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How to Compute Power Spectrum Density (PSD) from Time Series Data Using Python

Mark Lytell
by Mark Lytell
on September 05, 2025

Introduction Determination of the life of a mechanical system subject to vibrational loading is often of critical importance. One source of vibrational loading is due to vehicle transport on a bumpy ...

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September 05, 2025 • 6 min read
Ansys Zemax: Understanding Basic Surface Types for Beginners
Zemax, Optical Simulations, 2025 R2, Surface Type
August 29, 2025 • 6 min read
Ansys Discovery Simulation: Multiphysics Simulation of Thermofluid Systems
Radiation, Ansys Discovery, 2025 R2, Conjugate Heat Transfer
August 28, 2025 • 5 min read
From Objective to Optimized Design: Web App Generation Powered by Stochos and GenAI
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August 28, 2025 • 6 min read
Finding maximum surface rotations in a harmonic analysis in Ansys Mechancial
APDL, linear Dynamics, Harmonic Response, ANSYS Mechanical, Rotation, 2025 R2
August 26, 2025 • 4 min read
Ansys FreeFlow and EnSight: Visualizing Heat Transfer in a Stirred Tank
SPH, heat transfer, 2025 R2, FreeFlow
August 22, 2025 • 7 min read
One-Way vs. Two-Way Coupling: Busbar Thermal Analysis in Ansys Maxwell & Icepak
Maxwell, icepak, coupled analysis, 2025R2
August 22, 2025 • 7 min read
DC IR Drop Analysis Using ANSYS SIwave
SIwave, Power Integrity, DCIR, Power planes, 2025 R1
August 22, 2025 • 6 min read
Retrieve and Transform Reaction Force Components in Workbench LS-DYNA
Python, Scripting, Ls-Dyna, FEA, Structural Analysis, Workbench, Explicit dynamics
August 22, 2025 • 6 min read
Simulating Electric Motor Cooling with Ansys FreeFlow: Oil Spray and Water Jacket Methods
Cooling, Electric Motors, FreeFlow, Electric Vehicles
August 20, 2025 • 4 min read
How to Archive a Group of Ansys Workbench Projects Using Python
Python, FEA, Structural Analysis, Workbench, PyANSYS, PyWorkbench, 2025 R2
August 19, 2025 • 10 min read
Begin Zemax: First Lens Design
Zemax, Optical Simulations, Optics, Beginner, ray tracing, Lens Design
August 18, 2025 • 7 min read
From Antenna to Airframe: A High-Fidelity Workflow for Aircraft EMC Simulation with HFSS and EMA3D
HFSS, EMA3D, EMC, EMC Plus
August 18, 2025 • 8 min read
Combining Static and Harmonic Stress Analyses for Fatigue Assessment Using Ansys and nCode DesignLife
Static Structural, Harmonic Response, Structural Analysis, ANSYS Mechanical, Fatigue Analysis, nCode, 2025 R1
August 14, 2025 • 10 min read
From Datasheet to Demagnetization: A Guide to Magnetizing N48 Magnets in Ansys Maxwell
Ansys Maxwell, demagnetization, Magnetization, magnetostatic, 2025R2
August 14, 2025 • 12 min read
Lens Design in Zemax - Aberration Theory
Zemax, Aberrations, ray tracing, Seidel, Lens Design
August 12, 2025 • 9 min read
Flip-Chip Package Theta-JA Thermal Resistance Characterization Using Ansys Fluent
Electronics Reliability, heat transfer, ANSYS fluent, Flip-chip, theta-JA
August 11, 2025 • 7 min read
Singular Value Decomposition Reduced Order Model for Battery Module
Fluent, Reduced Order modeling (ROM), TwinBuilder, Digital Twin
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Getting Started with Ansys FreeFlow: Modeling a Stirred Tank
mixing, SPH, FreeFlow
August 11, 2025 • 5 min read
SIW Bandpass Filter Design and Optimization Using SynMatrix
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August 08, 2025 • 9 min read
Mechanical Stress Analysis of High-Speed Electric Motors Using Ansys Mechanical and Motor-CAD
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August 05, 2025 • 7 min read
Acoustic Analysis in Ansys Mechanical
Modal Analysis, Modal-based Methods, Harmonic Response, Structural Analysis, ANSYS Mechanical, Acoustics
August 05, 2025 • 5 min read
Creating a Reduced Order Model for Vortex Prediction in Stirred Tank
CFD, Reduced Order modeling (ROM), Vortex Formation, Stirred Tank
August 01, 2025 • 15 min read
Designing a 3-Phase Inverter in Ansys Simplorer and Coupling with Maxwell FEA for a 160kW PMSM
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July 31, 2025 • 10 min read
Working with STL Files in Ansys Discovery: Preparing Geometry for Simulation
CFD, FEA, Discovery, Ansys Discovery, stl, SubD, facet
July 30, 2025 • 8 min read
PCIe Gen4 Signal Integrity Analysis using ANSYS SIwave & Circuit Tools
signal integrity, SIwave, QuickEye, SIwizard, VerifyEye, Transient Analysis, circuit, PCIe, 2025 R1
July 29, 2025 • 10 min read
ANSYS HFSS For Designing High-Performance Phased Antennas Arrays for Satellite Communication
Antenna Design, HFSS, antenna array, SBR+, circuit, Satellite
July 29, 2025 • 8 min read
Unlocking the Power of Induction Heating Simulation with ANSYS
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July 28, 2025 • 4 min read
Modeling Wireless Charging with Permanent Magnets in ANSYS Maxwell
wireless power, Ansys Maxwell
July 28, 2025 • 8 min read
Brain Implant Thermal Simulation Using Ansys Fluent
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July 28, 2025 • 7 min read
Flip-Chip Package Theta-JB and Theta-JC Thermal Resistance Characterization using Ansys Fluent
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July 28, 2025 • 5 min read
Modeling Bubble Dynamics in a Stirred Tank Reactor Using ANSYS Fluent and Population Balance Model
Multiphase flow, ANSYS fluent, Particle flow, 2025 R2
July 28, 2025 • 53 min read
List of more than 650 Standards for SIwizard/SIwave
SIwave, SIwizard, Sources
July 25, 2025 • 5 min read
Modeling Wear in Ansys Mechanical
Mechanical, FEA, Static Structural, Structural Analysis, Structural integrity, ANSYS Mechanical, Postprocessing, Archard Wear
July 25, 2025 • 5 min read
Simulation of metal sintering process using DEM
Discrete Element Method, Ansys Rocky, Manufacturing, Sintering
July 25, 2025 • 7 min read
Modeling of a Buck Converter at the System Level with ANSYS
Ansys PExprt, Buck converter, Ansys Simplorer
July 24, 2025 • 6 min read
Getting Started with PyAnsys: A PyMechanical Workflow for Beginners
Python, Static Structural, Structural Analysis, Static Structural Analysis, ANSYS Mechanical, PyANSYS, PyMechanical
July 23, 2025 • 16 min read
How to Simulate Electric Motor Temperature  Using Ansys Motor-CAD and Icepak
CFD, electric motor, icepak, Ansys Motor-CAD, Electro-thermal
July 22, 2025 • 4 min read
TX of a Non-Coherent Optical Transceivers
HFSS, optical transceivers, EML, coherent, EMA
July 22, 2025 • 5 min read
Key Enhancements in Ansys Discovery 2025R2: Highlights for CFD Simulation
CFD, meshing, Ansys Discovery, 2025 R2
July 21, 2025 • 12 min read
Ansys Digital Twin: From Virtual Models to Real-World Insight
Reduced Order modeling (ROM), TwinBuilder, Ansys Maxwell, Digital Twin, Dynamic ROM
July 21, 2025 • 5 min read
Simulation of Steady Vortex in a Stirred Tank using Ansys Fluent Software Parametric Workflow
CFD, mixing, ANSYS fluent, Vortex Formation
July 16, 2025 • 4 min read
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Ansys Maxwell, Electric Motors, Current Dataset
July 15, 2025 • 4 min read
Scripting for Postprocessing in Ansys Icepak AEDT
CFD, Scripting, Thermal management, icepack
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External Aerodynamics over Ahmed Body Benchmark with Ansys Discovery in Explore Mode
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July 11, 2025 • 2 min read
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Fluent, GPU, GPU solver, ANSYS fluent, 2025 R2
July 10, 2025 • 10 min read
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July 08, 2025 • 6 min read
ANSYS Maxwell: Create Ready-to-Run 3D Axial Flux Motor Models
Ansys Maxwell, Ansys Motors, Axial Flux Motors
July 04, 2025 • 5 min read
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APDL, Modal Analysis, linear Dynamics, Modal-based Methods, Harmonic Response, Structural Analysis, ANSYS Mechanical
July 03, 2025 • 4 min read
Modeling Piezoelectric Actuators in Ansys Fluent
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June 30, 2025 • 4 min read
Modeling Liquid Cooling for Inverters with Ansys IcePak AEDT
AEDT, heat transfer, icepack
June 30, 2025 • 5 min read
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Antenna Design, HFSS, antenna array, HFSS 3D Layout, EMI, Emission control, Emissions, Radiated emissions
June 30, 2025 • 8 min read
Explore Battery Cold Plate Concepts Via Ansys Discovery CFD Simulation
Discovery, battery, battery modeling, Ansys Discovery, cold plate
June 27, 2025 • 4 min read
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HFSS, Maxwell, AEDT, fields calculator
June 27, 2025 • 6 min read
Geometry Preparation using Ansys Discovery for Beginners
Discovery, Preprocessing, CAD, Ansys Discovery, Geometry Generation, Defeaturing
June 27, 2025 • 4 min read
Coil Co-Simulation Using HFSS and Circuit
HFSS, AEDT, Coil, Tuning
June 26, 2025 • 3 min read
Sintering Simulation in Ansys Mechanical
Structural integrity, ANSYS Mechanical, Simulation, Additive Manufacturing, Manufacturing
June 26, 2025 • 6 min read
From Brute Force to Smart Search: A New Way to Optimize Electric Motors
Design Optimization, Ansys Motor-CAD, Stochos
June 26, 2025 • 5 min read
3D Geometry Prediction using Data from Probabilistic Optimization: A Stochos App Application
Stochos, Probabilistic Optimization, Geometry Generation
June 25, 2025 • 9 min read
Oil Slicks - 3-phase stratified and free surface flow CFX simulation
Multiphase flow, cfx, oil and gas, Multi-phase, Ansys CFX
June 25, 2025 • 1 min read
Designing High-Performance Satellite Antennas & RF Systems
Antenna Design, HFSS, antenna array, rf, circuit, Satellite
June 23, 2025 • 5 min read
ANSYS MotorCAD: Assign Different Magnetization Patterns for Permanent Magnet Motors
Torque, Ansys Motor-CAD, Magnetization, Halbach array
June 22, 2025 • 3 min read
Twin Builder CFD Example: Building, Validating, and Evaluating Static ROM
CFD, Reduced Order modeling (ROM), TwinBuilder, Digital Twin
June 13, 2025 • 8 min read
Automating CFD with PyFluent
CFD, Python, ANSYS fluent, PyANSYS
June 13, 2025 • 2 min read
Coaxial Cable Simulation in Ansys HFSS
HFSS, AEDT, Cables, Coaxial
June 12, 2025 • 4 min read
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FDTD, Lumerical GPU, Ansys Cloud Burst
June 11, 2025 • 4 min read
Blade Modeling Workflow from Geometry to Mesh to Simulation
CFD, Ansys CFX, CFD-Post, Turbomachinery, Blade Modeler, TurboGrid
June 11, 2025 • 10 min read
Polarization States for Zemax: Jones Calculus, Part II
Zemax, Polarization, Jones, Macro, ZPL
June 11, 2025 • 5 min read
Using PyAEDT to design a parametrized log periodic dipole antenna LPDA
Antenna Design, HFSS, pyAEDT, log periodic, dipole
June 10, 2025 • 11 min read
Polarization States for Zemax: Jones Calculus Intro, Part I
Zemax, Polarization, Jones
June 06, 2025 • 4 min read
Coaxial Resonator Eigenmode Analysis in HFSS
HFSS, AEDT, Coaxial Cavity, Eigenmode
June 05, 2025 • 8 min read
Battery Module Simulation - Linear Time Invariant Reduced Order Models
Reduced Order modeling (ROM), TwinBuilder, battery, battery modeling, Thermal Analysis, Digital Twin
June 05, 2025 • 7 min read
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June 02, 2025 • 3 min read
Spacecraft Charging & ESD: How Simulation Prevents Million-Dollar Failures
aerospace, EMC Plus, Charge Plus, ESD, SpacecraftCharging, Space
May 30, 2025 • 7 min read
Enabling Additional CPU Cores and GPU in Ansys Electronics Desktop
HFSS, HPC, Maxwell, AEDT, GPU, CPU
May 30, 2025 • 3 min read
On-the-Fly Design and Analysis using Ansys Discovery
CFD, HVAC, Ansys, fluid flow, Simulation, HVAC Design
May 28, 2025 • 4 min read
Capacitance Extraction Using Ansys Q3D
MEMS, Q3D, Capacitance
May 27, 2025 • 4 min read
Dynamic Mesh Motion in Ansys Fluent
CFD, Fluent, Fluent Mesh
May 27, 2025 • 8 min read
HFSS-IC: Features and Advantages
HFSS 3D Layout, IC Mode
May 26, 2025 • 4 min read
Ansys Maxwell: Magnetostatic 3D Analysis of Coil and Magnet
Torque, Magnetic Material, Ansys Maxwell
May 22, 2025 • 6 min read
Ansys Motion. Basic guide for Mechanical users.
Ansys Motion, rigid body dynamics, Structural Analysis, ANSYS Mechanical, Setup Productivity, 2025 R1
May 21, 2025 • 6 min read
Enhancing CFD Convergence Criteria with the Coefficient of Variation
Convergence, Ansys CFX, Best Practices, Coefficient of Variation
May 20, 2025 • 5 min read
Get Joint Reaction Forces and Moments Using Mechanical Scripting
FEA, Structural Analysis, ANSYS Mechanical, PyANSYS, PyMechanical
May 19, 2025 • 6 min read
Ansys Workbench License Configuration - Understanding How to Set Your License Preferences
licensing, SpaceClaim, Workbench, ANSYS Mechanical, Ansys Discovery
May 16, 2025 • 5 min read
Probabilistic Inference for Bayesian Optimization Application on a 2D Benchmark Case
Fluent, optimization, Ansys OptiSlang, Probabilistic Optimization, PI-BO
May 14, 2025 • 7 min read
Evaluating Conveyor Belt Systems using DEM Simulation
Ansys Rocky, DEM, industrial equipment
May 14, 2025 • 6 min read
Mesh Dependence Study for Package/Heat Sink Configuration with AEDT Icepak
Electronics, icepak, Cooling, Thermal Analysis
May 13, 2025 • 7 min read
Stretch Blow Molding Simulation in Fluent Workspace Polyflow
polyflow, blow molding
May 13, 2025 • 6 min read
Injection Blow Molding Simulation in Fluent Workspace Polyflow
polyflow, blow molding
May 13, 2025 • 6 min read
Pressing and Thermoforming Simulation in Fluent Workspace Polyflow
polyflow, blow molding
May 06, 2025 • 8 min read
Thermal Analysis of High Power RF Coaxial Filter Using ANSYS AEDT (Two Way Coupling)
HFSS, Thermal, Filter Design and simulation, AEDT, Electromagnetics, EM and Thermal Coupling, Multi-Physics Coupling, Multi-Physics, Thermal Analysis, Filter, Electronics thermal management, Thermal management, Thermal simulation, Coaxial, icepack
May 05, 2025 • 6 min read
Thermal Analysis of High Power Coaxial RF Filter Using ANSYS AEDT (One Way Coupling)
HFSS, Thermal, Filter Design and simulation, Electronic cooling, AEDT, Electromagnetics, EM and Thermal Coupling, Multi-Physics Coupling, Multi-Physics, Thermal Analysis, Filter, Thermal management, Thermal simulation, icepack
May 02, 2025 • 2 min read
Battery Cell and Electrode Performance
CFD, electrochemistry, Ansys OptiSlang, battery, battery modeling
May 01, 2025 • 6 min read
Machine Learning on CFD Predictions Part-3: Use of Stochos for genAI Application on a Benchmark Case
CFD, Machine Learning, Stochos, genAI
April 28, 2025 • 7 min read
Generating Eye Diagram In ANSYS AEDT By Linking The HFSS 3D Layout and ANSYS Circuit Tools Based on Extracting SYZ Parameters Using The SIwave Solver
HFSS, HFSS 3D Layout, pcb, signal integrity, SIwave, AEDT, QuickEye, Transient Analysis, circuit
April 27, 2025 • 10 min read
SynMatrix: SIW bandpass filter
Filter Design and simulation, Filter, SynMatrix, SIW
April 24, 2025 • 7 min read
Predicting Serial Channel Performance and Generating Eye Diagram In ANSYS AEDT Using The ANSYS SIwave Solver
HFSS, HFSS 3D Layout, pcb, signal integrity, SIwave, QuickEye, Transient Analysis, circuit
April 18, 2025 • 7 min read
Battery Equivalent Circuit Model Simulation in Twin Builder
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April 11, 2025 • 7 min read
CPU vs GPU Computing: Which Is Better for CFD Simulation?
CFD, GPU, CPU, Simulation, Cloud

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