28.1.81 Herschel

Function

y=y_0+Kx^n

Brief Description

Herschel-Bulkley model to describe viscoplastic materials exhibiting a power-law relationship.

Sample Curve

Herschel.png

Parameters

Number: 3

Names: y0, K, n

Meanings: y0 = yield stress, K = consistency, n = flow index

Lower Bounds: y0 >= 0, K > 0, n > 0

Upper Bounds: none

Derived Parameters

Script Access

nlf_Herschel(x,y0,K,n)

Function File

fitfunc\Herschel.fdf

Category

Rheology