Therefore, it was concluded that stability measurement and investigation for each nanofluid preparation may be leading to a standard way of preparation and unified data.
Hence, experimental studies on preparation and different stability methods of nanofluids are reviewed.
Theoretical attempts made to explain the associated characteristic mechanisms are also outlined.
In addition to these, the measurement methods proposed for the determination of stability are summarized and thermophysical property predictions of the models are compared with experimental findings, and significant discrepancies are specified.