In some calculations (derivatives) we need certain fluid properties (i.e. state values) that could change with the propagation along a branch, but must be used to derive other values (e.g. pressure). Of course this is strongly related to the finite volume method we use and often a question of good discretization, but still we need a way to define such a state value for the whole finite volume of the considered branch. So, we should have a look at how to best describe the properties density, viscosity and heat capacity (others?) for the whole branch in order to not make our calculations a bad approach in case of "not ideal" discretization. The current implementation can be found in the properties toolbox.
In some calculations (derivatives) we need certain fluid properties (i.e. state values) that could change with the propagation along a branch, but must be used to derive other values (e.g. pressure). Of course this is strongly related to the finite volume method we use and often a question of good discretization, but still we need a way to define such a state value for the whole finite volume of the considered branch. So, we should have a look at how to best describe the properties density, viscosity and heat capacity (others?) for the whole branch in order to not make our calculations a bad approach in case of "not ideal" discretization. The current implementation can be found in the properties toolbox.