Drag Reduction in Ships Using Micro bubbles Technology Abstract: Drag is a mechanical force which is generated with a solid object that is moving through a fluid. There should be movement between the object and the fluid. Drag acts in opposite direction to the direction of motion of the body.

When a body is moving then it experiences a drag force and it usually has two components, frictional drag which is called viscous drag and pressure drag which is called form drag or profile drag.

Frictional drag is generated with friction between th ....etc

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Presented by:
Professor Chaim N. Sukenik

Abstract

Reaction chemistry at ordered interfaces; patterning nanoscale assemblies;
monolayers as ultra-thin barrier layers on metals, alloys and polymer composites; surface modification to control biocompatibity; ceramic thin films.

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This article is presented by:Germano Gon alves Capela, Nuno Pessanha Santos, Jo o Marques Vieira, C sar Bastos Monsanto
Escola Naval
Departamento de Armas e Electr nica

INTRODUCTION

The genesis of this work is the interest of the Portuguese Navy in measuring physical parameters over long distances, as the result of an impact of a missile in a naval platform. The analysis of those parameters may provide information about the effects of the impact ....etc

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1. INTRODUCTION
Drag is a mechanical force generated by a solid object moving through a fluid. For drag to be generated, the solid body must be in contact with the fluid. If there is no fluid, there is no drag. Drag is generated by the difference in velocity between the solid object and the fluid. There must be motion between the object and the fluid. If there is no motion, there is no drag. Drag acts in the direction opposite to the direction of motion of the body.
A body moving through a fluid experiences a ....etc

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advantages and disadvantages of use of micro bubbles in ship ....etc

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ABSTRACT
Drag is a mechanical force generated by a solid object moving through a fluid. For drag to be generated, the solid body must be in contact with the fluid. Drag is generated by the difference in velocity between the solid object and the fluid. Drag acts in the direction opposite to the direction of motion of the body.
Microbubbles is a drag reduction device that reduces skin friction of a solid body moving in water by injecting small bubbles into the turbulent boundary layer developing on the s ....etc

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