Fingering Instability During Mixing-Driven Precipitation Flow

Fingering Instability During Mixing-Driven Precipitation Flow

Negar Shahsavar, Xiaojing Fu, Benzhong Zhao

We investigate fluid–fluid displacement in a Hele–Shaw cell where two fluids react to form of a precipitate suspension. We observe interesting fingering patterns whose birth, growth and decay are strongly influenced by the injection rate. Additionally, the fingering instability has strong feedback on the mixing and the subsequent precipitation rate. Lastly, we find that, counter to intuition, a higher injection rate results in a larger amount of precipitates that are securely deposited.

Transport in Porous Media 151, 323–338 (2024)
Corresponding Author: Benzhong Zhao

InterPore Members can promote their publications to the community via the InterPore InJournals Section of the Newsletter. If you wish to do so, please submit your publication highlight to newsletter@InterPore.org. Clearly indicate which of the authors is an InterPore member (or the institute with an Institutional Membership). Note that we will not review the entries nor does InterPore endorse the published work. Furthermore, we publish on a “submitted first, published first” basis. The highlighted publication should be no older than 6 months (available online).

The highlight should be short (max 100 words) and contain an illustration. Please note that we offer this opportunity exclusively to InterPore members. If you would like to become a member, please have a look here.