This link extends GunnsFluidValve with some additional effects that become significant for large cross-section openings, such as a hatch:

• It models fluid molecular diffusion between the connected volumes.
• It models fluid thermal conduction between the connected volumes.

Although this link is called a "hatch", it can be used for any generic flow conductor in which thermal conduction and/or molecular diffusion are desired between the two nodes.

The GunnsFluidHatch can be hooked up to nodes in exactly the same way that regular fluid conductors can.

Port Connection Rules (These are limitations on the port connection to nodes that the link enforces in run-time):

• Ports 0 and 1 cannot connect to the same non-Ground node.

Other Rules (These are extra rules you should always try to follow):

• The nodes on both ports should be capacitive and have volume, unless they are the Ground node.
• Same as GunnsFluidConductor. However, normally this link would be used to connect two nodes that have large volumes, for which molecular diffusion and thermal conduction create significant mass & heat flows. Placing another conductor in series with this breaks these effects between the two nodes. Therefore it is not recommended to place other conductors in series with this link.

Configuration Data Parameters:

• maxConductivity: Same as GunnsFluidConductor.
• expansionScaleFactor: Same as GunnsFluidConductor.
• thermalLength: Same as GunnsFluidValve.
• thermalDiameter: Same as GunnsFluidValve.
• surfaceRoughness: Same as GunnsFluidValve.
• length0 (default = 0.0 (m), length0 + length1 must be > 0): Distance from the hatch (or center of the conductor) to the center of the volume on Port 0.
• length1 (default = 0.0 (m), length0 + length1 must be > 0): Distance from the hatch (or center of the conductor) to the center of the volume on Port 1.

Input Data Parameters:

• malfBlockageFlag: Same as GunnsFluidConductor.
• malfBlockageValue: Same as GunnsFluidConductor.
• position: Same as GunnsFluidValve.
• malfLeakThruFlag: Same as GunnsFluidValve.
• malfLeakThruValue: Same as GunnsFluidValve.
• wallTemperature: Same as GunnsFluidValve.

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