Faculty Publications
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Item Numerical study of oscillating lid driven cavity with the presence of an obstacle using immersed boundary method(Elsevier Ltd, 2022) Yaswanth, D.; Maniyeri, R.In this paper, an oscillating lid driven cavity with an obstacle at center is simulated to study the effects on fluid mixing for various oscillating frequency (ω) and Reynolds number (Re). The oscillating lid promotes the generation of vortices and further presence of an obstacle breaks them into multiple sub-vortices which greatly enhance fluid mixing. This study is carried out to find the optimum parameters of the fluid mixing. It is performed by discretizing continuity and momentum equations using finite volume method on staggered grid system. The fluid–structure interaction is studied using feedback forcing scheme based immersed boundary method (IBM). A numerical model is developed and validated with previous results, and then simulations are carried out for different Re and ω to find the optimum for efficient fluid mixing inside the cavity. © 2022Item Numerical Study of Double Wall Oscillating Lid Driven Cavity(Springer Science and Business Media Deutschland GmbH, 2023) Yaswanth, D.; Maniyeri, R.This paper presents a two-dimensional finite volume method-based computational model to understand the mixing phenomena in a double wall oscillating square lid driven cavity. The study is mainly performed to see the effect of Schmidt number by employing SIMPLE algorithm to solve the discretized equations of mass, momentum and concentration. The developed code in FORTRAN is validated by comparing with previous works. Numerical simulations are conducted on parallel and antiparallel wall oscillations and found that low Schmidt number provides better mixing in both cases. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.