In this paper we review several computational aerodynamics tools which we are using to examine and understand flapping flight. The computational methods incorporate different levels of geometric and physical modeling fidelity, ranging from simplified models which determine optimal wake vorticity distributions (eg. Hall et al.) to accurate descriptions of the flow physics. By exploiting multiple...

The standard region 2 control scheme for a variable speed wind turbine, τc = kω, has several shortcomings that can result in significant power loss. The first of these is that there is no accurate way to determine the gain k; modeling programs are not accurate enough to represent all of the complex aerodynamics, and these aerodynamics change over time. Furthermore, it is not certain whether the...

The main objective in this paper is creating a method for one-dimensional modeling of multi stage axial flow turbine. The calculation used in this technique is based on common thermodynamics and aerodynamics principles in a mean stream line analyses. In this approach, loss models have to be used to determine the entropy increase across each section in the turbine stage. Finally, the analysis an...

The aerodynamic performance improvement of radial impellers is positive significance to improve the overall hydrogen fuel cell systems (FCS). Our team proposes a multi-degree-of-freedom (MDOF) surface parameterization method for global automatic optimization impeller aerodynamics. MDOF characterized by fewer variables, construction ease, smoothness, good flexibility, and blade strength maintena...

In this article, the model of a 5 kW small wind turbine blade is developed and improved. Emphasis has been placed on improving blade’s efficiency aerodynamics selecting most optimal material for blade. The QBlade software was used to enhance chord twist. Also, new finite element using ANSYS analyze structure modal problems results presented von Mises stresses deformations three different materi...