Today @UKFluidsNetwork and @FluidsLeeds launched a new report looking at the importance of fluid dynamics in the UK and how we can support the next advances in this diverse discipline.
A short thread on the conclusions 1/
Fluid dynamics is everywhere – the air we breathe, water we drink, products we use. Fluid dynamics is an enabling technology for a vast number of industries 2/
Fluid dynamics contributes over £13.9billion annually to the UK economy. Industries which rely ofn fluid dynamics have a total output of over £200 billion. 3/
A Sunday thread on ventilation metrics and exposure as they are not quite as straightforward as you may think 1/
Under steady state conditions (ie people have been in the space for a while and the ventilation is constant) then concentration in the air of anything that remains airborne (CO2, the smallest virus particles) is emission rate divided by total ventilation rate 2/
The total ventilation rate is the total volume of fresh air provided to the room, which is normally measured in m3/s, l/min or a similar metric. You can also get this from the ventilation rate per person (l/s/p) multiplied by the number of people 3/
A thread today about windows and ventilation, and some things you can do to make the most of your windows for comfort and infection risk 1/
First, you will probably use them differently at different times of the year and in different weather conditions. That’s because natural ventilation works in two ways 2/
Wind driven ventilation uses wind blowing onto a building to create a pressure difference across a building. This difference in pressure moves air into and through the building. 3/
Now more business are going to have more people in them ventilation becomes an even more important mitigation strategy
You can use CO2 monitoring to help.
Here's another thread that may be useful if you are looking to use CO2 1/
You use a CO2 monitor for a short period to check the ventilation in an occupied space. This would often be done by facilities management and is a good check in regularly occupied spaces with constant mechanical ventilation 2/
You can also have a monitor displaying all the time and use it to actively manage the ventilation – this is good where you have opening windows or other controls that people in the room can use 3/