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crosspowerlaw nu0 and nuinf, which is bigger? |
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January 6, 2013, 04:17 |
crosspowerlaw nu0 and nuinf, which is bigger?
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#1 | |
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Beijing, China
Posts: 838
Rep Power: 17 |
return (nu0_ - nuInf_)/(scalar(1) + pow(m_*strainRate(), n_)) + nuInf_;
According to this, nu0 is the kinematic viscosity when the stress rate tends to zero. and nuinf is the one that the stress rate tends to infinate. Quote:
but in the tutorial case is opposite. Last edited by sharonyue; January 6, 2013 at 04:53. |
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January 6, 2013, 04:59 |
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#2 |
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Beijing, China
Posts: 838
Rep Power: 17 |
Maybe I figure it out, in this case n>3 which indicate its Shear thickening. I will validate it soon.
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January 17, 2013, 08:35 |
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#4 |
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Beijing, China
Posts: 838
Rep Power: 17 |
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March 7, 2013, 02:49 |
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#5 |
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Beijing, China
Posts: 838
Rep Power: 17 |
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April 1, 2013, 01:29 |
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#6 |
Senior Member
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m actually is a natural time. I think you are trying to co-relate with powerlaw but this isn't correct. The mentioned model is CrossPowerLaw and it is different from PowerLaw. Try looking some more literature on it. Best of luck. |
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April 1, 2013, 03:44 |
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#7 | |
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Beijing, China
Posts: 838
Rep Power: 17 |
Quote:
That really helps me alot.I check it out and find its natural time from one paper. But in another paper it said this: Why is it so different? Thanks a lot! Regards, |
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April 1, 2013, 08:13 |
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#8 | |
Senior Member
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Quote:
I think, this may be because we are trying to match a range as mentioned in the 2.jpg It's just a guess, I am also not sure. Do let us know if you happen to find the answer. |
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