From 94e2ea8a2b7a1325abd6c4d23fb44eaaf26a6db4 Mon Sep 17 00:00:00 2001
From: Ivan Mitrichev <imitrichev@users.noreply.github.com>
Date: Sun, 12 Nov 2023 22:33:55 +0300
Subject: [PATCH] fix momentum eq. in pfr docs

surface to volume ratio, A/V, is already taken into account in \dot m_s
---
 pages/science/reactors/pfr.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pages/science/reactors/pfr.rst b/pages/science/reactors/pfr.rst
index 38b48f51..b9464828 100644
--- a/pages/science/reactors/pfr.rst
+++ b/pages/science/reactors/pfr.rst
@@ -83,7 +83,7 @@ overall mass conservation equation for the reactor can then be written as:
 
 .. math::
 
-  \rho u \frac{du}{dz} = - u \sum_j \frac{A_{s,j}}{V} \dot{m}_s - \frac{dp}{dz}
+  \rho u \frac{du}{dz} = - u \dot{m}_s - \frac{dp}{dz}
   \tag{2}
 
 *Energy conservation:*