Study Guides

Resources and references to accelerate your learning and problem-solving.

Quick Reference Introduction

A condensed guide to the selectNsolve Basic™ syntax. Perfect for printing or keeping open on a second monitor while working.

Friction Factor: Colebrook-White

Step-by-step tutorial on setting up and solving the implicit Colebrook-White equation using iterative techniques in your sheet.

Extend Google Sheets™ Native Functionality

Learn advanced techniques for combining native Google Sheets™ formulas (like IF, VLOOKUP, and standard math functions) with the raw equation-solving power of selectNsolve™. Discover how to build dynamic engineering dashboards.

Engineering Problem-Solving Workflow

Professional engineers follow a systematic approach. selectNsolve Basic™ accelerates the calculation step — but the strategy must come from you.

Friction Factor Reference

Selecting the correct friction factor formula depends on the flow regime. Use the Reynolds number to determine which equation applies:

Laminar Flow (Re < 2300)

Explicitly solvable — no iteration needed.

Turbulent Flow (Re > 4000)

Implicit — requires iterative solver.

Key Equations Cheat Sheet

Continuity

Bernoulli

Darcy-Weisbach