Analysis of Nominally 2-Dimensional Flow About a Normal Flat Plate Using Smoothed Particle Hydrodynamics

• Main Author: Daniella, Dea
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/40770
• Institution: Institut Teknologi Bandung

In CFD, meshless method is developed as an alternative to grid-based method. Among many kinds of existing meshless method, this final project will focus on SPH (smoothed particle hydrodynamic), which approximates continuum (fluid) with particles and calculate properties of each particle based on the properties of neighboring particles using a smoothing or kernel function. To complete the SPH simulation, some form of post-processing must be developed. A code for flow velocity field and vorticity contour visualization and a force determination code were developed to measure the force generated by a bluff body from SPH simulation. Since the SPH measures properties of each particle in fluid flow instead of properties of each node or grid, it is more convenient to define force from the flow field surrounding the body instead of pressure and shear stress distribution at the surface of the body. After the force determination code was developed, SPH simulation was conducted using an existing open-source code. The force was examined at various Reynolds number for a flat plate that is set normal to the flow, acting as a bluff body. The force obtained from simulation was compared with the experimental result in towing tank. It is found that the time step, size of force calculation domain, number of particles in SPH simulation, grid size in force calculation, and also the type of solver code greatly affected the accuracy of force determination code.