Hi all
I 'd wanna to simulate the humidity in a room if there is some rainwater entering through the shutter(or a window). My question is how can I set the fulid of rainwater in FLOW SIMULATION. Suppose we have already known the speed of the rainwater.
Thanks all!
Petrel Yang
It wont be that simple. Flow simulation is exactly what it suggests a simulation of the flow. Rainwater coming into a room will not raise the humidity proportionally to the mass of water entering the room. Some will collect on the ground, some will evaporate into the air and I think if the room was at a transition point the water coming in could actually remove humidity from the air.
I agree with your piont. The situation is complicated. Is there any methord to deal with this condition Or simplify this condition?
Thanks.
Petrel,
Flow will not solve for two phase flow which is inferred by the effect of rain droplets on the water vapor concentration in air in a room. However, Flow may yield the flow of air in the room that is induced by the raindrops when defining the raindrops as a particle. I say "may" because particle flows in Flow are assumed to not have any effect upon the fluid that they are flowing in. But I am using Flow 2009 and there may have been improvements to this in more recent versions??
Proprietary programs that deal with the psychrometric properties of air do exist that will predict results similar to those that you are looking for. Examples would be rating programs for cooling towers and evaporative condensers. You might find good references at www.ashrae.org. But you would have to adopt the principles to your own problem.
Hi David
Thank you very much. I will have a try.
create an opening and apply a mass flow rate of air with 100% humidity perhaps??
anyway flow simulation is not supposed to perform such calculations if I remeber well.
Best regards