# Result Table - Reservoir

The available results for a known pressure node are the same for each possible phase state. Possible results are shown below: -- ID -- (aka User Number): All flowsheet elements have a unique number that is assigned by FluidFlow. It is not possible for the user to change this number because it is used as a unique identifier by the scripting module. Node numbering starts from 1, incrementing upwards, and pipe numbering starts from -1, decrementing downwards. Composition Mass %: This is the fluid mass composition. If there are inflows then the composition displayed will be the net composition, if all flows are out then the composition displayed here will be the entered composition. Density: The fluid density at the reservoir node. Density depends on temperature and pressure of the fluid. Stagnation density is shown at this type of boundary. Element Type: The name FluidFlow uses to describe the element. Fluid Phase: The phase state that exists at the reservoir node. Net Flow: This is the net flow that FluidFlow has calculated will be flowing either into or out of the node. Since there can be several branches flowing in different directions, the net flow represents the total flow into or out from the reservoir. Piezometric Pressure: The piezometric pressure at the vessel/reservoir surface. This value is defined as the following two terms in the energy equation (z 1 r 1 g + p 1) Stagnation Pressure: The stagnation pressure at the reservoir node. This is the sum of kinetic and pressure energies (static pressure + velocity pressure). For inflows and outflows this is equal to the pressure specified in the Input Editor. Temperature: This is the stagnation temperature at the reservoir node. If there are inflows then the temperature displayed will be the net temperature, if all flows are out then the temperature displayed here will be the entered temperature. Viscosity: The fluid dynamic viscosity at the reservoir node. Viscosity is a measure of the resistance of the fluid to deformation.