# Colebrook Equation App

**URL:** <https://community.glideapps.com/t/colebrook-equation-app/16124>\
**Category:** Project Showcase\
**Created:** [September 21, 2020, 7:39am UTC](https://community.glideapps.com/t/colebrook-equation-app/16124 "2020-09-21T07:39:04Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![manyone](https://avatars.discourse-cdn.com/v4/letter/m/ee59a6/32.png) [@manyone](https://community.glideapps.com/u/manyone)\
**Post date:** [September 21, 2020, 7:39am UTC](https://community.glideapps.com/t/colebrook-equation-app/16124/1 "2020-09-21T07:39:04Z")

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i just published my first glideapp!

> **[ColebrookWhite](https://colebrook.glideapp.io/)**
>
> The Colebrook White equation is used to calculate the Darcy-Weisbach friction factor in gas pipelines of turbulent flow. This version is valid only for Reynolds Number \> 4000.

it uses an iterative method to arrive at the solution without using the solver add on. it uses multiple steps (rows) until the difference between the current and prior values is zero after a fixed number of steps.