Point the flow rate water and and the pressure

Q (m³ s-1)	γ (s-1)	ΔP (Pa)
6.000×10-8	4889	25820
1.200×10-7	9778	36140
3.000×10-7	24450	58670
6.000×10-7		82140
1.200×10-6		98570

c. Plot the rheogram and determine analytically the rheological parameters of this fluid.

[16 marks]
d. Explain which changes in the fermentation broth might have caused the rheological properties observed. [8 marks]


90°, flanged	0.3


45°, threaded	0.4



	1.5

Tees


Branch flow, flanged	1.0



	0.15
Gate, ½ closed

	0.05
Ball valve, ⅓ closed

Appendix to BENG0001 Coursework 1

•

γ = 2πNr𝑖
(r0 − r𝑖)

Q = πr4∆p
8μL

•	Modified (or extended) Bernoulli equation

𝑚̇ = 𝜌𝑄

•	Carman-Kozeny equation	∆𝑃 = 180. 𝜇. 𝑣𝑇. 𝐿(1 − 𝜀)2 2 𝜀3𝑑𝑝