Multi-Phase Flows CFD Analysis
FEA & CFD Based Simulation Design Analysis Virtual prototyping MultiObjective Optimization
Multi-Phases flows involve combinations of solids, liquids and gases which interact. Computational Fluid Dynamics (CFD) is used to accurately predict the simultaneous interaction of more than one combination of phases that can be gases, solids or fluids. Typical applications involve sprays, solid particulate transport, boiling, cavitation, state-changes, free surface flows, dispersed multiphase flows, buoyancy problems and mixed species flows. For example, the risks from flow or process-induced vibration excitation of pipework are widely acknowledged in onshore process plants, offshore topsides and subsea facilities.
Multiphase flow is particularly of concern because forces can vary considerably with flow regimes, and so relatively small changes in the gas to oil ratio can result in significant changes in dynamic force levels. These forces can be relatively broadband in nature and can therefore excite a range of structural modes.
Enteknograte Engineering provides all forms of multi-phase flow analyses ranging from simple particle tracking calculations for industrial applications through to comprehensive design and optimisation of spray equipment and fluid jets. Enteknograte engineering team quickly evaluate alternative product and process designs to increase efficiency, reliability, safety and durability in a competitive, time-critical environment.
We Use CFD tools such as MSC Cradle, Ansys Fluent, Siemens Star-ccm+ and OpenFoam, and FEA Tools such as Abaqus, LS-DYNA and MSC Nastran with combination of very experienced engineers to help our customers in:
Fluid Spray Design and Optimization
CFD Simulation of sand erosion in a pipe carrying a multiphase mixture of oil and gas
Particulate Tracking and Concentration
Improving internal combustion engine emissions and fuel economy performance and with Design and Optimization Reacting Flows and Fuel Injection system
Simulating Mixing Tank, Mixed Species and Bioreactor Performance
Analysis the behavior of moored and/or connected systems, complex offshore, naval and marine structure subject to nonlinear oceanic/sea waves including Free Surface Flows
Simulation of water-landing scenarios Unmanned aerial vehicles (UAVs) with coupled use of CFD and FEA to analysis of probabilistic damage and real world performance prediction
CFD simulation of cavitation and its transient effect on structural integrity and Fatigue life coupled with FE
Multiphase Flows types and application
Our Engineers account the interactions between liquids, solids and gases. Each of these varied multiphase challenges requires a different modeling approach with Euler-Euler such as VOF or Euler-Lagrange method such as using Discrete Element Method to capture immersed particles interaction.
Gas-liquid and liquid-liquid flows
| Engineering challenge: | Dispersed Bubbly Flow | Dispersed Droplet Flow | Mixed or Transitional Flow | Separated Flow |
| Description: | Flow of bubbles in a continuous liquid. | Flow of liquid droplets in a gas or immiscible liquid. | Flows like slug, churnand annular whichinclude bothdispersed and separated elements. | Immiscible fluids separated by a clearly defined interface. |
| Application: | Absorbers, aeration, air lift pumps, cavitation, evaporators, flotation, and scrubbers. | Spays, absorbers, atomizers, combustors, cryogenic pumping, dryers, evaporation, gas cooling, and scrubbers. | Large bubble motion in pipes or tanks, slug catcher. | Sloshing in fuel tanks and offshore separator devices, wave motion simulation, boiling, condensation, container filling, centrifuges. |
Gas-solid flows
| Engineering challenge: | Particle-laden Flow | Pneumatic Transport | Fluidized Bed |
| Description: | Flow of discrete particles in a continuous gas. | Dry bulk materials move through a pipe by air or gas pressure. | Gas rising through a bed of particles forms a fluid-solid mixture that exhibits fluid-like properties. |
| Application: | Cyclone separators, air classifiers, dust collectors, and dust-laden environmental flows. | Transport of cement, grains, and metal powders. | Fluidized bed reactors and circulating fluidized beds used in chemical processes and coal combustion. |
Liquid-solid flows
| Engineering challenge: | Slurry Flows | Sedimentation |
| Description: | Movement of a liquid carrying dispersed solid particles. | Suspended particles settle out from the fluid and come to rest against a barrier. |
| Application: | Slurry transport, hydrotransport and mineral processing. | Mineral and waste processing. |
Particle Flows
| Engineering challenge: | Particle Flows | Three-Phase Flows |
| Description: | Flow of interacting particulates where there is negligible interaction with surrounding gas or liquid. | Gas, liquid and solid in combination of any flow regimes. |
| Application: | Conveyors, hoppers, filling. | Deep well, evaporator, gas-oil-water separator, two-phase fluidized bed with solid catalysts. |
WE WORK WITH YOU
We pride ourselves on empowering each client to overcome the challenges of their most demanding projects.
Enteknograte offers a Virtual Engineering approach with CFD tools such as MSC Cradle, Ansys Fluent, StarCCM+ for flows simulation and FEA based Codes such as MSC Softwrae(Simufact, Digimat, Nastran, Marc, Actran Acoustic solver), ABAQUS, Ansys and LS-Dyna, encompassing the accurate prediction of in-service loads, the performance evaluation, and the integrity assessment including the influence of manufacturing the components.
