Academic usage of COMSOL for student use has only begun in the last five years at USNA. Student involvement comes in four types, course-wide usage, focused course related work, student projects and semester-long research projects. A summary of how COMSOL has been successfully used at USNA will be given, showing examples of student work, with topics ranging from acoustics, fluid dynamics, pde so...

In this research (using induction furnace process) nodular iron with three different percentages of copper (residual, 0.5% and 1,2%) was obtained. Chemical analysis was performed by mass spectrometry and microstructures were characterized by Optical Microscopy (ASTM E3) and Scanning Electron Microscopy (SEM). The study of mechanical behavior was carried out in a mechanical test machine (ASTM E8...

We study the feasibility of fabricating an optical link for the SLHC ATLAS silicon tracker based on the current pixel optical link architecture. The electrical signals between the current pixel modules and the optical modules are transmitted via micro-twisted cables. The optical signals between the optical modules and the data acquisition system are transmitted via radiation-hard/low-bandwidth ...

n this essay, we present design and simulation of a Leakage detection and alocation of oil pipelines system using sensing the temperature distribution of optical fiber by COMSOL Multiphysics software. In this system, telecommunication single-mode optical fiber, 200 m typical length is used, in 1.55 μm electromagnetic wave. The proposed system, uses of Brillouin frequency shift occurred on fiber...

Abstract Fins are extended surfaces to increase convection heat transfer. Conventional fins made of solid metals and alloys. Liquid such as sodium have melting points below atmospheric temperature. lower specific heats higher thermal diffusivity when compared metals. These properties can be used in enhancing In the present work, a numerical model is developed for analyzing effect capsulating li...

Worldwide Interoperability for Microwave Access (WiMAX) is a new standard for highspeed wireless communication that covers wider area than that of Wireless Local Area Network (WLAN). In the WiMAX, the original data are first mapped on the symbols of Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), or 64 QAM, depending on the data speed. The complex numbers of the ...

Background and Objectives: Recently, photonic crystals have been considered as the basic structures for the realization of various optical devices for high speed optical communication. Methods: In this research, two dimensional photonic crystals are used for designing all optical logic gates. A photonic crystal structure with a triangular lattice is proposed for making NAND, XNOR, and OR optica...

Polymer solar cells are of tremendous interests due to their attractive properties such as flexibility, ease of fabrication, low materials and energy budget. However, organic materials have short exciton diffusion length and poor charge mobility, which can greatly decrease the performance of polymer solar cells. These challenges can be effectively overcome through the use of the bulk heterojunc...