Anomalous heat transfer modes of nanofluids: a review based on statistical analysis

Table 7 Experiments focusing on Rheological Studies

Paper Reference	keff/kNF Conduction	keff/kNF Convection/mixed	NP material	NP size, (nm unless specified)	BF material	F,(vol% Unless specified)	T test, (K)	Experimental Apparatus Index No	Mechanis m Index No	µNF/µBF	Flow Status	Effects of Gravity	PBHT	CHT	Notes
[23]	-	1.08	TNT	10X100	EG	1		-	1,2,6	1.35	-	-	-	-	high shear viscosity recorded here
[23]	-	1.15	TNT	10X100	EG	1.75		-	1,2,6	1.75	-	-	-	-
[93]	-	-	Fe₂O₃ - PEO dispersant	30	water	3	299	-	2	1.015	-	-	-	-	high shear viscosity recorded here, averaged values
[93]	-	-	Fe₂O₃ - PVP dispersant	30	water	3	299	-	2	1.07	-	-	-	-
[83, 85]	-	-	Al₂O₃	36	water	3	290	3	-	1.3	-	-	-	-	the effect of rising temperature reduces the effective viscosity. However, the values for augmented temperature for viscosity are not recorded here as they are a result of unstable and damaged NF due to the surfactant change of composition
[83, 85]	-	-	Al₂O₃	36	water	6	290	3	-	2	-	-	-	-
[83, 85]	-	-	Al₂O₃	36	water	10	290	3	-	3.1	-	-	-	-
[83, 85]	-	-	Al₂O₃	47	water	1	290	3	-	1.4	-	-	-	-
[83, 85]	-	-	Al₂O₃	47	water	4	290	3	-	3	-	-	-	-
[83, 85]	-	-	Al₂O₃	47	water	9	290	3	-	5.3	-	-	-	-
[83, 85]	-	-	CuO	29	water	1	290	3	-	1.35	-	-	-	-
[83, 85]	-	-	CuO	29	water	4	290	3	-	2.5	-	-	-	-
[83, 85]	-	-	CuO	29	water	9	290	3	-	4	-	-	-	-