Working with Projects
? EFD.Lab uses configurations as a geometry basis for projects. You can create
an EFD.Lab project in one of the following ways:
– Create a new project and configuration. Using this method, you define a new configuration for the new EFD.Lab project that is based on an existing configuration. – Use current configuration. This method attaches a new EFD.Lab project to the currently active configuration. The project name is the same as the current configuration.
Flow Analysis -> Projects -> New
Flow Analysis -> Projects -> Clone Project
? Allows you to create an exact copy of the current project. ? Use an existing configuration or copy it to a new configuration
? The project settings such as General Settings, Conditions, Goals, Units and results features are copied to the new project.
? If results are available, you can also copy them. In this case, the current and cloned project are identical.
This may be useful if you need to compare variants of a model with a few changes such as small discrepancies in geometry, different boundary conditions or fluids.
Copy Features among Projects
Flow Analysis -> Tools -> Copy Features
? Copy project’s Input Data and Results features from the active project to other projects (clones) within the same model. – Input data – Boundary conditions – Goals – Cut plots – Trajectories etc.
Flow Analysis -> Project -> Rebuild
? If you have modified the model, you need to update the project settings and verify all the features
? You must also rebuild the project after you rectify any Rebuild Error encountered by EFD. 114
Flow Analysis -> Project -> Create Template.
? Template contains all general project settings that can be used as a basis for a new project. ? These settings (wizard settings only: problem type and physical features, fluids, solids, initial and ambient flow parameters, wall condition, geometry and result resolution, unit settings) can be specified under General Settings, Calculation Control Options, Initial Mesh and Units.
EFD Default Template
? ? Analysis Type Internal Physical Features – Heat conduction in solids OFF (no solids defined) – Heat conduction in solids only OFF – Radiation OFF – Time dependent OFF – Gravity OFF – Rotation OFF Default Fluid – Default fluid type Liquid – Project fluids Water – High Mach number flow OFF – Flow type Laminar and Turbulent ? ? ? Default wall thermal condition Adiabatic wall Roughness 0 micrometers Thermodynamic parameters – Pressure 101325 Pa – Temperature 293.2 K Velocity parameters 0 m/s Turbulence Parameters – Turbulence intensity 2% – Turbulence length <Dependent on the model size> Level of initial mesh Level 3 Geometry Resolution <Dependent on the model size> Advanced narrow channel refinement OFF
? ? ?
Flow Analysis -> Tools -> Parameter Editor
? Allows you to edit parameter values of different input data features (boundary conditions, initial conditions, fans, etc.) from different projects using the same dialog box. You can edit parameter values of several features simultaneously, if the parameters are common for the selected features.
Tutorial 4 Hydraulic Loss
Closing – Day 1
? Clone the ?Simple PC“ model for a project with External Flow – Enlarge the computational domain, so that the PC is surrounded completely by air. Delete or suppress the lids! – Watch gridding and CPU time ? Clone the model for free convection – Fan suppression – Gravity orientation ? Clone for PCB thickness of 1.6 mm – Watch gridding and CPU time – Change the board conductivity to k=10 or to orthotropic ? Clone for more refined basic mesh resolution ? Implement your own ideas!