LedaFlow modeling

LedaFlow models from steady-state to Q3D

The LedaFlow^® software is made up of four different mathematical models. The steady-state point model, transient 1D model , Profile model and the Q3D (quasi-3D). LedaFlow 1D consists of the point model and the 1D transient model. LedaFlow 1D v1.0 is available now. We are in the process of validating the Q3D model which will be release once we complete that process.

Improved understanding through greater definition
Greater definition brings LedaFlow closer to the actual physics. LedaFlow was the first to model all three momentum equations, is the only simulator to conserve mass against nine fields (three phases in one continuous and two dispersed fields) and the only simulator to model separately the temperatures within each of the bulk phases.

Non-equilibrium PVT - Phase change rate determined by diffusivity
The non-equilibrium modeling concept inherent in all LedaFlow modules is superior to existing models assuming equilibrium or near-equilibrium flow. This is crucial for simulation of fluid flow in wells (including intelligent wells), well start-up and well stability issues, as well as design of interconnecting piping in LNG plants.

9 field approach - Detailed modeling of water and oil dispersions and gas bubbles in liquid phase.
 

Greater definition through the 9 field approach

 
LedaFlow includes:

• 9 mass equations
• 3 momentum equations – leading to improved calculation of the oil-water momentum exchange and resulting slip
• 3 energy equations – leading to more accurate temperature and heat loss predictions

LedaFlow simulates transient phenomena occurring in typical operations:

• normal flow
• low flow
• start-up
• shut-down
• ramp-up/ turndown
• depressurization
• line packing
• dead-oil circulation
• pigging