Prof. Meenatchidevi Murugesan from Indian Institute of Technology Dharwad joined TFD group of Technical University of Munich, Garching campus, Germany. Murugesan is visiting us through TUM Global Visiting Professorship in June/July 2024 to work on low-order modeling of thermoacoustic limit cycles in combustors fueled with hydrogen and ammonia. There are certain frequencies at some peculiar values that we need to understand. We are much interested in looking into the nonlinear dynamical states as the combustors are operated with carbon-free fuels.