Thanks for the replies. To answer berkeman's questions:
The pouch will be compressed by a pressurized gas and a valve will be used to release small amounts at a time. This will be done automatically so no one is handling it and it will be in a sealed container. Refilling will take place...
For my job I want to design a system that will have a bladder for containing and dispensing liquid ammonia, and I am trying to determine the ideal material/product that I could use. It will be fairly small, holding approximately 100g of liquid ammonia.
I am envisioning a bag/pouch with a tube...
Thank you, this is very helpful. Would you happen to know of any sources that may provide this information?
Would you expect the carbon-carbon composites to be ineffective at containing any gas? Do you know of any coatings that can be applied (at very high temperatures ~3000K) that may work?
I am attempting to find information about the permeation of hydrogen through carbon fiber reinforced carbon composites and was wondering if anyone could provide some help. I don't have many details to provide. We are in the early stages of a research project in which hydrogen may be flowing...
I have a quick question about what is generally expected during an interview for a position in industry when you have a PhD. When applying for my first industry job out of grad school I gave a presentation about my work as a PhD candidate during the interview. Is this sort of presentation...
As boneh3ad pointed out you need viscosity so you need shear flow (velocity gradient). This can occur without a boundary layer. For example a jet of air at high speed relative to the surrounding air. Shear is generated in the atmosphere all the time due to gradients in the wind velocity which...
I attempted to read some of it although as others have pointed out it is quite difficult. In addition to randomly, and pointlessly, discussing the origins of life he also talks about “universal background matter” and “universal background energy”.
It’s not even entirely clear to me what the...
By using a large rotor and a small rotor, a dual-rotor design can be superior to a single rotor.The blades of most modern turbines are very large and as a result the inner section of the blade is optimized for structure, not aerodynamics. There is energy in the wind that is not being extracted...
The acceleration in time is not the only reason Poiseuille's equation does not apply here. The flow also develops in the axial direction due to the no-slip boundary condition at the pipe walls. As the flow begins to accelerate from rest, initially only the fluid near the wall is slowed down by...
The direction of lift and drag are defined relevative the local flow and this changes along the blade. The local freestream direction and speed depend on the wing and the rotational velocity of the turbine. As you move along the blade the exact direction of these forces will change. On a turbine...
The author means that the low momentum fluid is transported away from the surface and replaced by fluid with more momentum that came from above the surface.
I don't think anything in this post makes any sense.
Pressure is lower on the top of the airfoil not higher. The streamlines get closer together as a result of mass conservation. And the streamlines being closer together is not an indication of compressibility.
What net effect?
What do you...
The flow in the video above is incompressible.
No one is saying anything about the flow not being turbulent. There is clearly turbulence in the wake of the airfoil due to trailing edge separation.