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centrifugal compressor torque negative - using cfx for simulation |
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July 2, 2018, 05:45
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centrifugal compressor torque negative - using cfx for simulation
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#1 |
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New Member
limlibin
Join Date: Jun 2018
Posts: 11
Rep Power: 7  |
Hi everyone,
I had setting Inlet: Total Temperature: 300K; Total Pressure:1atm Outlet: Static Pressure 1.9atm Rotational Speed: -60000rpm I had found that my torque is negative. What condition should i setting of exchange? pic7.jpg pic8.jpg |
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July 2, 2018, 07:06
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#2 |
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Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,705
Rep Power: 143 |
Make sure you understand the negative torque - what axis is it defined from? Negative torque could mean in the direction of rotation or against the direction of rotation depending on the definition.
Assuming it is in the same direction as the direction of rotation: Then the rotor wants to run at a faster speed and is trying to accelerate. The steady state speed will be faster than the speed you simulated.
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