Modeling of Turbulent Flow Over a Circular Cylinder Using Open Source Software OpenFoam


Book Description

Flow over a circular cylinder is a classic problem in fluid mechanics that has been extensively studied due to its relevance in various engineering and natural phenomena. This abstract provides an overview of the key characteristics and flow phenomena associated with the flow over a circular cylinder. The flow over a circular cylinder is characterized by the formation of vortices and the presence of boundary layer separation. The flow behavior depends on several parameters, including the Reynolds number (Re), which represents the ratio of inertial forces to viscous forces in the flow. At low Reynolds numbers (Re 2,000), the flow becomes turbulent, characterized by chaotic and irregular vortex shedding. The flow separation region on the cylinder surface expands, resulting in increased drag forces. Turbulence intensifies the mixing of fluid layers and enhances heat and mass transfer rates. Researchers have extensively investigated the flow over a circular cylinder using experimental, numerical, and theoretical approaches. The understanding of flow characteristics and vortex shedding patterns has led to advancements in various fields, including aerodynamics, fluid-structure interaction, and marine engineering. In conclusion, the flow over a circular cylinder exhibits complex flow phenomena, including vortex shedding, flow separation, and turbulence, which are influenced by the Reynolds number. The study of this flow problem has contributed to the development of engineering applications and improved our understanding of fluid dynamics.




Hydrodynamics Around Cylindrical Structures


Book Description

This book discusses the subject of wave/current flow around a cylinder, the forces induced on the cylinder by the flow, and the vibration pattern of slender structures in a marine environment.The primary aim of the book is to describe the flow pattern and the resulting load which develops when waves or current meet a cylinder. Attention is paid to the special case of a circular cylinder. The development in the forces is related to the various flow patterns and is discussed in detail. Regular as well as irregular waves are considered, and special cases like wall proximities (pipelines) are also investigated.The book is intended for MSc students with some experience in basic fluid mechanics and for PhD students.







Flow Around Circular Cylinders


Book Description

This text offers an authoritative compilation of experimental data, theoretical models, and computer simulations which will provide the reader with a comprehensive survey of research work on the phenomenon of flow around circular cylinders.




Skin-friction Measurements in Incompressible Flow


Book Description

Experiment have been conducted to measure the local surface-shear stress and the average skin-friction coefficient in incompressible flow for a turbulent boundary layer on a smooth flat plate having zero pressure gradient. Data were obtained for a range of Reynolds numbers from 1 million to 45 million. The local surface-shear stress was measured by a floating-element skin-friction balance and also by a calibrated total head tube located on the surface of the test wall. The average skin-friction coefficient was obtained from boundary-layer velocity profiles.







The Vortex-in-cell Method


Book Description