Maxwell SV Getting Started: A 2D Electrostatic Problem - LES

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Getting Started: A 2D Electrostatic Problem Sample Problem After starting the software and introducing the Executive Commands window, this guide steps you through the setup, solution, and analysis of a simple electrostatic problem. The sample � problem, shown below, is an electrically insulated structure that includes the following: • Two microstrip lines, one set to +1 volt, and the other set to -1 volt. • A substrate. • A ground plane. In this guide, you will draw, set up, and solve the sample microstrip problem shown below. Detailed dimensions and instructions for drawing this model are given in Chapter 4, “Creating the Model.” Microstrips Substrate Ground Plane 1-2 Introduction
General Procedure Getting Started: A 2D Electrostatic Problem Follows this general procedure when using the simulator to solve 2D problems: 1. Use the Solver command to specify which of the following electric or magnetic field quantities to compute: • Electrostatic • Magnetostatic • Eddy Current • DC Conduction • AC Conduction • Eddy Axial 2. Use the Drawing command to select one of the following model types: XY Plane Visualizes cartesian models as sweeping perpendicularly to the cross-section. RZ Plane Visualizes axisymmetric models as revolving around an axis of symmetry in the cross-section. 3. Use the Define Model command to access the following options: Draw Model Allows you to access the 2D Modeler and draw the objects that make up the geometric model. Group Objects Allows you to group discrete objects that are actually one electrical object. For instance, two terminations of a conductor that are drawn as separate objects in the cross-section can be grouped to represent one conductor. Couple Model Allows you to define thermal coupling for a project. 4. Use the Setup Materials command to assign materials to all objects in the geometric model. 5. Use the Setup Boundaries/Sources command to define the boundaries and sources for the problem. 6. Use the Setup Executive Parameters command to instruct the simulator to compute the � following special quantities: • Matrix (capacitance, inductance, admittance, impedance, or conductance matrix, � depending on the selected solver) • Force • Torque • Flux Linkage • Current Flow 7. Use the Setup Solution Options command to specify how the solution is computed. 8. Use the Solve command to solve for the appropriate field quantities. For electrostatic � problems, the simulator computes �, the electric potential, from which it derives E and D. 9. Use the Post Process command to analyze the solution, as follows: • Plot the field solution. Common quantities (such as �, E, and D) are directly accessible Introduction 1-3
Page 1 and 2: November 2002 Maxwell ® 2D Student
Page 3 and 4: Printing History Getting Started: A
Page 5 and 6: Typeface Conventions Getting Starte
Page 7 and 8: Table of Contents 1. Introduction .
Page 9 and 10: Getting Started: A 2D Electrostatic
Page 11: Introduction This guide is a tutori
Page 15 and 16: Results to Expect Getting Started:
Page 17 and 18: Creating the Microstrip Project Thi
Page 19 and 20: Create a Project Directory Getting
Page 21 and 22: Getting Started: A 2D Electrostatic
Page 23 and 24: Accessing the Software In the last
Page 25 and 26: Executive Commands Window Getting S
Page 27 and 28: Creating the Model In the last chap
Page 29 and 30: Screen Layout The following section
Page 31 and 32: Set Up the Drawing Region The first
Page 33 and 34: Object window appears. Getting Star
Page 35 and 36: Draw a Rectangle Create a rectangle
Page 37 and 38: Create the Ground Plane The last ob
Page 39 and 40: Completed Geometry The geometric mo
Page 41 and 42: Defining Materials and Boundaries N
Page 43 and 44: Assign a Material to the Substrate
Page 45 and 46: Exit the Material Manager Getting S
Page 47 and 48: Types of Boundary Conditions and So
Page 49 and 50: Set the Voltage on the Ground Plane
Page 51 and 52: Generating a Solution Now that you
Page 53 and 54: Access the Setup Solution Menu Gett
Page 55 and 56: Specify the Solver Choice Getting S
Page 57 and 58: Completed Solutions Getting Started
Page 59 and 60: Plotting Convergence Data Getting S
Page 61 and 62: Analyzing the Solution Now that you
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Menu Bar Getting Started: A 2D Elec
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5. Click OK. The Scalar Surface Plo
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Getting Started: A 2D Electrostatic
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Calculate the Dot Product Calculate
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Numerics 2D Modeler accessing 4-2 e
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Group Objects 1-3, 4-13 I ICCG solv
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CPU time 6-10 criteria for computin
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Maxwell SV Getting Started: A 2D Electrostatic Problem - LES

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