numerous places Indonesia through construction turbines. blade that e...

In contrast to conventional dry separators, new types of wet scrubbers with innovative nozzle geometries are capable separating submicron particles comparatively low pressure drop. As those can easily be adapted using 3D-printing manufacturing, an applied geometry optimization lead a fast and cost-efficient product development cycle. this study, the lattice Boltzmann method is used optimize dro...

Open-loop active flow control is used to modify the spanwise distribution of circulation around an NACA 0012 and flat plate wing. The leading edge on both airfoils and tip regions of the NACA airfoil contain spatially localized actuators that can be independently controlled in terms of amplitude and frequency, allowing the spanwise distribution of circulation to be modified. Different orientati...

We present a three-dimensional Reynolds-averaged Navier–Stokes investigation of the impact on nozzle aerodynamic performance of deflector vanes used for noise suppression in separate-flow turbofan engines. The vanes are installed in the bypass duct and deflect the bypass plume downward relative to the core plume. This study considers a single pair of vanes, with a NACA 0012 airfoil section, ins...

Abstract The power output of a straight-bladed H-rotor Darrieus vertical axis wind turbine (HDVAWT) is explored in this article. comparisons are performed between the NACA0018 airfoil and series Kline Fogelman modified airfoils. computational fluid dynamics findings first cross-checked with experimental data, processes validated as consequence. Then, CATIA, 12 airfoils were constructed by modif...

Computational aeroacoustic methods are applied to the modeling of noise due to interactions between gusts and the leading edge of real symmetric airfoils. Single frequency harmonic gusts are interacted with various airfoil geometries at zero angle of attack. The effects of airfoil thickness and leading edge radius on noise are investigated systematically and independently for the first time, at...

Supersonic channel airfoil design techniques have been shown to significantly reduce drag in high-speed flows over diamond shaped airfoils by Ruffin and colleagues. The effect of applying these techniques to a NACA 66-206 airfoil is presented. The design domain entails channel heights of 8-16.6% thickness-to-chord and speeds from Mach 1.5-3.0. Numerical simulations show an increase in the lift-...

This paper concerns a numerical study of employing an adaptive trailing edge flap to control the lift of an airfoil subject to unsteady inflow conditions. The periodically varying inflow is generated by two oscillating airfoils, which are located upstream of the controlled airfoil. To establish the control system, a standard PID controller is implemented in a finite volume based incompressible ...

Chen Liu, Haijun Xie, Jun Xu, Chen Jian*, Ren Dai 2 School of Energy and Power Engineering, University of Shanghai for Science and Technology 3 E-mail: [email protected] 4 Abstract: 5 The Gurney flap (GF) is a miniature lift-enhancement device and is usually mounted at the trailing 6 edge of an airfoil. The GF and has been successfully applied to isolated airfoils, multi-element 7 airf...

Low-fidelity methods such as the Blade Element Momentum Theory frequently provide rotor aerodynamic performances. However, these must be coupled to databases or correlations compute heat transfer. The literature lacks average transfer around airfoil. present study develops for an over smooth and rough correlation coefficients were obtained from a CFD database using RANS equations Spalart–Allmar...