title: The 3-Omega Method for the Measurement of Fouling Thickness, the Liquid Flow Rate, and Surface Contact.
abstract: The 3-omega method is conventionally used for the measurement of thermal conductivity in solid samples. The present work includes the experimental characterization and proof-of-concept measurements of sensor concepts, based on the 3-omega method. It is shown that this method can be used to measure fouling layers with a thickness of 10 to 400 μm, to conduct the measurement of flow rates with a high precision, and finally, as a simple on-off contact sensor with a fast response time.
authors.affiliation: Department of Engineering, Aarhus University, Hangoevej 2, 8200 Aarhus N, Denmark. casperc@eng.au.dk.
authors.forename: Casper
authors.initials: C
authors.lastname: Clausen
authors.affiliation: Department of Engineering, Aarhus University, Hangoevej 2, 8200 Aarhus N, Denmark. tim.pedersen@post.au.dk.
authors.forename: Tim
authors.initials: T
authors.lastname: Pedersen
authors.affiliation: Department of Engineering, Aarhus University, Hangoevej 2, 8200 Aarhus N, Denmark. bentien@eng.au.dk.
authors.forename: Anders
authors.initials: A
authors.lastname: Bentien
keywords: 3-omega; biofouling; contact; flow; fouling; sensors