Abstract
Numerically modeled vortex chamber, both in 2D and 3D, have been employed to analyze the flow features of tornado-like vortex. In 2D analysis, flow structure was first investigated using a fixed overall height and varying swirl ratios (S) followed by the variation of overall chamber height to observe its effect on touchdown S. Increasing overall chamber height lowered the touchdown S. Ground pressure profile showed some contrast from experiment as the pressure was found to be increasing even after touchdown. A tentative projection of overall chamber height required to obtain touchdown similar to experiment was found to be at H = 49.5. The proposition of increasing the chamber height alone to reach touchdown state would make the analysis computationally intensive and potentially infeasible. For further analysis, 3D model, brought in action, revealed touchdown to occur at similar parameters with similar trend of pressure plot as the 2D model.
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Acknowledgements
The authors acknowledge the support received from National Science Foundation (NSF) under award number CMMI-1762999.
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Verma, S., Selvam, R.P. (2021). Effect of Height of the Tornado Chamber on Vortex Touchdown. In: Rushi Kumar, B., Sivaraj, R., Prakash, J. (eds) Advances in Fluid Dynamics. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-4308-1_38
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DOI: https://doi.org/10.1007/978-981-15-4308-1_38
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