Package neqsim.process.equipment.lng

package neqsim.process.equipment.lng

LNG cargo ageing and transport simulation package.

Provides a layered, transient model for simulating LNG composition and quality drift during storage and marine transport. Key capabilities include:

• Multi-layer tank model with stratification detection
• Vapor space thermodynamics with EOS-backed phase equilibrium
• Voyage profile coupling (ambient temperature, sea state, weather)
• Rollover risk detection and prevention
• BOG handling network (compressors, reliquefaction, GCU)
• Heel management for cooldown and mixing
• Quality KPI tracking (WI, GCV, MN, density per ISO 6976/6578)

The main entry point is LNGAgeingScenario which orchestrates the time-stepping simulation across all submodels.

Version:

1.0

Author:

NeqSim

Related Packages

Package	Description
neqsim.process.equipment

Class	Description
LNGAgeingResult	Snapshot of LNG ageing KPIs at a single time step.
LNGAgeingScenario	Top-level orchestrator for LNG ageing simulations.
LNGAgeingScenario.OperationalEvent	Represents an operational event during an LNG voyage or storage period.
LNGAgeingScenario.OperationalEvent.EventType	Event type enumeration.
LNGBOGHandlingNetwork	Models the BOG handling network on an LNG carrier or terminal.
LNGBOGHandlingNetwork.BOGDisposition	BOG disposition breakdown across handling modes.
LNGBOGHandlingNetwork.HandlingMode	BOG handling mode.
LNGHeelManager	Manages LNG heel retention, cooldown, and mixing operations.
LNGRolloverDetector	Detects rollover risk in stratified LNG tanks.
LNGRolloverDetector.RolloverAssessment	Result of a rollover assessment.
LNGRolloverDetector.RolloverRiskLevel	Risk level enumeration for rollover assessment.
LNGShipModel	Multi-tank LNG ship model that orchestrates parallel ageing of all cargo tanks.
LNGShipModel.ShipResult	Aggregate ship-level result for a single time step.
LNGSloshingModel	Models sloshing-induced mixing enhancement in LNG cargo tanks.
LNGTankLayer	Represents a single horizontal layer in a stratified LNG tank.
LNGTankLayeredModel	Multi-layer LNG tank model with stratification support.
LNGVaporSpaceModel	Models the vapor space above the LNG liquid in a cargo tank.
LNGVoyageProfile	Defines the environmental and operational profile for an LNG voyage.
LNGVoyageProfile.EnvironmentConditions	Environmental conditions at a specific point in the voyage.
LNGVoyageProfile.Segment	A single segment of the voyage with constant environmental conditions.
MethaneNumberCalculator	Methane Number calculator based on EN 16726 and MWM methods.
MethaneNumberCalculator.Method	Calculation method enumeration.
TankGeometry	Defines the physical geometry of an LNG cargo tank.
TankGeometry.ContainmentType	Tank containment type enumeration.
TankHeatTransferModel	Multi-zone heat transfer model for LNG cargo tanks.
TankHeatTransferModel.HeatTransferZone	A single heat transfer zone with its own U-value, area, and boundary condition.