Due to the increasing tendency construct taller and more slender buildings, need address aerodynamic induced dynamic forces (inertial forces) under both service strength-level wind loads has become important. Currently, application of performance-based design (PBWD) reduce applied through acceptance inelastic deformation is permitted as an alternative approach, in which load can be reduced with...

The goal of this research is to develop a versatile and fast code to compute the unsteady lift and thrust forces generated by a flapping airfoil and apply it to engineering problems. We consider both plunging and pitching types of motion and develop a time marching simulation based on early work in unsteady aerodynamics. The ability of the code to compute lift and thrust forces is validated aga...

piezoelectrically deformed substrates Noah T. Jafferis, Howard A. Stone, and James C. Sturm Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University, Princeton, New Jersey 08544, USA Department of Mechanical and Aerospace Engineering, Princeton University, Princeton,...

This paper numerically investigates the effectiveness of the control of steady suction on a stationary circular cylinder with several isolated suction holes on the surface at a subcritical Reynolds number. The control effectiveness as a function of the azimuthal position, spanwise spacing and suction flow rate of the suction holes on the control of the aerodynamic forces on the cylinder and the...

Aerodynamic performance and agility during flapping flight are determined by the combination of wing shape and kinematics. The degree of morphological and kinematic optimisation is unknown and depends upon a large parameter space. Aimed at providing an accurate and computationally inexpensive modelling tool for flapping-wing aerodynamics, we propose a novel CFD (computational fluid dynamics)-in...