TANKHYD - Interacting Tank Reservoirs

Two open reservoirs with cross-sectional areas Ai, A2 and liquid depths hi and h2 respectively are connected by a pipeline of length L and diameter D. The resulting liquid levels form a decaying oscillatory response to final steady state. Ramirez (1976) provides a detailed model derivation for this problem and shows how the problem is solved by analogue computation. The parameters are the same as those used by Ramirez. 

The mass balance for tank 1 at constant liquid density is 

Since the pipeline is of uniform diameter, the rate of momentum at the inlet is equal to that at the outlet and 

Note that the frictional force must always act in the opposite direction to that of the direction of flow and that this must be allowed for in the program. 

HYDRAULICS OF INTERACTING TANK RESERVOIRS PROBLEM OF RAMIREZ 

5 Simulation Tools and Examples of Chemical Engineering Processes 

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