Flow Characteristics Around Staggered D-Type Cylinders Near a Flat Wall: A 2D Numerical CFD Investigation
Jubaidaha (a*), Budiman Nasution (a), Erniwati Halawa (a), Yeni Megalina (a), Suprapto (b), Yopan Rahmad Aldori (c)

(a) Department of Physics, Faculty of Mathematics and Natural Sciences, State University of Medan, Indonesia
(b) Department of Mechanical Engineering, Faculty of Engineering, State University of Medan, Indonesia
(c) Department of Mechanical Engineering, Faculty of Engineering, University of Medan Area, Indonesia
(*) jubaidah[at]unimed.ac.id

Abstract

Fluid flow around cylinder groups is critical in many technologies, with complex patterns arising from interference. D-type truncated cylinders in a staggered arrangement show unique dynamics, making in-depth understanding crucial for engineering applications. This study investigates their low characteristics using 2D Computational Fluid Dynamics. A 2D model was built and simulated with ANSYS Fluent. This 2D approach efficiently explores parameters and analyzes fundamental flow physics, providing a base for future 3D studies. We focused on a trailing edge angle of 36 degrees, chosen for its impact on flow separation and reattachment, vital for designs needing reduced wake effects. Side-by-side and staggered cylinder pairs were analyzed. Quantitative and qualitative analysis included pressure coefficients, velocity profiles, and visualizations of flow patterns and vortex structures. Mesh independence validated the results. This numerical investigation offers crucial insights, optimizing truncated cylinder designs for applications like heat exchangers and offshore structures.

Keywords: D-Type Cylinder- Flat Wall- Stagger Angle- CFD- 2D Simulation- Fluid Flow

Topic: Sciences, Engineering and Material Science