安捷伦EMpro内部培训资料6

o Enable “Use GPU Acceleration” option to run the simulation on GPUs
10
FDTD Only
EMPro Workshop Version 2.0
Module 6: Additional Topics
EMPro Workshop Version 2.0 1
Re-use of Previous Mesh and Simulation Data (1)
o EMPro supports the re-use of previous mesh and simulation data when
7
FEM Only
EMPro Workshop Version 2.0
Symmetry Planes
o Reduce simulation time and memory requirements for FEM simulations
Or can solve a bigger problem with less memory
“All frequencies from the frequency plan and mesh frequency” – Default, saves the field data at all frequencies (mesh and adaptive frequencies) “No field data” – No field data saved
The previous adaptive meshing is not fully converged or a lower value of delta-S is required
The previous adaptive frequency sweep is not fully converged or additional frequency (single or band) points are needed to be computed
o Sets maximum edge length of initial mesh cells o Can be automatically set based on wavelength o Can also be manually adjusted for problematic geometries
EMPro 2009
Mesh cells in the free space area are initially large and take several refinement steps to converge
EMPro 2010
Initial mesh cell size automatically reduced, resulting in fewer refinement steps to converge
“User Defined Frequencies” – Saves the field data only for single frequencies entered in the frequency plan
By default, the start and stop frequencies are also saved
o Modify delta-S or increase “Maximum number of passes” if the adaptive meshing is not fully converged o Increase the number of “Sample Points Limit” if the adaptive frequency sweep is not fully converged o Modify or add more frequencies if additional frequency data is required
Creating Bondwires with Bondwire Components
o Creating bondwires with standard drawing tools is hard
o Bondwire component allows users to create the bondwires graphically
5
FEM Only
EMPro Workshop Version 2.0
User Controlled Meshes Initial Target Mesh Size
o Click on “Advanced” tab under “Mesh/Convergence Properties”
o Reduces the size of the initial mesh cells, leading to faster convergence
4
FEM Only
EMPro Workshop Version 2.0
Removing Simulation/Field Solution Data
o Stored simulations or field solution data (Electric and Magnetic fields) can be removed to save disk space o From “Simulations” window, user can remove simulations or field solution data
o Bondwire definition (profile) can be copied or reused
Bondwire Definition
EMPro Workshive GPU Support
o FDTD Time Domain Simulation can be accelerated using GPU (Graphics Processing Unit) cards by splitting the simulation into multiple jobs and run in parallel on GPU cores (240+) 5~20 times typical simulation speed improvement Supports Accelerware CUDA and native CUDA libraries
o Electric/Magnetic symmetry planes are supported o Can be found from “Boundary Conditions Editor”
Half the size
Magnetic Symmetry Plane
8
FEM Only
EMPro Workshop Version 2.0
3
FEM Only
EMPro Workshop Version 2.0
Storing Field Data Option
o Storing field data (Electric and Magnetic fields) typically requires a big size of disk space o User can choose an option not to save the field data in the simulation setup
6
FEM Only
EMPro Workshop Version 2.0
User Controlled Meshes Initial Minimum Mesh Size
o Reduces number of mesh cells for complex CAD geometries, leading to faster solve times o Sets minimum edge length of initial mesh cells o Can be automatically set based on geometry size and Initial Target Mesh Size setting
o Click on “Simulation results to reuse” pull-down menu to select one of previous simulation results
2
FEM Only
EMPro Workshop Version 2.0
Re-use of Previous Mesh and Simulation Data (2)
“Remove Simulation” – Completely delete the simulation result
“Remove fields solution” – Only delete fields (E/H) data, but still being able to see S-parameters
Ratio of Max/Min cell edge length > 10
o Can also be manually adjusted for problematic geometries
EMPro 2010 EMPro 2009
Mesh cells in the curved area are small, resulting in longer solve time Initial mesh cell size automatically increased, resulting in fewer mesh cells and shorter solve time with minimal loss in accuracy