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Sphere Flow Simulation
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0 Geometries 0 Meshes 0 Simulation setups 0 ResultsAbout this project
The present project aims to numerically investigate the flow characteristics of a fluid passing over a stationary sphere using computational fluid dynamics (CFD) simulation. The simulation is carried out on the SimScale cloud-based platform, which provides a browser-integrated environment for solving incompressible flow problems. A spherical object with a diameter of D=0.1 m is placed in a uniform air flow, with the Reynolds number (Re) varying from laminar to turbulent regimes (e.g., Re=1000 for laminar flow and Re=10 4 for turbulent flow). The primary objectives are to analyze the velocity field, pressure distribution, and wake formation behind the sphere, as well as to compute the drag coefficient ( C d ) and compare it with well-established experimental data from literature. The study first adopts a steady-state laminar flow model for low Reynolds number conditions, and the k−ω SST turbulence model is applied for high Reynolds number cases to capture flow separation and vortex structures accurately. The simulation results, including velocity contours, pressure distributions, and drag coefficient curves, will be used to validate the numerical model and to discuss the effect of Reynolds number on flow behavior around bluff bodies. This work not only demonstrates the application of CFD in solving external flow problems but also helps to deepen the understanding of fundamental fluid mechanics concepts, such as boundary layer development, flow separation, and drag forces.
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