Here's an excrutiatingly dumb question regarding papers on cfd for modelling. The ceiling mounted is the best, but what is unclear to me is a) if it's a _major_ increase (since the absolute values of the concentrations of every placement is small relative to no uvc) b) why it is the best. it is because this particular geometry just happens to maximise the intensity-weighed surface area for the space? In that case, im not sure how well this is generalisable to different spaces.sorry if the questions are so dumb!!! c) and finally - the dumbest question of all. here's a reduced order model I was thinking of: the graph above looks suspiciously like the below, where C_0 and C_infty are functions of a) ventilation rate b) fluence in the breathing zone and c) size of room?. do we expect k in the equation below to be the same k / susceptbility parameter in the papers? if so wouldn't this be a candidate for a first order model (edited)