NRI Dr Prakash
captured a dynamic approach to fluids by mathematics onto a software
Now Animated Beer Smooth To Pour - ‘Bubbling
and Frothing Liquids’
Clayton , Ausralia, Aug 5, 2007
Dr. A.Malhotra/Gary Singh
For the past 50 years, special effects in movies have always
had a problem: water drops are a consistent size. The one thing
that always tips a viewer off in old movies are water drops that
look huge next to scaled models.
Water looks fake and beer is even harder because of the bubbles
but computer animation is a $55 billion global industry so it's
only a matter of time before someone meets the challenge.
Dr Mahesh Prakash, CSIRO fluids researcher said:
- As you pour beer into a glass, you see bubbles appearing on
what are called nucleation sites, where the glass isn’t
quite smooth.
- The bubbles expand to a certain size then rise up in streams
to the surface, where they bump into each other and form a raft
of foam that floats on the top.
Dr. Prakash and along other reasearchers have captured the maths
describing these processes in software that allows movie makers,
film production houses and others to create super-realistic special
effects.
CSIRO and South Korea’s Electronics and Telecommunications
Research Institute, one of the world’s largest computer
graphics developers for games, with most of the research being
done in Melbourne have jointly undertaken the four-year project.
This project will bring the fluid animation software within reach
of smaller film production houses.
CSIRO and ETRI’s presentation, ‘Bubbling and Frothing
Liquids’, is part of a technical session on animating fluids
at the San Diego Convention Center on Thursday 9 August.
Dr Prakash is playing an important role in developing super-realistic
animations using maths, like making sure computer-generated waves
in movies look natural. His particular areas of focus include:
- digital content generation for fluid special effects in movies
and games
- geophysical flows, such as: dam collapses, tsunamis, volcanic
lava flow.
Dr Mahesh Prakash is part of a team of mathematicians and engineers
doing research in computational fluid dynamics (CFD) in CSIRO.
This team are regarded as world-leaders in discrete element modelling
(DEM) and smooth particle hydronyamics (SPH) – branches
of maths that are used to simulate and predict the movement of
fluids.
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CSIRO: the Commonwealth Scientific and Industrial Research Organisation,
is Australia's national science agency and one of the largest
and most diverse research agencies in the world.
Food Science Australia is a joint venture between CSIRO and the
Victorian Government that develops new ways of processing animal
products
CSIRO has developed finer and stronger wool that can be shaped
into yarn, fabric, garments and other products
Wool is now being used in medical, environmental and communications
applications
"Big Hollywood studios spend vast sums on single-use solutions
when they make blockbusters like 'Poseidon' and 'The Perfect Storm'
but we'd like our software to make realistic special effects easier
to come by," said Dingjan.
Dr Prakash together with co-researchers from ETRI will pour a
virtual glass of beer in San Diego next week at SIGGRAPH 07, the
world's largest computer graphics conference, to showcase their
innovative fluid special effects software.
Source: CSIRO Australia- news release issued by CSIRO Australia
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