A fin is a surface that extends from an object to increase the rate of heat transfer or environment for enhancing convection. The performance engine cylinder investigated in this study using geometries with various extensions, including rectangular, trapezium, and triangular segmental extensions. These are compared fins without extension showed 5-13% rate. primary idea behind adding extensions ...

Calculation of fin efficiency is necessary for the design heat exchangers. This can be calculated individual finned tubes or continuous fins. Continuous fins are mostly used in plate-fin and tube exchangers (PFTHEs). In most cases, basic elements those PFTHEs circular, oval flattened pipes, which contain circular polygonal fins, as observed PFTHEs, divided into virtual Those have a rectangular ...

In this paper, Wavelet Collocation Method has been used to solve nonlinear fin problem with temperature dependent thermal conductivity and heat transfer coefficient. Thermal conductivity of fin materials varies any type so that we consider thermal conductivity as the general function of temperature.  Here we consider three particular cases, where we assume that thermal conductivity is constant,...

The maneuverability demonstrated by the weakly electric ghost knifefish (Apteronotus albifrons) is a result of its highly flexible ribbon-like anal fin, which extends nearly three-quarters the length of its body and is composed of approximately 150 individual fin rays. To understand how movement of the anal fin controls locomotion we examined kinematics of the whole fin, as well as selected ind...

A computational study of fish fin hydrodynamics is being conducted concurrently with experimental analysis. The presence of a complex shaped moving boundary makes this a difficult proposition for computational fluid dynamics and here we use a Cartesian grid based immersed boundary solver designed to handle such flows in all their complexity. High resolution, high speed video of fish fin movemen...