Delta by Delta
For engineers, students, and simulation practitioners
Animated derivations of the math behind simulation — CFD, linear algebra, machine learning. Intuition first, then the full math, nothing skipped.
Watch on YouTube →deltabydelta.com
Delta by Delta
The derivation your textbook skipped.
One engineering question at a time, explained from first principles. Each topic ships as a pack: a PDF guide that walks a beginner in from zero, an Excel sheet with the calculation laid out, and a code template you can run.
on YouTube
The channel
downloads
Topic packs
One engineering topic per pack: a beginner PDF guide, an Excel sheet, and a code template.
Tuning a 3-Element Windkessel
The lumped model used as an outlet boundary condition in arterial simulations. Learn what its three parameters (Rc, Rd, C) each control and follow the loop that tunes them to a target blood pressure. The spreadsheet marches the model beat by beat; the guide derives it from the circuit and works one example end to end.