Accumulation of Mass
Open
System
msys(t)
The diagram below shows a
uniform-flow process
in which mass flows into and out of a system.Consider the process for an interval of time from t1 to t2, where t2 > t1.
At t1 the mass in the system is: msys(t1).
At t2 the mass in the system is: msys(t2).
If the inlet mass flow rate, , is greater than the outlet mass flow rate, , then mass accumulates within the system: msys(t2) > msys(t1).
, is greater than the outlet mass flow rate, , then mass accumulates within the system: msys(t2) > msys(t1).If the outlet mass flow rate, , is greater than the inlet mass flow rate, , then the mass within the system decreases: msys(t2) > msys(t1).
, is greater than the inlet mass flow rate, , then the mass within the system decreases: msys(t2) > msys(t1).
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