Aerospace Science and Technology
Experimental Investigation of the Effects of Leading-Edge Serration on the Blades of Savonius Wind Turbine

Sahel Alasvand; Mostafa Kazemi; Mahmood Mani

Volume 17, Issue 1 , June 2024, , Pages 1-8

https://doi.org/10.22034/jast.2023.398694.1150

Abstract
  The noise of wind turbines is mainly of aerodynamic origin and is caused by the impact of the flow on the turbine blade. Therefore, improving the behaviour of the flow around the turbine and reducing aeronoise can result in reducing its annoying noise. In the first step of this research, a suitable serration ...  Read More

Aerospace Science and Technology
Experimental Investigation of using Plasma Actuators as Virtual Gurney Flap

Bahareh Mojarrad; Saeed Oveisi; Mostafa Kazemi; Mahmoud Mani

Volume 14, Issue 1 , June 2021, , Pages 103-110

https://doi.org/10.22034/jast.2021.297217.1085

Abstract
  The primary objective of this study was to demonstrate how plasma actuators could be used to discharge a perpendicular dielectric barrier as a virtual Gurney flap. This study utilized wind tunnel experiments on a flat plate airfoil. Each experiment is conducted at two different free flow velocities of ...  Read More

Aerospace Science and Technology
Investigating the Effect of Different Winglet Cant Angles on a Supercritical Wing Aerodynamic Efficiency at Lower Reynolds numbers

Parisa Ghanooni; Mostafa Kazemi; Mahmoud Mani

Volume 14, Issue 1 , June 2021, , Pages 111-116

https://doi.org/10.22034/jast.2021.297211.1084

Abstract
  This study focuses on improving performance of a supercritical wing equipped with winglets at different cant angles. This study aims to experimentally investigate the variation of aerodynamic performance of a supercritical wing of NASA Sc (2)-0410 airfoil at lower Reynolds numbers with winglets at various ...  Read More

Experimental Investigation of The Geometric Properties of Different Rotor Blades for Controlling the Wingtip Vortex

Mostafa Kazemi; parisa Ghanoni; Mahdi Sharifi; Mahmood Mani

Volume 13, Issue 1 , June 2020, , Pages 89-98

https://doi.org/10.22034/jast.2020.119915

Abstract
  This study focuses on using rotor blade turbine winglets for the purpose of controlling the wingtip vortex in airplanes. The aim of the study is to investigate the effective geometric properties of the rotor blades that are used as winglets, as well as experimental evaluation of their effects on drag, ...  Read More

Plunging Airfoil Load Characteristics Equipped with Gurney Flap

M. Mani

Volume 10, Issue 2 , September 2013, , Pages 25-36

Abstract
  Numerous experiments have been conducted on plunging Eppler 361 airfoil in a subsonic wind tunnel. The experimental tests involved measuring the surface pressure distribution over the airfoil at Re=1.5×105. The airfoil was equipped with Gurney flap(heights of 2.6, 3.3 and 5% chord) and plunged at 6cm ...  Read More

EXPERIMENTAL INVESTIGATION OF EFFECTS OF WALL POROSITY AND SUCTION ON THE FLOW QUALITY IN A TRANSONIC WIND TUNNEL

Kaveh Amiri; Mohammad Reza Dr. Soltani; H. Haghiri; Mahmood Mani

Volume 6, Issue 2 , June 2009, , Pages 63-70

Abstract
  A trisonic wind tunnel has been modified to improve its flow quality when operating at transonic speeds through perforated walls and side suctions. The usefulness of such a perforated wall, already known, is reduction of the blockage effect as well as the shock elimination. Two types of perforated walls ...  Read More