We are trying out a simple CFD model in MSC SCFLow of a simplified axial fan on a shaft sat within a cylinder. In order to determine the output velocity, is it worth having the fan rotate within the simulation with the boundary conditions on the flow input set to ambient with the speed of the...
If I had a cold trap cylinder that had a internal surface area of 1 meter squared, the trap material was stainless steel that was 10mm thick. The chiller was -60 degrees c on the outside of the trap. For argument sake, the material entering the trap is water vapor. How do I calculate the...
the flow is very slow at low pressure, correct. Don't worry about the bits in the way - yes they will have an affect but I'm not too concerned yet - until this works. The boiler is on one end - 200m away is a vac pump that pulls vapor through and is exhausted to the outside world.
The water pressure is roughly 20 bar at 200 degrees c. The pump on the end is a vac pump that pumps down to 0.001 mbar, and at this pressure the flowrate through the pump is 2 meters cubed per hour. If the boiler was isolated then the pump would be able to pull a good vac, albeit with some...
Okay the temp the boiler is being heated to is 200 degrees c. It is trace heated at 150 degrees. the pump at 200 meters away has a pump rate of 40 meters cubed per hour at atmospheric conditions and 2 meters cubed per hour at it's ultimate pumping pressure which is 0.001 mbar. The pump will...
Okay the temp the boiler is being heated to is 200 degrees c. It is trace heated at 150 degrees. the pump at 200 meters away has a pump rate of 40 meters cubed per hour at atmospheric conditions and 2 meters cubed per hour at it's ultimate pumping pressure which is 0.001 mbar. The pump will...
I have an interesting problem that a few of us in the office have been struggling with.
You have a simple water storage cylinder that is heated to produce steam. It flows through 4" pipework to a pump some 200 meters away and is then exhausted into atmosphere. Trying to work out what the...
I have an interesting problem that a few of us in the office have been struggling with.
You have a simple water storage cylinder that is heated to produce steam. It flows through 4" pipework to a pump some 200 meters away and is then exhausted into atmosphere. Trying to work out what the...
I have an oil filled systems that is free from air, and at atmospheric pressure. As the temperature of the surrounding environment changes, the oil expands and contracts. I have designed an expansion cylinder into the system that allows for this change in volume which is a cylinder that caps...
Yes it is to work out what the change in section of an o-ring would be when the environment goes cold and it's sealing onto a metal shaft. The o-ring guide lines also state that for approximation it can be assumed, in percentage, to be half the amount of stretch. An elongation of 1% corresponds...
I have a mathematical problem…
I’m trying to work out what the cross section of a Torus would be once it has been stretched over a shaft. So, for a given temperature the volume of the Torus would be the same no matter what amount of stretch you impart on the inside diameter. So the volume of a...
Hi all,
I'm about to start the manufacture of a large ceramic disc (263mm in diameter) which will currently be turned on a lathe. The disc has an inner bore as well a bit like a large scale polo mint. The bore diameter is around 95mm.
Can anybody tell me what they think the best geometrical...
