Conference Papers

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    Fluid Flow Analysis in a Partially Filled Horizontal Channel with a Metal Foam Block—A Numerical Study
    (Springer Science and Business Media Deutschland GmbH, 2024) Aditya, N.; Gnanasekaran, N.; Yadav, A.K.
    This numerical study investigated fluid flow behaviour in a horizontal channel partially filled with a metal foam block with various foam lengths. The effect of inlet velocities from 6.5 to 12.5 m/s and different pore densities from 5 to 30 PPI is analyzed. Results show that the location of eddy formation, the magnitude of pressure drop, and friction factor vary with the inlet velocity, foam length, and pore density. Pressure gradient increased with inlet velocity, PPI, and lflf,max, with the highest value of approximately 1190 Pa/m for the case of 30 PPI, 12.5 m/s, and lflf,max = 1. The friction factor increased with PPI, lflf,max and decreased with inlet velocity with a maximum value of 4.2 for the case of 30 PPI, 6.5 m/s, and lflf,max = 1. Low inlet velocity and high PPI result in more deviation of fluid flow from the bulk flow direction, upstream of the block. There is a tendency for early variation of fluid flow for more extended foam blocks. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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    Effect of Induced Helicity on the Hemodynamics of Carotid Artery Passage
    (Springer Science and Business Media Deutschland GmbH, 2024) Rakesh, L.; Kadali, A.; Prakashini, K.; Anish, S.
    Abrupt narrowing of the carotid artery known as atherosclerosis is a common cardiovascular disease, increasing the risk of stroke which is one of the leading causes of death. Helicity in the arterial passage is found to be one of the effective ways to minimize plaque formation. Using Autodesk Meshmixer, an open-source software, the stenosed portion of the diseased artery is removed to obtain what is referred to in this study as the base case. The helicity and hemodynamic characteristics of a patient-specific geometry with and without stent in repaired instance are examined. The current study found that when novel stent design is placed there is a reduction in recirculation zone size and Relative Residence Time (RRT), but also resulted in increased pressure drop across the artery. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.