.LibRAS.Tanks.OpenTank

Information

Model of a tank that is open to the environment at the fixed pressure p_ambient. The tank is filled with a single or multiple-substance liquid, assumed to have uniform temperature and mass fractions.

At the top of the tank over the maximal fill level height a vector of FluidPorts, called topPorts, is present. The assumption is made that fluid flows always in to the tank via these ports (and never back in to the connector).

The vector of connectors ports are fluid ports at the bottom and side of the tank at a definable height. Fluid can flow either out of or in to this port. The fluid level of the tank may be below one of these ports. This case is approximated by introducing a large pressure flow coefficient so that the mass flow rate through this port is very small in this case.

If the tank starts to over flow (i.e., level > height), an assertion is triggered.

When the diagram layer is open in the plot environment, the level of the tank is dynamically visualized. Note, the speed of the diagram animation in Dymola can be set via command animationSpeed(), e.g., animationSpeed(speed = 10)

Contents

Name	Description
HeatTransfer	Wall heat transfer

Revisions

• Dec. 12, 2008 by Ruediger Franke: replace energy and mass balances with common definition in BaseClasses.PartialLumpedVolume
• Dec. 8, 2008 by Michael Wetter (LBNL):
  Implemented trace substances and missing equation for outflow of multi substance media at top port.
• Jul. 29, 2006 by Martin Otter (DLR):
  Improved handling of ports that are above the fluid level and simpler implementation.
• Jan. 6, 2006 by Katja Poschlad, Manuel Remelhe (AST Uni Dortmund), Martin Otter (DLR):
  Implementation based on former tank model but with several improvements (top, bottom, side ports; correctly treating kinetic energy for outlet and total dissipation for inlet; ports can be above the fluid level).