In this study, the flow past a finite-length tapered cylinder is numerically investigated via finite-volume method with Reynolds numbers ranging from 50-250 and taper ratio l = 1.5. The corresponding lift drag coefficients, as well Strouhal are presented. factors related to discontinuity, through of 100 - 200, in coefficient, which wake structure cylinder, explained. Furthermore, influence on d...

At first sight, echolocating bats face a difficult trade-off. As flying animals, they would benefit from a streamlined geometric shape to reduce aerodynamic drag and increase flight efficiency. However, as echolocating animals, their pinnae generate the acoustic cues necessary for navigation and foraging. Moreover, species emitting sound through their nostrils often feature elaborate noseleaves...

This paper investigates and characterizes the aerodynamic performance of a unique platform of airfoils with inflatable, elastomeric actuators. By controlling the inflation of stretchable and tough pneumatic bladders of silicone at specific locations of threedimensionally printed airfoils, experiments demonstrate it is possible to manipulate aerodynamic lift and drag. Measurements on morphable a...

in this paper, the interactions of flow over two circular or rectangular cylinders, passing by each other, have been investigated, using overset grids method. two-dimensional incompressible governing fluid flow equations are solved using finite volume method. in this research, several interpolation methods have been tested to transfer data between grids. one of them called mass flux base interp...

Abstract This work investigates time-dependent ferrofluid flow past in a cylinder the presence of 10 kilo-ampere per meter magnetic field. The Reynolds number is about hundred to keep laminar and it high enough form von Karman vortex street. study presents results for velocity distributions, pressure lift coefficient, drag coefficient under influence stationary These are compared with absence f...

The S-shaped hydrofoil is often used in the design of reversible machinery due to its centrally symmetrical camber line. objective this paper study influence cloud cavitation on flow structure and unsteady characteristics lift drag around an via experimental tests numerical simulations. In component, were carried out a tunnel high-speed camera was record details with different numbers. results ...

flow structure and heat transfer characteristics around two-equal in-tandem square cylinders in the two dimensional laminar and turbulent flow regimes are simulated numerically for reynolds and prandtl numbers, re=1-1×10 5 , pr=0.71, respectively. the investigation is based on an implicit finite volume scheme for integrating the unsteady navier-stokes equations and use of standard κ-ε model to ...

Unmanned aerial vehicles (UAVs) performing their operations for a long time have been attracting much attention in military and civil aviation industries for the past decade. The applicable field of UAV is changing from the military purpose only to the civil one. Because of their low operation cost, high reliability and the necessity of various application areas, numerous development programs h...

A sweep process of a wing is very useful technique to enhance an aircraft performance especially the which fly in sonic and supersonic areas. In this research, influence swept on aerodynamic characteristics generation at speeds has been studied analyzed using CFD technique. The 3D model presented paper NACA 2412 profile. governing equations such as continuity, Energy Equation, Reynolds Averagin...