Viscous Fluid flow as a circuit. Who came up with this?

[Lostintime]

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If blood is flowing through a blood vessel, I read to consider the blood flow as a circuit because bernoulli's equation does not apply with viscous fluids.

So.... V=IR
I=Flow Rate
R= viscosity
V= The change in pressure between the beginning and the end.


With a circulatory system, dilation of vessels = less pressure.

So... When delta P is constant, V is constant. When the blood vessels dilate, flow rate (I) increases. Hence R, the viscosity forces, decreases.

How does this equate to lower pressure?
This concept does not include pressure, only difference in pressure.

 

[FutureDoc2]

If blood is flowing through a blood vessel, I read to consider the blood flow as a circuit because bernoulli's equation does not apply with viscous fluids.

So.... V=IR
I=Flow Rate
R= viscosity
V= The change in pressure between the beginning and the end.


With a circulatory system, dilation of vessels = less pressure.

So... When delta P is constant, V is constant. When the blood vessels dilate, flow rate (I) increases. Hence R, the viscosity forces, decreases.

How does this equate to lower pressure?
This concept does not include pressure, only difference in pressure.

Well I am going to take a stab at this.lol Given the equation above and the equation for pressure (P= F/A), I am going to try to make this as conceptual as possible. If the blood vessels dilate, meaning vasodilation, this refers to the widening of the blood vessels causing the flow rate to increase. Because the blood vessels are widening, this means the surface area is increasing. After manipulating the equation for pressure- if A goes up, P goes down. So in short, widen the blood vessel, increase the flow rate, increase the area, and decrease the pressure. Does this make sense?!