jueves, 16 de octubre de 2008

Quimica, Chemical: Designed the swimsuit world's fastest

In its design has been applied computational fluid dynamics
Using computational fluid dynamics or CFD, a team of engineers from the University of Nottingham, in England, has designed the swimwear world's fastest, up from different tissues depending on the areas of lesser or greater friction. The company Speedo, which has participated in the investigation, has applied techniques NASA and other international research institutes, as well as ANSYS, a global leader in providing simulation software for design, to create this new swimwear , Which had already been beaten three of the world speed records. For Martinez Yaiza. A technical modelling highly specialized computer, developed at the University of Nottingham, in England, has been used in the design of the swimsuit fastest in the world. Professor Herve Morvan, of the School of Mechanical, Materials and Manufacturing Engineering of the university, has participated as counsel for the department AQUALAB development and research company Speedo, which specialises in the manufacture and design swimsuits competition. The result: LZR Racer trunks with which, as reported by Speedo, have already been beaten three of the world speed records.

Fluids and informatics
The University of Nottingham published in a communique that Speedo has applied techniques NASA and other international research institutes, as well as industrial partners such as ANSYS, a global leader in providing simulation software for design, to create this new trunks.

Specifically, Morvan and his team have been charged with computer models of fluid flow, in this case water around the body of swimmers. Morvan specializes in computational fluid dynamics (CFD), with experience in quantitative techniques, physics and fluid turbulence chemically reactive, particularly in the context of environment and water flows of air.

The computational fluid dynamics or CFD is a branch of fluid mechanics that applies numerical methods and algorithms to analyze and solve problems related to the flow of fluids.

Computers are used to perform millions of calculations that are required to simulate the interaction of fluids and gases with the complex surfaces used in the design.
The CFD technology is commonly used in the aeronautics industry and other sectors related applications or biomedical sports. In the case of this design swimwear, Speedo in AQUALAB of engineers examined 400 athletes and explored a number of prominent athletes.


The physical fabric and carried to the supplements
Using the CFD analysis, Morvan and his team were able to identify areas of the body of athletes that occurred in greater friction with the water for swimming.
With this data, designers could locate in the trunks of low-friction fabric, developed by Speedo, in the most convenient. According Morvan, thanks to the computational fluid dynamics, has been able to create a swimwear that produces a 5% less resistance to contact with water than the previous one created by Speedo swimwear in 2007, the FS Pro, with which the swimmers exceeded 21 world records.
As accompaniment to this design, in addition, the company has created a pair of eyeglasses (the Sidewinder and Aquasocket), covered with thermoplastic rubber, and a hat (Aqua-V ™) especially for swimming races.
For this design was also used CFD technology, as reported by Speedo, in order to identify areas of greatest resistance around the eyes and the head of swimmers.
Subsequently, silicone is used differently depending on the density strength of each area: a density thicker at the top of the hat to reduce wrinkles, a density finest in the middle section to allow the cap be extended and coupling better, and a section at the base around the birth of hair that provides a stable and ergonomic adjustment.

Overcoming resistance

According Swimming Online, when a swimmer moves in the water are three types of resistance: resistance form or pressure, the resistance by waves (when the body moves between water and air) resistance and friction.
The pressure resistance is the most important of the three, and is because swimming is generated during a gradient of pressure that impedes the progress of the body. This is mainly because the water stops flowing LAMINAR, appearing turbulent flows. The frictional resistance, but is less important, is that more has revolutionized the aesthetics of swimmers with the development of full-body bathing suits.
The bathing suits that mimic shark skin currently exists to reduce this resistance by nearly 8% thanks to the so-called "Riblet effect", which is the effect produced by dentículos icroscópicos of shark skin on contact with water, causing the vertical vortex or spirals of water, allowing it to maintain near the surface, thereby avoiding the appearance of areas of low pressure and turbulent flows.
The new Speedo swimwear, has a fabric that even goes beyond that of previous products of the same brand (of the saga "FastSkin" imitators of the shark skin), known as LZR Pulse, which repels water and reduces vibration of muscle and skin through a careful compression.

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