Nueva Versión EFD.Lab 7.0, el programa de Análisis de Fluidos para cualquier CAD 3D

EFD.Lab V7.3
Análisis de Fluidos para cualquier Sistema CAD 3D
Lista de Mejoras y Nuevas Capacidades
(Marzo-2007)

EFD.Lab v7.0

Physical Features and Technology

64-bits technology. The new EFD.Lab v9.3 can now be run on 64-bit machines. As a result, users will be able to analyze very large problems (4-6 million cells), those generally as too large or too time consuming, directly in the desktop.

Integrated Interface with MSC.Patran. To help engineers solve design problems involving both fluid and structural issues, EFD results can now be applied as loads for structural analysis inside MSC.Patran. Fully integrated into Patran, the automated interface drastically reduces the amount of time reduces the amount of time necessary to update analysis results.

Improved thin walls resolution. The new mesher technology allows one mesh cell to contain more than one fluid and/or solid volume, substantially reducing the amount of cells needed to resolve thin walls and other fine geometrical features of a model. Both sides of a thin wall or all faces of a sharp edge can reside within the same cell. For example, a straight thin heatsink fin can be resolved with only one mesh cell across the fin.

Materials with orthotropic thermal conductivity. In the Engineering Database you can specify a solid material with different conductivities en X, Y & Z directions (orthotropic, axisymmetrical/biaxial or unidirectional thermal conductivity). The direction vectors must be parallel to the axes of a project’s global coordinate system. This feature will allow accurate simulation of PCB which are usually orthotropic.

Relative humidity. You can specify relative humidity of a gas as a boundary, initial or ambient condition and solve problems involving the calculation of relative humidity.

Cavitation. If you are analyzing the flow of water where cavitation may occur, you can enable the Cavitation option in the Wizard, General Settings or Fluid Subdomain dialog boxes to take into account this phenomena and obtain a better, more realistic results. You can accept the default Dissolved gas mass fraction or specify your own value. A homogeneous equilibrium cavitation model is used.

	Periodic boundary conditions. When analyzing a model consisting of identical geometrical features or groups of features arranged in some linear pattern, i.e. repeating regularly over distance, using periodic boundary conditions allows you to reduce required computational time and resources by performing calculation only for a small group of identical features or even for one feature. The solution automatically will take into account other entities of the pattern in the specified direction and the obtained results will be the same as if the whole model was calculated.
	Turbulent flow option for compressible liquids. When creating a new project, you can now set Flow type for compressible liquids as Turbulent or Laminar (default), Turbulent only or Laminar only.
	Thermoelectric cooler. With a Peltier thermoelectric cooler model you now have the ability to solve electronics cooling problems involving Peltier devices. The characteristics of thermoelectric coolers are stored in the Engineering Database, so you can create a library of Peltier devices. To add a Thermoelectric cooler to a model, create a representative component (parallelepiped), select the hot side (face) and specify the current.

General and Usability Capabilities

PRE-PROCESSOR:

Goal-dependent Volume/Surface Heat Sources & Temperatures (Thermostats). You can specify a surface or volume heat source & Temperature with parameters dependent on the current value of a certain goal, i.e. the amount of heat generated by the heat source will change together with the selected goal’s value during calculation according to the dependency specified by you.

	Select All option for Batch run. Now you can control the Run, Shutdown Monitor and Run Batch Results Processing options in the Batch Run dialog box for all open projects simultaneously by using the Select All checkbox.
	New units for pressure and volume flow rate. New units for the Pressure and Volume flow rate parameters are available: millibars (mb), 1 bar = 1000 mb; and liters/hour, 1 m³/s = 3600000 liters/hour.
	Fully developed tube flow on rectangular inlets. The fully developed tube flow with corresponding velocity profile and turbulence parameters now can be specified on inlets with a rectangular cross section in the same way as it is specified at circular inlets.

8_fullydevelopedflow.jpg (47482 bytes)

MESHER:

Possibility to specify the number of cells between control planes. Now you can directly specify the number of cells on an interval between two control planes and the ratio between sizes of the first and the last cells on the interval.

Improved control planes definition. The new interface of the Create Control Planes dialog box allows you to add control planes more quickly and provides better flexibility. You can add several control planes of various orientation without leaving the Create Control Planes dialog box. Vertexes, edges, faces and coordinate system planes can be used as a reference geometry to define control plane position. You may enter the distance or use the slider or just click in the graphics area to specify the control plane position relative to the reference geometry.

MONITOR:

More detailed information about meshing and calculation. The improved progress bar and additional messages in the Log provide users with more information regarding the mesh generation and calculation.

POST-PROCESSOR:

	Offset values in surface plots. The Offset option, available in the Surface plot settings, allows to create surface plots similar to previous versions of EFD.Lab by displaying parameter values taken in the centers of fluid volumes of partial cells instead of actual values at a surface.
	Min/Max from plots. Allows you to determine the lowest and highest displayed values of a parameter from all currently shown plots and set them as Min and Max for displaying this parameter.
	Product name and version in results file. The product name and version are now stored in the results file (.fld) and can be extracted by the API functions.
	Advanced Animation tool. The new powerful and flexible Animation tool allows you to create complex and impressive animations. The Animation tool interface has been improved to be more flexible and intuitive and make the creation of animation easier and faster.The Animation tool has the following main features:

Multiple features. You can create animations involving several features such as Cut plots, 3D-Profiles, Surface plots, Flow trajectories, Particle studies.

Moving components. Your animations can contain moving components of the model. The components movement is constrained by mates specified in the assembly.

Easy control. The time line and control points allows you to control the start and end moments of animations, combine animations of different features or features with different settings.

Moving camera. You can use different views of the model and include smooth transitions between views as well as model rotation to simulate camera movement.

	Particle studies available for batch results processing. Now all Particle studies defined in the open projects are available for selection in the Batch Results Processing dialog box, which allows you to run them using automatic results processing.
	XY plots along edges. In addition to XY plots along sketches and curves, you can create a XY plot along selected edges of a model.
	Display/hide color bar. You can show or hide the Color bar feature by clicking the Display Color Bar icon or by selecting Flow Analysis, Results, Display, Color Bar.
	Consider symmetry in calculation of Surface parameters and Volume parameters. If you are using the Symmetry condition in your project, you can select the Consider entire model option in the Surface Parameters and Volume Parameters dialog boxes to see the parameter’s values extrapolated for the entire model as if the problem was calculated as a whole, without the Symmetry condition.
	Additional information in Report. The information about the CPU time used for meshing and CPU time used for calculation can be added to the Report.
	Start moment for saving results. You can specify a time moment to start periodic saving of calculation results. The start moment is specified in iterations or in physical time for transient analysis.
	Default state for the Batch Results Processing option. On the EFD.Lab Options tab available by clicking Tools, Options, Third Party you can define the default state for the Run Batch Results Processing option in the Run dialog box.
	Multiple reference geometries for Flow trajectories, Particle studies, Point parameters. You can select several faces, planes, edges, curves or sketches to start Flow trajectories or particle trajectories in the Particle study or to define Point parameters. Starting or reference points are distributed between the selected geometry entities proportional to the entities dimensions. For Point parameters you can specify an interval between points.
	New parameters available in Surface parameters and Volume parameters. New parameters were added or made available in the Surface Parameters and Volume Parameters dialog boxes. The new column added to the tables contains areas or volumes for which the parameter was calculated.

DOCUMENTATION:

	Cooler tutorial example. In the “CPU Cooler” tutorial example you will learn how to use Rotating regions to calculate flow in models containing rotating components.
	Cavitation validation example. The “Cavitation on a hydrofoil” validation example shows the EFD.Lab performance in calculating flow over a hydrofoil in a water tunnel.
	Thermoelectric cooler validation example. This validation example allows you to assess the EFD.Lab ability to simulate thermoelectric coolers.

Installation and Licensing

x64 standalone solver. A version of EFD.Lab with x64 standalone solver is now available. If you install that version, the pre- and post-processor interface will operate in the 32-bit mode as well as the solver running in the current session of EFD.Lab. The x64 solver is available only as a standalone or remote solver.