*3.1. Constraints*

Since there are several SRM dimensions, there must be certain constraints on them to prevent any non-logical values of variables with non-related physical meanings. The dimensions are checked to satisfy the following constraints:

$$2D\_{sh} + 2b\_{Ty} + 2h\_I + 2\mathfrak{g} = D \tag{26}$$

$$D + 2b\_{\!\!\!y} + 2h\_{\!\!s} = D\_{\!\!\!u} \tag{27}$$

$$
\beta\_r > \beta\_s \tag{28}
$$

$$\frac{D}{2}(1-\frac{\beta\_r P\_r}{2\pi}) \ge h\_r. \tag{29}$$

It is also needed to specify certain limits to each variable (dimension). The maximum and minimum limits are then added to be constraints for all of the variables. If it is needed to keep a certain dimension fixed, this can be simply achieved by setting both the minimum and maximum limits to the desired value.
