Why you should open your windows while eating Christmas dinner


Open your windows while eating Christmas food: Simulation shows how fresh air of coronovirus particles in the dining room is removed

  • Experts from Hexagon Manufacturing Intelligence in Japan followed
  • See what happens to particles taken out of the mouth of an infected person
  • Opening windows and doors to improve ventilation shows that there is a significant effect on the number of infectious particles in the room

A shocking new video reveals the risks people are having at Christmas dinner with a person living in another house.

It shows how a typical British dining room coronavirus virus gets out of someone’s mouth and infects other people.

Experts at Hexagon Manufacturing Intelligence in Japan constructed a model to show the level of risk that a heterogeneous person performs for others at a table.

Engineers hope that their simulation can help individuals and families evaluate the risk of mingling during the festive period.

The researchers worked on room dimensions of 4.9mx 3.7m (16 ft x 12 ft) and ran two versions of their simulations, one in which the room was closed with no ventilation (left) and the other with two windows and a door open. , Ten minutes each (correct)

The researchers worked on room dimensions of 4.9mx 3.7m (16 ft x 12 ft) and ran two versions of their simulations, one in which the room was closed with no ventilation and the other with two windows and a door open, each for ten minutes.

In the video, researchers map particles extracted from a person’s mouth during regular breathing and interactions.

This causes relatively greater diffusion of particles than coughing or sneezing.

Hexagon’s industry director Keith Perrin said that hexagon engineers in Japan created the simulation as a public education effort, helping executives and the general public understand how to protect themselves and each other from COVID-19 transmission Is the best way to.

‘Being Japanese, they were used to wear PPE when social disturbances and ill, so other approaches were understood.’

Radiators, heat from food and people are sitting around a dinner table, raising particles towards the ceiling, but if there is insufficient ventilation, they are left nowhere and forced to move around the room.

However, if there is adequate ventilation from open windows, the particles are sucked in almost immediately and away from the others.

‘Good ventilation is the key – just as many windows and doors are open as possible to help ensure air and particles do not build up,’ Mr Mr Perrin says.

In the video, researchers map particles extracted from a person's mouth during regular breathing and talking.  This causes relatively greater diffusion of particles than coughing or sneezing.

In the video, researchers map particles extracted from a person’s mouth during regular breathing and talking. This causes relatively greater diffusion of particles than coughing or sneezing.

Radiators, heat from food and people were sitting around the dinner table carrying particles towards the ceiling, but if there is insufficient ventilation they are nowhere to run and are forced to walk downstairs around the room Go.

Radiators, heat from food and people are sitting around the dinner table carrying particles towards the ceiling, but if there is insufficient ventilation they are nowhere to run and when returning and walking around the room Are forced

If there is adequate ventilation from open windows, infectious

If there is adequate ventilation from open windows, infectious particles are almost immediately ejected and kept away from others

Social disturbances are important regardless of ventilation in the room, but this is not a failure – uneven simulations show that the number of infected particles travels beyond the recommended distance of more than a minimum of 2 m, so the airflow in the room It is very important to have. It is important to maximize the effectiveness of social distinction.

‘However, at the end of the section, there are some elements comparing the effect of the open window.’

Based on their calculations, an infected person in an infected room can infect up to six other people.

However, in a ventilated average dining room, statistically no one else would be infected.

‘This simple effort results in a significant statistical change.

‘To give you some idea, during the three transmission iterations, assuming similar conditions, mathematically it infected 215 people!’ He says.

‘Our study suggests that it will not be a question of “if” transmission, it is a question of “when”. “

The team at Hexagon has used their expertise throughout the epidemic to show people how invisible droplets and aerosols can spread without people knowing.

One of his videos shows how it is better to stop a sneeze with an elbow, not to stop it, but can still endanger people nearby.

Another scene shows what can happen if a person does not wear a mask on a tube or train.

Going down a narrow corridor increases the risk of an infected person catching Kovid-19

Coronovirus particles extracted from a person’s exposed mouth in a tight spot can repel for several seconds, a study warns.

The discovery comes from computer simulations that show how particles behave as a person moves forward.

Swirling air and vortex allow particles to float in the air at waist height up to 16 feet (five meters) behind the infected person, causing significant problems for social disturbances and increasing the risk of infection for children. .

Researchers at the Chinese Academy of Sciences in Beijing, for example, used a 1.8m (5ft 11in) man moving at a speed of 1.5m / s (3.5mph).

He modeled what would happen if he coughed, without a face mask, both in open spaces and in a narrow corridor.

Previous studies have focused almost exclusively on the spread of infectious particles without any limitation. This new study investigated how particle behavior differs if they are physically suffering.

They found that when moving in confined spaces, air droplets carrying the deadly virus follow a specific pattern, known as ‘different modes’.

The particles in the computer visualization show are made up of currents of air behind a person as they move and a cloud of droplets separates from the body and forms a levitating drop of the infectious aerosol several feet behind the person.

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