Open AccessDetermination of the transition curve between flow modes during filtering an acid through a chemically active porous medium
Author(s) -
Rinat A. Plavnik,
I. N. Zavialov,
A. V. Konyukhov,
Denis S. Vetoshkin
Publication year - 2021
Publication title -
vestnik sankt-peterburgskogo universiteta. matematika. mehanika. astronomiâ/vestnik sankt-peterburgskogo universiteta. seriâ 1, matematika, mehanika, astronomiâ
Language(s) - English
Resource type - Journals
eISSN - 2587-5884
pISSN - 1025-3106
DOI - 10.21638/spbu01.2021.214
Subject(s) - filtration (mathematics) , flow (mathematics) , mechanics , porous medium , scaling , porosity , chemistry , chemical physics , materials science , thermodynamics , physics , organic chemistry , geometry , mathematics , statistics
It is known that during the filtration flow, if the displacing liquid can chemically react with the skeleton while emitting a gas phase, then this flow mode may be unstable. During the filtration process, pressure fluctuations will be observed, and the displacing fluid will move in waves called “acid waves”. Our research suggests a simple theoretical model that gives a qualitative explanation of the causes of this phenomenon. We conducted laboratory simulations and detected the boundary of the appearance of “acid waves”, depending on the concentration of the chemically active component. At the same time the theoretical model can also predict the appearance of “acid waves” in the laboratory experiment, which will allow scaling the studied phenomenon in the future.