FLOW3D官方培训习题讲解.pdfVIP

Session 2 Exercise Materials contained in this section: Aerospace Casting Hydraulics Exercise – Session 2 Aerospace Description: This exercise is a simple tank filling simulation. A large spherical tank with a cylindrical inlet (see Figure 1) will be filled with water in an earth gravity environment. The tank initially contains some fluid that is at rest. Gravity Z X Specified Velocity Figure 1 – The tank that will be filled in this exercise is spherical and 10m in diameter. Objective: In this exercise, you will step through decisions on the size of the computational domain, mesh resolution, and physical models. A CAD geometry file for a simple 10m diameter spherical tank with a cylindrical inlet 5m long and 2m in diameter is provided. The tank will be filled with water for 100 seconds. An optional exercise is available to test the efficiency of different pressure solvers for this type of simulation. Setting up the Simulation: Launch FLOW-3D® and immediately save the project as prepin.fill in the \Class\Aerospace\Handson-2 directory. The first step in designing a simulation is to understand the problem being modeled. It is beneficial to start the simulation setup by first creating or importing the geometry. In this case, a CAD file named tank.stl has been created to define the tank and is located in the \Class\Aerospace directory. Import the CAD Geometry: To import the tank geometry defined in tank.stl, first select the Meshing Geometry tab to switch the GUI focus to that tab. From the Subcomponent sub-Menu, se