- #1
Makarov
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I understand that in an ideal fluid, when the cross-sectional area of the pipe is increased, the pressure that the fluid exerts on the walls of the pipe also increases. Also, when the cross-sectional area of the pipe is decreased, the pressure that the fluid exerts on the walls of the pipe decreases.
However, I am a little confused as the how a non-ideal fluid works. Is it the other way around? When the radius of the pipe is decreased, the total peripheral resistance increases, and the pressure on the walls of the pipe rises?
The reason I am asking this question is because I am studying about the blood vessels of the body. Whenever the blood pressure rises, the body causes the vessels to dialate in order to counteract the increase in pressure and keep it constant. This seems to be contrary to what I want to think (increase in radius = increase in pressure). Is my conclusion about non-ideal fluids correct?
Thanks
However, I am a little confused as the how a non-ideal fluid works. Is it the other way around? When the radius of the pipe is decreased, the total peripheral resistance increases, and the pressure on the walls of the pipe rises?
The reason I am asking this question is because I am studying about the blood vessels of the body. Whenever the blood pressure rises, the body causes the vessels to dialate in order to counteract the increase in pressure and keep it constant. This seems to be contrary to what I want to think (increase in radius = increase in pressure). Is my conclusion about non-ideal fluids correct?
Thanks