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COVID-19 : Sneezing Simulation - scFLOW

COVID-19 : Sneezing Simulation - scFLOW

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Picture 1: CFD Result image from scFLOW
A lone developer from the corporate that provided aerodynamic analysis for the cars within the popular PlayStation game Gran Turismo has applied the tooling to demonstrate the spread of germs with and without wearing a mask during the continued COVID-19 pandemic.

When the Tokyo office block where MSC Software's Irie Tomohiro worked was hit by a confirmed case of COVID-19 in January, every company situated there was ordered home. At an equivalent time, a debate was starting to unfurl round the world about whether it had been prudent or not for the general public to wear face masks to slow the spread of germs.
At the turn of the 20th century, Japan was hit by an influenza outbreak that saw the primary mass adoption of surgical masks as a preventative tool. They still be used during other public health crises, including after earthquakes or in areas of high pollution.

Masks are useful in preventing the wearer from spreading germs to others. Now, in cities throughout east Asia, masks are even a standard fashion item.

Culturally, wearing them may be a total no-brainer. Baffled by the international response, Tomohiro began to prove that they are doing , in fact, help.
Video 1: Animation CFD result archieved from scFLOW


MSC
, which was bought by Hexagon in 2017, may be a computer-aided engineering simulation software and services firm. It specialises in creating simulations for designers and engineers to know how their products are getting to act within the real world: think digitally testing out a neighborhood of a vehicle to know if it's getting to work, without having to physically produce it.

A commercial piece of software called Cradle – which originated in Japan within the 1980s – was recently acquired by MSC. It helps simulate the core dynamics of fluid – also applicable to air or liquid, under the sector of computational fluid dynamics. Cradle was designed from the beginning to be easily employed by designers and engineers, unlike most simulation software, which was rooted in academia and highly complex naturally.

For Gran Turismo 6, it had been introduced for aerodynamic analysis to assist understand the drag factors on a car, or fuel efficiency, for instance , but also for fluid or thermal motion.

"Most traditional engineering software is sweet at block-y stuff, being technical," Keith Perrin of MSC Software tells Techworld."Look at the car or the mechanical components – it's all fairly prismatic."

Achieving sound organic models that accurately represent people are often a serious challenge. One traditional issue in developing for video games, for instance , is in allocating resources to modelling human hair – there's a huge amount of organic complexity that Perrin says is "orders of magnitudes harder" than traditional engineering.

But, given MSC and Cradle's history in working within healthcare (for example, CT scans and arterial flow) also as fluid modelling for clients operating clean rooms, like semiconductor fab plants, it wasn't "too much of a problem".

Nonetheless, Tomohiro's initial sneezing simulation – which appears short, sweet, and straightforward to the viewer – ran on 144 cores CPUs during a cloud environment and took an hour to run.

After producing three simulations, Tomohiro found that as distant as 2.4 metres – quite the recommended 2 metres in many nation's social distancing guidelines – will still give someone a "face filled with cough".

CFD Solutions: scFLOW

The new generation CFD software, scFLOW, has been developed to become the state-of-the-art tool with the breadth of new technologies and simple, practical features. The software is currently equipped with the new Solver with stability and three times faster calculation speed (at maximum) than before, as well as the new Preprocessor which helps entry-level users build complicated models and high-quality mesh. The software keeps on evolving.
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