Computational Fluid Dynamics 
Computational Fluid Dynamic (CFD) is a sophisticated computational-based analysis technology that has the ability to predict the fluid flow behavior and study the dynamics of the flow.

To account for the true nature of the flow, therefore, Computational Fluid Dynamics (CFD) is used to simulate the flow conditions in the vessel, thereby providing greater detail and accuracy. These CFD predictions can be evaluated against the spreadsheet calculations to ensure the validity of the process design methods. Coupling the CFD solutions with Finite Element Analysis (FEA) of the mechanical design features of the separation internals enables the integrity of the systems to be guaranteed.

CFD provides the power to simulate: 
·Flow of gases and liquids
·Multiphase physics
·Fluid-structure interaction 

Modelling the complex three-dimensional flow interactions with the vessel internals can provide a visual indication of the weaknesses in the process design. This greatly simplifies the trouble-shooting process.

APGP uses leading edge CFD software for:  
·Trouble-shooting 
·Design optimisation – reducing size and weight of separation equipment 
·Process optimisation – increasing capacity of separation equipment 
·Process optimisation – increasing efficiency of separation equipment 
·Evaluation of revamps - before and after studies 
·Anti-sloshing arrangements for Floating Production Units (FPUs) 
·Operating Flexibility analyses 
·Feed studies.

Motion Studies and Separator Designs

The use of floating oil production systems (FPSOs) is increasing relative to fixed platforms because of: 
·Lower capital cost 
·Suitable at any water depth 
·Potential of re-use 
·Hydrocarbon deposits discovered in progressively deeper water

However, some of the processing equipment on floating systems, particularly large primary gravity separators, can be adversely affected by floater motions that are caused by waves, wind and currents.

Installation of porous or perforated baffles in the vessels can effectively suppress the gross liquid movement caused by the vessel motion also known as sloshing.

By using the multiphase solver in CFD, the fluid behavior in the vessel can be predicted.