Computes the average of a variable or expression on the specified
2D location. The massFlowAve function enables
you to select the fluids to use for the calculation. The returned
result is the average variable or expression value, evaluated according
to the formula:
 | (15–3) |
where 
represents the variable or expression
being averaged and 
represents the local mass flow
(net local mass flow if more than one fluid is selected). Each summation
term is evaluated on, and corresponds to, a node on the 2D locator.
The mass flow for each term is derived from summing contributions
from the surrounding solver integration points. As a result, the denominator
evaluates to the net mass flow through the 2D locator.
In cases where there is significant flow, but little or no net
flow through the 2D locator (as can happen with recirculation), the
denominator of the averaging formula becomes small, and the resulting
average value may become adversely affected. In such cases, the massFlowAveAbs (see massFlowAveAbs) function
is a viable alternative to the massFlowAve function.
[<Phase>.]massFlowAve(<Variable|Expression>)@<Location>
where:
[<Phase>.]is an optional prefix that is not required for single-phase flows. For details, see CEL Functions with Multiphase Flow.<Variable|Expression>is a variable or expression.<Location>is any fluid surface (such as Inlets, Outlets, Openings and fluid-fluid interfaces) or injection region. For an injection region, the mass flow at each affected vertex is used. An error is raised if the location specified is not 2D.
massFlowAve(Density)@Plane1 calculates
the average density on Plane1 weighted by the
mass flow at each point on the location.
Examples:
Tools > Function Calculator Example
This example calculates the average velocity on
Plane1weighted by the mass flow for all fluids assigned to each point onPlane1:Function:
massFlowAve, Location:Plane1, Variable:Velocity, Phase:All FluidsTools > Command Editor Example
>calculate massFlowAve, <Variable|Expression>, <Location>, [<Phase>]