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Chestermiller's latest activity
Chestermiller
reacted to
jack action's post
in the thread
Clarify power calculation
with
Like
.
No, you use half mass flow rate times velocity squared to get that answer. No, the "half mass times velocity squared" part is energy...
Wednesday, 7:50 AM
Chestermiller
replied to the thread
Experimenting whether the diameter of a pot affects boiling time for water
.
Where was the temperature measured in the experiments? Was the placement of the thermocouple consistent in all 3 cases (i.e., the same...
Monday, 6:18 AM
Chestermiller
replied to the thread
I
Fluid mechanics, Couette flow
.
In the direction parallel to the plate movement.
May 10, 2024
Chestermiller
replied to the thread
I
Fluid mechanics, Couette flow
.
In this case, you can use lubrication theory in which the plates are treated as "locally parallel", and in which. although over a period...
May 10, 2024
Chestermiller
replied to the thread
I
Efficiency of cycles bounded by two isotherms
.
Let ##dQ_H## be the differential increments of heat received by the engine during the heating part of the cycle, ##dQ_C## be the...
May 9, 2024
Chestermiller
replied to the thread
I
Fluid mechanics, Couette flow
.
Yes. But as long as the sinusoidal length period. is very large compared to the height of the channel, the vertical components of...
May 9, 2024
Chestermiller
replied to the thread
Adjusting the pressure of helium flow to account for smaller tube
.
The equation for the pressure gradient in the tube goes like: $$\frac{dP}{dz}=-\left(\frac{4}{D}\right)\left(\frac{1}{2}\rho...
May 3, 2024
Chestermiller
replied to the thread
Adjusting the pressure of helium flow to account for smaller tube
.
The viscosity of helium at 20 C is 0.0002 Poise and, at 2 bars gauge, its density from the ideal gas law is 0.492 gm/liter. So 15 LPM...
May 3, 2024
Chestermiller
reacted to
brandspanking new's post
in the thread
Adjusting the pressure of helium flow to account for smaller tube
with
Like
.
The sketch is correct, as are all assumptions less two: 1. The temperature is 70 F. 2. The length of the hose is only 1.5 meters...
May 3, 2024
Chestermiller
replied to the thread
Adjusting the pressure of helium flow to account for smaller tube
.
What is the mass flow rate at 2 bars?
May 3, 2024
Chestermiller
replied to the thread
B
Static pressure inside the glass of water
.
It doesn’t.
Apr 29, 2024
Chestermiller
replied to the thread
B
Static pressure inside the glass of water
.
Volume per unit mass, For an incompressible fluid,fhe equation of state is degenerate.
Apr 29, 2024
Chestermiller
replied to the thread
B
Static pressure inside the glass of water
.
Yes, but for a compressible fluid, the equation of state says that the pressure is independent of specific volume.
Apr 29, 2024
Chestermiller
replied to the thread
B
Static pressure inside the glass of water
.
All the equations you have written are the incompressible case.
Apr 29, 2024
Chestermiller
replied to the thread
B
Static pressure inside the glass of water
.
If you are considering the liquid water as incompressible. then its specific volume is independent of pressure, and the static pressure...
Apr 29, 2024
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