Browsing by Author "Al Faiyaz, Sadman"

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    A Comparative Numerical Analysis for Vortex Generation on Different Geometries
    (World Congress on Engineering, 2021-07-07) Zehad, Shahadat Hossain; Al Faiyaz, Sadman; Ahmed, Irfan; Raihan, Masruk
    —Demand for renewable energy is escalating in the present world where power generation through generating vortex which is the whirling mass of fluid plays a crucial role in being harmless for the environment. This study is composed of analyzing different structures of vortex chamber by implementing several conditions for extracting the finest vortex generation that will be efficient enough to move the runner blades for the production of electricity. Two different geometries of vortex chamber of different diameters along with channel with a contraction section are carried out for simulation through ANSYS CFD after modeling in CAD for the comparison for most befitting vortex generation is obtained by differentiating through pressure, velocity, swirling strength, and from different diameters of the vortex chamber.
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    Numerical Analysis of Gravitational Vortex Chamber
    (Technium, 2021) Zehad, Shahadat Hossain; Al Faiyaz, Sadman; Islam, Md. Redwan; Ahmed, Irfan
    A rotating mass of fluid is known as vortex and the motion of the rotating mass of fluid is known as vortex motion. Vorticity is the circulation per unit area. In this research simulation of a vortex chamber is to be carried out in ANSYS CFD taking water as fluid domain for generating a water vortex that is capable enough to move a turbine for electricity generation. The CAD modelling of the setup was set down and simulation was done in fine mesh by taking suitable wall function in the model of a cylindrical chamber along with a rectangular channel with a contraction portion at the end of it where good amount of vortex generation was acquired by observing velocity and pressure by setting different parameters. The results shows the pressure and velocity contours with 3D velocity streamline flow and the curve of the velocity and pressure curve shows the decrease of pressure and increase of velocity from inlet to outlet that leads to a decent vortex generation.