6533b85dfe1ef96bd12bdbe5
RESEARCH PRODUCT
Determination of the Soret coefficient of magnetic particles in a ferrofluid from the steady and unsteady part of the separation curve
Stefan OdenbachTh. VölkerElmars Blumssubject
Fluid Flow and Transfer ProcessesFerrofluidSteady stateBuoyancyMaterials scienceMechanical EngineeringSeparation (aeronautics)Thermodynamicsengineering.materialCondensed Matter PhysicsHeat capacityThermophoresisPhysics::Fluid DynamicsParticle separationengineeringMagnetic nanoparticlesdescription
Experiments on the particle separation in a vertical thermodiffusion column are used to investigate the separation (Soret effect) in ferrofluids. The use of a two-sectional column with internal walls of low thermal capacity allows analyzing the initial part of the unsteady separation curves as well as the steady state regime. The Soret coefficient calculated from the measurements of the separation dynamics agrees well with the one found from the steady separation limit reached in long-time experiments especially if the solutal buoyancy is low.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-09-01 | International Journal of Heat and Mass Transfer |