Turbomachinery 4: Three Dimensional Flow Field Analysis
From two-dimensional blade cascades to complex three-dimensional flow structures, explore how turbomachinery blades turn the flow, generate losses, and redistribute momentum, and how simplified throughflow methods connect aerodynamic theory with CFD.
Turbomachinery 3: Equations and Principles
Explore the fundamental equations and numerical principles behind turbomachinery CFD, from rotating reference frames, angular momentum, and rothalpy to turbulence modelling and boundary conditions. Learn how ANSYS TurboGrid transforms complex blade geometry into structured computational meshes, and why mesh topology, refinement, and quality are essential for reliable simulations.
Turbomachinery 2: Analysis and Performance of Turbomachinery
Turbomachinery performance and blade geometry are two descriptions of the same energy-conversion problem. This note develops total-property analysis, Euler work, compressor and turbine efficiency, similarity parameters and characteristic maps, then connects them to practical blade design using Ansys BladeGen and BladeEditor, including flow paths, spanwise layers, camber and thickness definitions, parameterization, periodic CFD domains and geometry export.
Turbomachinery 6: Analysis and design in Turbomachines
Axial compressors, axial turbines, centrifugal compressors, radial turbines and hydraulic machines are different implementations of the same turbomachinery principles. This note develops their velocity triangles, work transfer, reaction and loading before connecting ideal mean-line behaviour to real losses, diffusion, wakes, secondary flow, slip, diffusers, volutes, hydraulic head and cavitation.
Turbomachinery 1: Introduction
Turbomachinery is built around a simple idea: exchanging energy between a rotating machine and a flowing fluid. The flow physics behind that exchange, however, are anything but simple. This chapter introduces the fundamental architecture of turbines, compressors, and pumps, then explores why their internal flows are three-dimensional, turbulent, compressible, and inherently unsteady. It also introduces the role of CFD in modern turbomachinery design, from understanding secondary flows and tip-clearance effects to comparing design changes and identifying aerodynamic losses.
Combustion and Reactions Chapter 7: Multiphase Combustion and Pollutant Formation
Integrated engineering notes on multiphase combustion covering spray combustion, coal combustion, DPM modeling, pollutant formation, NOx mechanisms, radiation effects, and SCR emission-control systems used in industrial CFD simulations.
Combustion and Reactions Chapter 6: Turbulent PREMIXED Combustion
Integrated engineering notes on turbulent premixed combustion covering combustion regimes, turbulent flame speed, progress-variable and G-equation models, flame surface density approaches, flamelet-generated manifolds, and swirl-stabilized combustor physics.
Combustion and Reactions Chapter 5: Turbulent NON-PREMIXED Combustion
Concise study notes on turbulent non-premixed combustion covering mixture fraction modeling, PDF methods, combustion regimes, and practical CFD approaches including equilibrium, EDM, and flamelet models.
Combustion and Reactions Chapter 4: Turbulent Combustion
Compact engineering notes on turbulent combustion covering turbulence–chemistry interaction, Damköhler regimes, DNS/RANS/LES modeling, Favre averaging, and PDF-based approaches for realistic CFD simulations
Combustion and Reactions Chapter 3: Laminar Non-premixed flames
Clear engineering notes on laminar non-premixed (diffusion) flames, covering mixture fraction theory, flame structure, fast vs finite-rate chemistry, and CFD modeling approaches, with insights from experiments and flamelet concepts.
Combustion and Reactions Chapter 2: Laminar premixed flames
Concise engineering notes on laminar premixed flames and their role in combustion modeling. The chapter explains flame structure, flame speed, combustion regimes, progress variables, and the relationship between chemical kinetics and transport processes. It also introduces CFD modeling strategies for premixed combustion in ANSYS Fluent, including combustion models, detailed chemical mechanisms, CHEMKIN integration, and chemistry acceleration techniques used to handle stiff reaction systems
Combustion and Reactions Chapter 1: Chemical Reaction and Transport
Foundational notes on chemical kinetics, thermodynamics, transport, ignition, and characteristic time scales in reacting flows, forming the backbone of combustion modeling.
Spacetraders 4: Visualizing the starting system
In this entry, I build a simple visual map of my starting SpaceTraders system. Using real system coordinates from the API, I plot waypoints in 2D and extend the idea into 3D by introducing a synthetic Z dimension to separate overlapping locations. Along the way, I run into a few surprisingly tricky problems around data grouping, symmetry, and Matplotlib’s 3D quirks—and briefly break my “no AI while coding” rule to get unstuck. The result is a compact 2D+3D system overview that finally makes the universe feel tangible instead of abstract.
Spacetraders 3: Getting to know the game
SpaceTraders is more than a collection of API endpoints. It’s a persistent simulation of a space economy, with ships, contracts, markets, and delayed consequences built directly into its design. This post takes a step back from implementation details and looks at how the game world is structured, how its main systems interact, and why understanding these mechanics upfront makes automation and data-driven play much easier later on.
Introduction to CFD Chapter 8: Advanced meshing and automation
Advanced meshing and automation notes explaining how professional CFD workflows handle complex geometry, mesh quality, and repeatable simulations.
Introduction to CFD Chapter 7: Numerical performance and reliability
A practical CFD chapter explaining numerical accuracy, error sources, convergence, validation, and how to judge simulation reliability in engineering applications.
Introduction to CFD Chapter 6: Compressible Flow
Concise compressible flow notes covering Mach number interpretation, shock and expansion phenomena, and numerical strategies for high-speed CFD.
Introduction to CFD Chapter 5: Introduction to Turbulence and RANS Modeling
An introductory turbulence chapter explaining why statistical modeling is required in CFD and how RANS–Boussinesq closures make turbulent flow simulations feasible in engineering practice.
Introduction to CFD Chapter 4: Fundamentals of the Finite Volume Method
Core CFD notes explaining how the finite volume method enforces conservation, couples pressure and velocity, and achieves stable numerical solutions
Introduction to CFD Chapter 3: Basic Incompressible Flow Analysis
Foundational incompressible flow notes covering dimensional analysis, boundary layers, and simplified flow archetypes used to guide CFD modeling