System of Units
===============

MFIX-Exa adopts the International System of Units (SI). Simulations have to be
set up accordingly. In the following table we provide a list of some of the
physical quantities we can specify in the input file and their correspondent
units.

+----------------------------+-----------------------------------------+
| Physical quantity          | MFIX-Exa SI unit                        |
+============================+=========================================+
| amount of substance        | mole [:math:`mol`]                      |
+----------------------------+-----------------------------------------+
| length                     | meter [:math:`m`]                       |
+----------------------------+-----------------------------------------+
| mass                       | kilogram [:math:`kg`]                   |
+----------------------------+-----------------------------------------+
| time                       | second [:math:`s`]                      |
+----------------------------+-----------------------------------------+
| force                      | Newton [:math:`N`]                      |
+----------------------------+-----------------------------------------+
| temperature                | Kelvin [:math:`K`]                      |
+----------------------------+-----------------------------------------+
| pressure                   | Pascal [:math:`Pa`]                     |
+----------------------------+-----------------------------------------+
| energy                     | Joule [:math:`J`]                       |
+----------------------------+-----------------------------------------+
| power                      | Watt [:math:`W`]                        |
+----------------------------+-----------------------------------------+
| density                    | [:math:`kg \cdot m^{-3}`]               |
+----------------------------+-----------------------------------------+
| velocity                   | [:math:`m \cdot s^{-1}`]                |
+----------------------------+-----------------------------------------+
| dynamic viscosity          | [:math:`Pa \cdot s`]                    |
+----------------------------+-----------------------------------------+
| diffusivity                | [:math:`m^2 \cdot s^{-1}`]              |
+----------------------------+-----------------------------------------+
| specific heat capacity     | [:math:`J \cdot kg^{-1} \cdot K^{-1}`]  |
+----------------------------+-----------------------------------------+
| thermal conductivity       | [:math:`W \cdot m^{-1} \cdot K^{-1}`]   |
+----------------------------+-----------------------------------------+
| spring coefficient         | [:math:`N \cdot m^{-1}`]                |
+----------------------------+-----------------------------------------+
| molecular weight           | [:math:`kg \cdot mol^{-1}`]             |
+----------------------------+-----------------------------------------+
| heat of formation          | [:math:`J \cdot kg^{-1}`]               |
+----------------------------+-----------------------------------------+
| chemical reaction rate     | [:math:`mol \cdot m^{-3} \cdot s^{-1}`] |
+----------------------------+-----------------------------------------+