Table 5 Fitting data of the HGs with different rheological models

Power law:

η = m.γ ⁻ⁿ

R²

0.9800

0.9909

0.9647

m

14,3317

3,893

2,844

n

0.0289

0.5295

0.2331

Bingham:

τ = τ₀ + η.γ

R²

0.9948

0.9912

0.9954

η

0.0060

0.5596

0.5164

τ_o

0.0007

-1.1437

-0.4965

Casson:

τ^0.5 = τ₀^0.5 + η^0.5. γ ^0.5

R²

0.9948

0.9927

0.9967

η

0.0064

1.1686

0.7012

τ_o

1.6 × 10^–5

1.2627

0.1800