Akademik Veri Yönetim Sistemi
6th International New York Conference on Evolving Trends in Interdisciplinary Research & Practices, New York, Amerika Birleşik Devletleri, 3 - 05 Nisan 2022, ss.211
The steady laminar flow of incompressible non-newtonian fluids around a pair of parallel grooved cylinders has been numerically investigated. The pressure, friction and total drag
coefficients, the streamlines velocity, pressure coefficient have been studied in this research; the primary objectives of this study are to find out how the power-law index affects the drag coefficient, as well as how the sinusoidal form grooved affects the hydrodynamics of the fluid. The present study reports on a groove amplitude of 0.04. The sinusoidal shape grooves were chosen at 10, evenly spaced around the diameter of the cylinder, over a Reynolds number up to 40. The power-law index was determined to be 0.4, 1, and 1.8, while the Gap ratio between the cylinders is 2. The numerical approach used in this simulation is based on the finite volume method with a radial and circumferential resolution of 600x130 grid points, respectively. The predicted results show an excellent agreement with the available results in the literature for both upstream and downstream cylinders. It can be seen that the presence of the grooves on the surface of the cylinders leads to a marked reduction in the total drag coefficient for both cylinders. Where this trend is more pronounced as the power-law index increases.
Keywords: Drag Coefficient, Grooved, Non-Newtonian, Tandem, Steady.