Using an axisymmetric discretization and an optimization algorithm, we measure the time-averaged concentration field of a 3D turbulent buoyant jet in Chapter 1. In Chapter 2, we confine the turbulent jet with a quasi-2D, 2mm thin cell to identify the TNTI and study the temporal fluctuations of concentration. We measure the concentration near the TNTI of quasi-2D turbulent jets in steady state In Chapter 3, we shift our attention to the unsteady quasi-2D jet flows, including starting jets and finite-volume puffs. We adapted the analytical framework for a quasi-2D turbulent jet in the literature, estimating spatial-temporal variation of the concentration for the nucleated oil. In Chapter 4, we reverse the direction of injection, forming a quasi-2D turbulent fountain. We show that the degree of mixing increases with density difference. That is, a stronger negative buoyancy force leads to stronger mixing and dilution. The thin-cell confinement induces the shielding effect and inhibits entrainment and mixing into the fountain.
|Qualification||Doctor of Philosophy|
|Award date||5 Jul 2023|
|Place of Publication||Enschede|
|Publication status||Published - 2023|
- Turbulent jets
- Turbulent mixing
- Solvent exchange
- Ouzo effect
- Multicomponent systems
- Multiphase flow
- Phase transition
FingerprintDive into the research topics of 'Mixing and Solvent Exchange in Turbulent Jet Flows'. Together they form a unique fingerprint.
Lee, Y. (Creator) & Huisman, S. G. (Creator), Areda (University of Twente), 30 Jul 2023
Lee, Y. (Creator) & Huisman, S. G. (Creator), Areda (University of Twente), 26 Jun 2023