Acoustics and Flow Diagnostics Laboratory

WWelcome to the homepage of Acoustics and Flow Diagnostics Laboratory (AFD lab). In our group, we perfrom experimental, theoretical and numerical work on problems involving flow instabilities. Key research details are given below:

  • Self-sustained oscillations in nonreacting cavity flows (experimental & theoretical)

    The basic experimental setup consists of a cavity created in a duct using two inhibitors (orifice plates of various thickness and diameters). The facility allows us to study forced synchronization in non-reacting flow systems. We have also developed a phenomenological model from first principles to explain key observations.

  • Trapped vortex combustion (experimental & theoretical)

    The trapped vortex combustor (TVC) facility has a provision to continuously vary cavity aspect ratio (L/D). The setup allows us to study the effect of cavity aspect ratio on combustor stability and lean blowout. Phenomenological modelling from first principles has also been achieved for this setup.

  • Flame-driven Rijke tube (experimental)

    The horizontal flame-driven Rijke tube facility has a provision to vary flame location and co-flow with additional provision to introduce vortical and acoustic forcing of the flames. The Rijke tube facility can operate in both premixed and non-premixed manner.

  • Supercritical and transcritical flow solver (computational)

    We developed an OpenFOAM-based solver that can handle supercritical and transcritical fluid flows. The code has been extended to study swirling flows, mixing and reaction with a focus on modelling cryogenic rocket environments.

If you are interested in working with us, use the contact details provided below.