When using rotating regions and rotating in one direction, does that simulate the object rotating in that direction that we are studying, or the fluid itself? When studying boat propellers in my ME course, I am tasked with simulating the former, and I'm unsure which direction I should rotate the region to achieve thrust? When I rotate into the fins, it provides thrust, but when I rotate the opposite direction it provides forward thrust, am I to assume that the rotating region direction describes the direction you want the part to rotate even though you're applying it to a basic cylinder?
EXCELLENT (no issues with sound or comprehension here!) I am assuming that, for a VAWT (with flow perpendicular to the rotating region axis!): Stage 1, the VIRTUAL WIND TUNNEL height/width (or diameter) should be at least 5x the rotational diameter (and blade height or length!) I further assume that Stage 1, would commence with a steady state flow of at least: a)the (geographic) average wind speed or b)the peak wind speed that you are intending that the VAWT and generator would continue to operate at? Any advise much appreciated!
Great tutorial, it really helps me to better understand the simulations process. I am wondering (probably yes) if it is possible to find out the RPM that a fan (or wind turbine) can obtain VS the wind speed.
I am trying to make a simulation of archimedes screw inside of a water tight housing, but no matter what i try the solver gets abnormally terminated and i cant get any results
I am trying to simulate a turbine, however there are some results that I do not understand. For w = 0 of the rotating region, the torque has a negative result at x, but when w = 100 increases, the torque tends to positive infinity. Could you explain a little more? I need to calculate the maximum power based on w.
You seem to be pulling the torque values from Flow Simulation correctly. Now, you’re saying torque tends to positive infinity as you increase the RPM. Technically this is sort of true, except the blades would break before we ever got close to infinite torque. For a specific turbine example, a customer has had the limitation of sub-mach speeds. The tips of the blades approach Mach 1 but do not surpass it. In that case, we measure maximum velocity in the system. You likely have a similar limitation in your turbine. Please determine that limitation and use it to determine maximum angular velocity.
Check what other things you have turned on in the Analysis or Fluids tabs. Rotation is not valid High Mach flows, for example. Turn off all other checkboxes and see if Rotation reappears. If it’s still missing you may have a bad install and should try an uninstall / reinstall. If you continue to have trouble, reach out to your local reseller or the community on the SOLIDWORKS forums.
Really it's awesome topic but i have a small note to consider : If you make the rotating region built in the assembly and u wanted to surface plot any parameter like torque it will be invalid process due to the flow region that the flow region wont reach the blades so that i strongly recommend that u make the rotating region not built in the machine assembly file to get results
Hi, I am new in Solidworks so I was wondering if you could tell me how to create the initial layout with the turbine in the middle and the tube.I have the tube, I have the turbine but how do I put the turbine in the middle?Thank you very much
I am running a similar case but I am getting some reverse flow and vortices near walls of the cylinder. Any pointers on tackling this?
I have a query regarding torque. Is there any specific reason to select only the back faces for the torque calculation vs the entire fan?
When defining the faces for the Torque surface goal, do you choose both faces of each blade or just one face? Which?
I cleared my many doubts. Thanks for explaining this topic
When using rotating regions and rotating in one direction, does that simulate the object rotating in that direction that we are studying, or the fluid itself?
When studying boat propellers in my ME course, I am tasked with simulating the former, and I'm unsure which direction I should rotate the region to achieve thrust?
When I rotate into the fins, it provides thrust, but when I rotate the opposite direction it provides forward thrust, am I to assume that the rotating region direction describes the direction you want the part to rotate even though you're applying it to a basic cylinder?
EXCELLENT (no issues with sound or comprehension here!)
I am assuming that, for a VAWT (with flow perpendicular to the rotating region axis!):
Stage 1, the VIRTUAL WIND TUNNEL height/width (or diameter) should be at least 5x the rotational diameter (and blade height or length!) I further assume that
Stage 1, would commence with a steady state flow of at least:
a)the (geographic) average wind speed or
b)the peak wind speed that you are intending that the VAWT and generator would continue to operate at?
Any advise much appreciated!
Great tutorial, it really helps me to better understand the simulations process. I am wondering (probably yes) if it is possible to find out the RPM that a fan (or wind turbine) can obtain VS the wind speed.
I am trying to make a simulation of archimedes screw inside of a water tight housing, but no matter what i try the solver gets abnormally terminated and i cant get any results
th-cam.com/video/fRyUf-GY754/w-d-xo.html .
I am trying to simulate a turbine, however there are some results that I do not understand.
For w = 0 of the rotating region, the torque has a negative result at x, but when w = 100 increases, the torque tends to positive infinity.
Could you explain a little more? I need to calculate the maximum power based on w.
You seem to be pulling the torque values from Flow Simulation correctly. Now, you’re saying torque tends to positive infinity as you increase the RPM. Technically this is sort of true, except the blades would break before we ever got close to infinite torque. For a specific turbine example, a customer has had the limitation of sub-mach speeds. The tips of the blades approach Mach 1 but do not surpass it. In that case, we measure maximum velocity in the system. You likely have a similar limitation in your turbine. Please determine that limitation and use it to determine maximum angular velocity.
*How do we create a rotating region inside another rotating region?*
Regions cannot overlap, so you could in the right case create nested regions but it would have to be just right to work.
Hello, i do not have rotation in the Analysis tab in the wizard for flow simulation. Are you able provide help please
Check what other things you have turned on in the Analysis or Fluids tabs. Rotation is not valid High Mach flows, for example. Turn off all other checkboxes and see if Rotation reappears. If it’s still missing you may have a bad install and should try an uninstall / reinstall.
If you continue to have trouble, reach out to your local reseller or the community on the SOLIDWORKS forums.
Very useful. Thanks
Glad it was helpful!
Really it's awesome topic but i have a small note to consider :
If you make the rotating region built in the assembly and u wanted to surface plot any parameter like torque it will be invalid process due to the flow region that the flow region wont reach the blades so that i strongly recommend that u make the rotating region not built in the machine assembly file to get results
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Very useful video.
Glad it was helpful!
Very good explanation, unfortunately muffled sound quality.
Awesome video, Thank you. plz share the link where you downloaded that fan.
Hi, I am new in Solidworks so I was wondering if you could tell me how to create the initial layout with the turbine in the middle and the tube.I have the tube, I have the turbine but how do I put the turbine in the middle?Thank you very much
th-cam.com/video/fRyUf-GY754/w-d-xo.html .