From d5fd11e4c69c5c31e394cc95c7bb2b8721f7947b Mon Sep 17 00:00:00 2001
From: cfvgx <rezo-rm.w9gs3@simplelogin.com>
Date: Tue, 24 Sep 2024 20:43:47 +0200
Subject: [PATCH] Initialisation plus a bit of text already

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 .gitignore                        |  1 +
 Introduction to fluid dynamics.md | 15 +++++++++++++++
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 create mode 100644 Introduction to fluid dynamics.md

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+# Introduction to fluid dynamics
+
+## 3 main laws
+- Momentum balance
+- Mass balance
+- Energy balance
+
+## The continuum assumption
+
+Let lambda be the mean free path, L a characteristic dimension of the problem
+
+Kn = lambda/L
+
+Hypothesis : 
+If Kn<<1, it is possible to use a model based on the continuum hypothesis
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