Description:
A flow visualisation of the interaction between human respiration and heat plume. In a still room with ambient temperature of 24 degrees and skin temperature of 32 degrees, bouyancy forces drives natural convection (Boussinesq approximation). A heat plume is produced and a person becomes a 'candle' which is undetected with a naked eye. The exhaled air of 0.4ms^-1 pushes the thermal boundary layer outwards before being convected into the plume.
The Boussinesq approximation only applies if β(T - T0) << 1. A temperature difference (air) of 15 degrees will only result in 1% error.
Name: Chan Chi Hin
Institution: Imperial College, London
Software: SimScale
This is interesting to know about 'Human Candle'. I initially thought of submitting a case of Natural convection using NING's Hot 'N' contained in the Square Box as shown in the Company Logo. The beauty of doing so is that you can get two vortices sitting in the top and bottom Triangles of 'N'. I think it could look artistic
Hi Chi Hin,
Thanks for the submission. Appreciate if you could remove the contour legend and axis and re-submit the figure please? The intention is to have it like a art piece. Thanks.