Faculty Publications

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Author: search.filters.author.Maniyeri, R.Subject: search.filters.subject.Lid driven cavity

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    Mixing in Oscillating Lid Driven Cavity—A Numerical Study
    (Springer Science and Business Media Deutschland GmbH, 2021) Neeraj, M.P.; Maniyeri, R.
    The mixing problems are highly important to be dealt with in fluid mechanics. In the present work mixing in a lid driven cavity with constant top wall velocity and oscillating top wall velocity is addressed. The staggered grid system is used and discretization of continuity equation, Navier–Stokes equations and concentration equation are done using Finite Volume Method. The Euler Explicit scheme is used for solving the numerical problem. Firstly, the developed computational model is validated with that of other researcher’s results for the case of constant top wall motion. Then the simulation is done for oscillating top wall for a Reynolds number of 100 and two amplitudes. The results in both cases are compared. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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    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. © 2022