The most PCMs with high energy storage density have an unacceptably low heat conductivity and hence internal heat transfer enhancement techniques such as fins or other metal structures are required in latent heat thermal storage (LHTS) applications. Previous work has concentrated on numerical and experimental examination in determining the influence of the fins in melting phase change material....

Teleosts have an asymmetrical caudal fin skeleton formed by the upward bending of the caudal-most portion of the body axis, the ural region. This homocercal type of caudal fin ensures powerful and complex locomotion and is regarded as one of the most important innovations for teleosts during adaptive radiation in an aquatic environment. However, the mechanisms that create asymmetric caudal fin ...

A directional solidification experiment of a Ti–Al–Nb–B–C alloy by power down method is simulated using a Bridgman furnace front tracking model. The effect of varying the dendritic growth parameters; C, the columnar dendrite growth coefficient, and n, the undercooling exponent, is investigated. A matrix of growth coefficients and undercooling exponents at three levels each, based around a growt...

a series of two experiments was conducted to study the optimum dietary protein level and protein to energy ratio of lemon fin barb hybrid larvae. in experiment 1, five isocaloric diets (4700 kcal per kg) ranging from 40 to 60% protein in 5% increments were fed to triplicate groups of lemon fin barb hybrid larvae (initial weight: 0.10 ± 0.01 mg per fish) for 21 days. weight gain of fish was prop...

Five new fish species of the genus Hemibrycon are described from the Río Magdalena basin, Colombia, using morphometric, meristic and osteological characters. Hemibrycon paez (n=40) differs in number of lateral line scales (39 to 42 vs. 43 to 54), by the number of scales between lateral line and anal-fin origin (6 to 7 vs. 4 to 5) and between lateral line and dorsal-fin origin (6 to 7 vs. 8); H....

When the Gibbs-Thomson-Herring anisotropic capillary boundary condition is applied at the solidliquid interface of a crystallite with shape anisotropy, such as a needle crystal or dendrite, the interface can develop periodic non-monotone temperature distributions. This surprising result was discovered recently for the case of a slender ellipsoidal crystallite with its solid-melt interfacial ene...

Modern aeroengines employ labyrinth seal systems to the clearance between blade tip and surrounding engine casing. Understanding of wear mechanism fins abradable coatings on casing is necessary help aeroengine achieve higher efficiency. In this study, multiple tests with different types fin geometries are conducted a high-speed test rig speed 100m/s. Two motorized stages used simulate axial mov...