russ_watters's latest activity
-
russ_watters replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.I don't think anyone is saying it can't happen. -
russ_watters reacted to A.T.'s post in the thread Can a flow created by a fan show an Edge effect when hitting a wall? with
Like.
If you google "optimal placement wind turbine hill" or similar, you will find more information on exploiting obstacles to improve wind... -
russ_watters reacted to Baluncore's post in the thread Undergrad 20 Megapascals of negative pressure... What? Please explain with
Like.
I can see how, following cavity collapse, there can be a negative pressure transient of 20MPa, but that would be measured relative to... -
russ_watters replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.Agreed. I think that in certain specific/limited/contrived circumstances it is likely to be possible for a given small wind turbine to... -
russ_watters reacted to FactChecker's post in the thread Can a flow created by a fan show an Edge effect when hitting a wall? with
Like.
There are other things going on. Please try to understand Bernoulli's equation, which gives the trade-off between pressure and velocity. -
russ_watters reacted to 256bits's post in the thread Can a flow created by a fan show an Edge effect when hitting a wall? with
Like.
The streamline figures in post 27 can be somewhat deceiving at first glance. The streamline figure spacing is shown compressed, rather... -
russ_watters reacted to FactChecker's post in the thread Can a flow created by a fan show an Edge effect when hitting a wall? with
Like.
Yes. So that is where the velocity can come from -- decreased pressure. This just means that the random directional movement of atoms... -
russ_watters replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.Right. And these are forms of energy: kinetic energy increases, pressure energy decreases. That's the energy that gets traded from one... -
russ_watters replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.So then what does the equation say is going on? It can be overlooked if it's irrelevant to the topic we were discussing. -
russ_watters replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.I'd like for @T C to answer the question based on the incompressible flow form of Bernoulli's equation provided in Post #42. -
russ_watters replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.I don't think this is very useful for low flow velocity situations, where the temperature and density changes are negligible and... -
russ_watters replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.Those colors don't make any sense to me, given the streamline compression. & @256bits here's what AHRAE Fundamentals says (I'm trying... -
russ_watters replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.Please look at the standard form of Bernoulli's equation @FactChecker provided and tell us what you see the answer is. You've been... -
russ_watters reacted to FactChecker's post in the thread Can a flow created by a fan show an Edge effect when hitting a wall? with
Like.
That is a consequence in certain situations of Bernoulli's equation. It is not Bernoulli's equation. -
russ_watters reacted to 256bits's post in the thread Can a flow created by a fan show an Edge effect when hitting a wall? with
Like.
Is this your understanding if flow around a house, building, mostly low rise? The reference given in the post 17 shows that flow around...
