The boundary line between stability and instability is the dry adiabatic lapse rate line.
稳定的和不稳定的界限就是干的绝热垂直率线。
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Program was written in FORTRAN, basing on twodimensional heat conduction and adiabatic, constant heat flux boundary conditions. The relative error is defined.
The fluctuating amplitude of mass flow rates of branch pipeline outlets with hot wall boundary is bigger than that with adiabatic wall boundary, and the maximal fluctuating amplitude goes up to 2.16%.