Optimal Cross-Sectional Shape of Gas/Air Ducts

Numerical Optimization of the Cross-sectional Shape of Turbine Blades

Industrial turbomachinery design requires fast and reliable algorithms for the numerical optimization of design parameters that innuence the ow in the turbomachine. The problem considered in this paper is to determine the cross-sectional shape of a blade in a turbomachine in order to reproduce as well as possible a given velocity proole of the ow around the blade. It is formulated as a least sq...

3d Cross-sectional Shape Measurement of the Foot While Walking

PRINCIPLE Most of the existing 3D shape measurement systems use laser scanning[2], and requires a time (several seconds, typically) for measurement. The principle of laser scanning measurement is triangulation between camera and laser projector. In the field of computer vision, 3D shape of the target object is reconstructed from multiple images using triangulation between multiple cameras (ster...

Effects of Cross Sectional Shape and Confining Material

Flying snakes: Aerodynamics of body cross-sectional shape

Chrysopelea paradisi, also known as the flying snake, possesses one of the most unique forms of aerial locomotion found in nature, using its entire body as a dynamic lifting surface without the use of wings or membranes. Unlike other airborne creatures, this species lacks appendages to aid in controlling its flight trajectory and producing lift. The snake exhibits exception gliding and maneuver...

Local Orthogonal Mappings and Operator Formulation for Varying Cross-sectional Ducts

A method is developed for solving the two dimensional Helmholtz equation in a duct with varying cross-section region bounded by a curved top and flat bottom, having one region inside. To compute the propagation of sound waves in a curved duct with a curved internal interface is difficult problem. One method is to transform the wave equation into a solvable form and making the curved interface p...