Waves beneath all mathematics

Simulation of waves and the flame computer experts duk won Oscar for waves beneath all of mathematics

Http://www.thebeijingnews.com source: Beijing News release date: 2008-03-02

In Harry Potter and the Goblet ·, fee Quito using computer models to make those long gushing of flame.

The Star Wars Episode 3 of this classic lens, as a background of magma was the product of a computer simulation of production. A waves Lighthouse lens, vivid. This is the end of his charges. We all know weird Director Cohen brothers, funny actor Mathilda · Swinton took this year's Academy Awards, but do not know if there is a more "strange" people also took Oscar. 10 February, this year's Science Academy organized the ceremony, 10 science team were commended, one of the most outstanding winners at Stanford University, Assistant Professor, mathematics, mechanics and computer and chart expert lang · fee Quito (RonFedkiw).

Tech Oscar: beauty and the geeks

"The full name of SCI-Oscar" for "School of science and technology award" (TheScientific and Technical AcademyAwards), every year in advance of the Oscar award ceremony over 20 days.

This prize is dedicated to film technology has a special contribution (such as equipment, methods, formulas) inventor, you can tell it's history is the history of Hollywood film technology.

Then, the technical Oscar with Oscar "technology award" (such as the best visual effect), what's the difference?, best visual effects, such as the award winners are artists, nature and there is no difference between directors, actors, but a little "behind the scenes" some; and "the winner of the technical Oscar" is the real hero behind the scenes — they invented a gadget that Peter ·

Jackson and George Lucas · look so clever. Every year the "Oscar" awards in science and technology are science geeksand big party, in order for this award should not be too "Dim", United States of motion picture arts and Sciences will find a young actress when red, presided over the ceremony, the actress was Kate · Hudson, Scarlett · Jonson, this year is a small beautiful ABBA (JessicaAlba).

Already being gravest of ABBA quite a paunch.

She modestly said: "If there is no such award, my film" magic four-man law certainly is only the ' four-man '. "The evening of the first award of the" Ding Wensley lead to gum "inventor Ting Wensley, he invented the gum to the big screen on tattoo, silting, scars and wounds unit convenient" Christ "really" Thanks "for this kind of stuff.

This ceremony the greatest pleasure is to listen to the Hollywood glamour reading scientific terminology.

Maya fluid effects system developers of Doblin Smead said: "hear Abba said ' stable Lagrangian fluid flow ' really terrific."

This "technology Oscar" winner of the fee was born in 1975 in the end.

He has been listed as a pioneer in computer graphics, computer graphics of fluid simulation with outstanding contributions, he participated in over 20 films, which makes the most impressive is the Poseidon Adventure "waves," Star Wars 3 of magma and Harry Potter and the Goblet · "Dragon fire.

However, what is the "computer graphics simulation", duk-what made tremendous contributions?

Mathematics first, graphics later station

The so-called computer graphics simulation with computer simulation of real-life objects shape and movement.

For example, in the Poseidon Adventure "impact large boats, waves, said to be" computer animation ", but certainly not with the computer flashing pictures but advance given water and big ship physical model and the initial conditions, then the computer automatically calculates the surge of shapes, as well as it and ship collision process.

So, in t

he end must be a nutsy graphics? just isn't. He said: "the graphics itself not very important, so many of my students until the second or third year begins on the first section of the graphics class. I started to study computer graphics time rather late, to a 23-year-old science of pure mathematics until, after engaging in applied mathematics. Prior to 1998, I don't know anything about computer graphics. ”

1996 annual fee Quito in UCLA got a PhD in mathematics, and later completed a post-doctoral thesis of the school of mathematics and the California Institute of technology of Aeronautics doctoral thesis.

In 1998, he started the company for industrial light and Magic (ILM Magic, Industriallight &), this is Lucas was founded in 1975 by a movie special effects company. In 2000 he entered Stanford University Computer Science Institute, began specializing in computer graphics. In 2001, he gave the annual SIGGRAPH computer image gathering wrote two papers. In 2005, he was awarded the SIGGRAPH "highlights new researchers Award".

In fact, those of waves on the screen is from the air,

Shipbuilding industry on fluid dynamics research results, and the basis is the mathematical fluid mechanics. Through the use of computer simulation of physical phenomena, physicists can observe some theory, or predictions of some objects under specific conditions. While these results if applied to a movie, will undoubtedly bring another world audience. Fee Quito said: "many of my work is about fluid and solid simulation calculation method, as it turns out, this film is very useful on the same. In reality the mathematical tools in shipbuilding, used to make a ship sank in the screen is also very useful. ”

Fee Quito and colleagues developed a system to a better simulation of water, fire and smoke movement, he says now he work of the focus is on people, solid and fluid coupling, hoping to imitated in swimming.

To d

ate, the fee had been involved in Quito for approximately 20 movie special effects production. However, in his opinion, it's not perfect. His ability and his perfectionism spirit often can find a flaw in the simulation, he said: "Unfortunately, I know (analog) for all remaining issues, such as the Poseidon Adventure" in the waves, which I often think back to ... The good news is that the audience is like. "

In the end own fees is not a cold computer, young and beautiful presentation of female guests, Abba would make him a "biological response of the body."

He said: "the distance of the world's most beautiful woman, only 10 feet, this is really great. ”

This version of the author/reporter Liu Zheng

Fee's engineers engaged in a?

The following is the fee for Quito engaged in a number of projects, through them, we can learn more about this special film on the work of scientists:

"Bi-directional coupling of solid and liquid particle simulation calculations."

This thing sounds like a person, is not difficult to understand, for example, in the sea, with waves Lighthouse will use the simulation.

"Deformable solid and non-deformation of solids mixing simulation".

This sounds like it or not, but in fact, this thing is common, for example, a dyed-in-the-wool child bulian, hanging above the inveterate child move, also followed. bulian

"Casual cut tetrahedral mesh" — this easy to understand, like Sky hanging a radish, a swordsman looks to cut several knives, radish chunked fall off.

We will which movies have inadvertently will use computer simulation of fee duk-what is deemed to be a real scene? you can refine the search for the following films: "the Pirates of the Caribbean series, after the Star Wars 3", "Harry Potter" series ·

"," Terminator 3, "" Poseidon "," Transformers "...

How to make waves lighthouse?

Okay, now let's imagine that you want to simulate a wave-washed Lighthouse scene, you need to solve any problem in mathematics?

First of all, come from the lighthouse behind Chung, is water wave waves of conduction, circular movement of water molecules.

Wavy side movement, change shape. This is necessary to establish a complex mathematical model.

Top of the water because the movement of inertia and gravity to overcome water surface tension and viscous, wave surface will keep crushing, forming a white edge and droplets, which are more complex mathematical models.

The sea and Lighthouse collided, the water will be split, waves change shape.

The waves are bounced and the subsequent waves collide, forming more broken surface and chain reaction. And across the water forms the lighthouse Vortex, influence the surrounding seawater.

Also some of the water because the adhesive effect stick lighthouse, affecting its color and gravity effect.

This process is complex.

However, fees, and the special Web site, we can see the computer generated image of sweeping lighthouse, absolutely realistic motion is like a camera lens, but relatively rough surface texture will tell you it is "not true". This is the mathematical magic.