Order Fluid Mechanical Project Assignment

Order Fluid Mechanical Project Assignment
Fluid Mechanics Project Assignment (Total 15%)
Due Dates:
Report: to D2L Assignment Dropbox by 4pm, 5/01/2020 Friday
Problem: Steady flows pass a cylinder (see ‘Problem Specification’ in the Tutorial).
Requirements: Report should include Introduction, Theory (Potential Flow), Computational Model, Results, and Conclusions, Discussion and References. Use 1” margin on top, bottom, left, and right. Use Times New Roman 12 font and 1.5 line spacing. In Results session, present and compare the velocity field, streamlines, and drag forces on the cylinder from both the model and theoretical results. In Discussion, discuss why these results from two approaches are similar or different.
Tutorial 1. Flow over a Cylinder – Two Dimensional Case
Using ANSYS Workbench
Simple Mesh
Order Fluid Mechanical Project Assignment
The primary objective of this Tutorial is to guide the student using Fluent for first time through the very basics of CFD simulation using ANSYS Workbench.
The objective of this simulation is to determine the velocity and pressure fields produced when a fluid flows over a cylinder. In addition, the drag force exerted by the fluid over the cylinder is computed. Streamline plots are also available.
Summary: In this exercise, the flow over a cylinder is modeled. The flow is assumed to be two dimensional therefore the cylinder can be represented by a circle. A flow domain surrounding the cylinder is created and meshed. Boundary conditions are applied to the simulation to obtain plots of static pressure, velocity magnitude, and streamlines. The drag coefficient can be calculated using the forces exerted by the fluid on the cylinder as computed by the software.
1. Starting ANSYS Workbench • Click on the Start Menu, and then select Workbench 14.0. • Close Getting Started window. • Left click on the tab corresponding to FluidFlow (FLUENT) and without releasing the mouse button drag the icon to the Project Schematic window (central big window). • Click twice on the lower tab and rename the project to Cylinder1
• Now right click on the Geometry tab and select the properties option, a Properties of Schematic window will open. Change the Analysis Type under the Advanced Geometry Options from 3D to 2D. • Back to the Project Schematic Window, click twice on the Geometry tab. This action will launch ANSYS Design Modeler (green logo DM).
2. Create Geometry • Set units to centimeters (cm) and click ok. • Right click on icon corresponding to XYPlane and select look at. • Down below the Tree Outline window you will see the Sketching and Modeling tabs. Select the Sketching tab. • A Sketching Toolboxes window will replace the Tree Outline window with a new set of tabs, select the Settings tab. • Select Grid and activate the buttons Show in 2D and Snap. • Make sure that Major Grid Spacing is set to 5 cm, Minor–Steps per Major is 5, and Snaps per Minor is 1.
• Click on the icon corresponding to New Sketch to create sketch 1. Click again on the icon to create Sketch 2. Click on the Modeling tab and you will notice that you have created Sketch 1 and Sketch 2.