Oil data reduction
Oil data reduction
(OP)
Dear All,
I am trying to find an equation to fit the data of oil viscosity properties.
As I suppose many of you know, the main problem is due to the large excursion of values in function of temperature.
I have found this interesting post thread391-287467: Oil Cooling.
I have then tried to utilize the equation
viscosity = A*exp(B/T),
without great success, since I can't fit the properties to this equation, nor the formula of the attempt to realize a logarithmic interpolation - kind of the spreadsheet in the quoted thread - seems to work, since I am having large deviations (even 700%) in the intermediate points.
Please, I would like to understand if, according to your experience, these equations fit to every oil, or only to some oils, or if you could recommend me some different solutions to utilize.
Thanks
I am trying to find an equation to fit the data of oil viscosity properties.
As I suppose many of you know, the main problem is due to the large excursion of values in function of temperature.
I have found this interesting post thread391-287467: Oil Cooling.
I have then tried to utilize the equation
viscosity = A*exp(B/T),
without great success, since I can't fit the properties to this equation, nor the formula of the attempt to realize a logarithmic interpolation - kind of the spreadsheet in the quoted thread - seems to work, since I am having large deviations (even 700%) in the intermediate points.
Please, I would like to understand if, according to your experience, these equations fit to every oil, or only to some oils, or if you could recommend me some different solutions to utilize.
Thanks





RE: Oil data reduction
The tabs of interest will be the first (leftmost) 6 tabs. The last (rightmost) 4 tabs relate to interpretting viscosity index.... not your question.
Referring to the task of th first 6 tabs, I have cut/pasted an my explanation of how it works:
There have been some threads before that jmw initiated on a similar subject, going into considerable detail.
=====================================
(2B)+(2B)' ?
RE: Oil data reduction