![]() ![]() |
![]() |
Vivek V. Buwa |
Advanced Flow Characterization |
Process intensification
of multiphase flow processes using micro-structured
channels/reactors |
Over the years, microreactors have emerged as
a promising way for process intensification in the areas of fine
chemical synthesis like pharmaceutical drug synthesis, biological and
chemical processing (e.g. solvent extraction, hydrogenation reactions).
In addition to the advantages of high surface-to-volume ratio offered by
microreactors, different micro-structured reactors can be designed to
generate favorable flow fields leading to further process
intensification. Although most of the industrially relevant reactions
involve multiple phases, intensification of multiphase flow process has
received relatively less attention than that involving single phase
flow. Our aim is to characterize two phase (gas-liquid and liquid-liquid
flows) flow and related mass/heat transfer rates. Apart from using high
speed imaging to aid the flow visualization and flow regime
categorization, the primary focus is to measure instantaneous velocity
for two-phase flow in microchannels using non-intrusive time-resolved
μ-PIV. Mass transfer involving liquid-liquid flow is also being
investigated by chemical means in simple and micro-structured channels.
Also, quantitative measurements of concentration as well as temperature
distributions in two-phase flow will be studied using μ-LIF. Finally,
industrially useful chemical reactions involving two/three phase flows
will be performed in microchannels. |
|
Publications/conference presentations: |
· Sayantani
Saha,
Vivek B. Buwa, Characterization of single phase and gas-liquid flows in
milli-channels using µ-PIV and µ-LIF,
accepted for
presentation at 12th International Symposium on Particle Image
Velocimetry (ISPIV 2017) to
be held in Busan, Korea during
19-21 June 2017. |