From ca03a1445898b90b2904827e07f817fda0a840d3 Mon Sep 17 00:00:00 2001 From: Alexandre Umpierre Date: Wed, 17 Jul 2024 23:03:54 -0300 Subject: [PATCH] Update README.md --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 47059e0..a1e8de8 100644 --- a/README.md +++ b/README.md @@ -381,7 +381,7 @@ Compute the Reynolds number *Re* and the Darcy friction factor *f* given the sam `hQthk2fDRe` computes both the Darcy friction factor *f* and the Reynolds number *Re* given the head loss *h*, the pipe's length *L* and roughness *k*, the volumetric flow rate *Q*, the gravitational acceleration *g*, and the fluid's density *ρ* and dynamic viscosity *μ*. Replacing hydraulic diameter *D* in the Darcy-Weisbach equation by the Reynolds number *Re*, $$ -{Re^5 f}={2ghQ^3 \over\displaystyle {{\left[ {\pi \over 4} \right]}^3 {\left[ {\mu \over \rho} \right]}^5 L}} +{Re^5 f}={2ghQ^3 \over\displaystyle {\left[ {\pi \over 4} \right]^3 {\left[ {\mu \over \rho} \right]}^5 L}} $$ Along with the Colebrook-White equation, this version of the Darcy-Weisbach equation produces a system of two equations with two variables. Solution is computed iteratively.