Читать книгу The Rheology Handbook - Thomas Mezger - Страница 181

From a crude oil is known: η1 = 36 mPas (at p1 = 0.1 MPa = 1 bar),

and η2 = 45 mPas (at p2 = 10 MPa = 100 bar). Desired is the αp-coefficient.

1 pref = p1 = 0.1 MPa

2 ap = η2 (p2) / ηref (p1)= 45/36 = 1.25

3 αp = ln (ap )/ Δp = ln (1.25) / (10 – 0.1) MPa = 0.0225 MPa-1 (= 22.5 ⋅ 10-3 MPa-1)

End of the Cleverly section