Multiphase flow analysis is an integral part of the design and operation of many systems, especially in the oil and gas industry. Through the observation by ANSYS Fluent CFD, engineers can achieve unprecedented levels of comprehension of such complex systems, paving the way to innovation, maximising efficiency, and driving the industry ahead.

1. Multiphase Flow and Ansys
Fluent CFD Simulation in
Oil & Gas
Multiphase flow is essential in many industrial processes, especially in
the oil and gas industry, which supplies global energy and raw
materials for petrochemicals. Process efficiency and accuracy are
critical for operational and economic benefits.
Simulation, particularly Computational Fluid Dynamics (CFD), is key to
optimizing these processes. CFD enables engineers to analyze complex
fluid flows and improve designs without costly experiments.

2. Simulation: A Cost-Efficient
Path to Process Optimization
Advantages of
Simulation
Numerical simulation offers
insight into system behavior
and tests operating
conditions without
laboratory experiments.
Cost and Time Savings
Simulations are more
affordable and faster than
experimental setups, which
are costly and hard to
replicate.
CFD Training
CFD courses, especially in India, teach engineers how to solve real-
world challenges using simulation tools like ANSYS Fluent.

3. ANSYS Fluent CFD: A Powerful Tool for
Multiphase Flow
Origins of CFD
Developed initially for aerospace, CFD now simulates fluid
flow, heat transfer, and chemical reactions across
industries.
ANSYS Fluent
This software allows detailed simulation of complex
multiphase flow systems, widely used in engineering
today.

4. Advancements in CFD and Multiphase Flow
Modeling
Hardware Progress
Improved computing power has
made CFD accessible and practical
for complex multiphase flows.
Multiphase Flow Definition
Simultaneous flow of gas, liquid,
and solids, common in pipelines,
boilers, and reactors.
Model Variety
ANSYS Fluent offers multiple
models tailored to different flow
regimes and phase interactions.

5. Horizontal Gas-Liquid Flow Regimes in
Pipelines
Stratified & Bubble Flow
• Stratified: phases separated,
liquid at bottom, gas above
• Bubble: gas bubbles in continuous
liquid at high liquid velocity
Wavy & Slug Flow
• Wavy: gas velocity causes waves
at interface
• Slug: alternating slugs of gas and
liquid flow intermittently
Annular & Dispersed Flow
• Annular: liquid coats pipe walls,
gas flows in core at high gas flow
• Dispersed: phases well mixed at
very high velocities

6. Predicting and Controlling
Flow Regimes with ANSYS
Fluent CFD
Flow Regime Maps
ANSYS Fluent provides maps to identify flow patterns based
on velocity and phase properties.
Phase Interaction Models
Models simulate realistic interactions between phases for
accurate predictions.
Pipeline Design
Accurate flow regime prediction is vital for pressure drop,
heat, and mass transfer calculations.

7. The Future of CFD in Oil & Gas Industry
AI and Machine Learning
Integrating AI accelerates
simulation and enhances
predictive capabilities.
1
Digital Twins & Real-Time
Simulation
Enables live monitoring and
optimization of multiphase flow
systems.
2
Automation & Advanced
Solvers
ANSYS Fluent combines automation
to support next-gen engineering
analysis.
3

8. Mastering Multiphase Flow
Simulation with PIGSO
LEARNING
Comprehensive Ansys Fluent CFD Course Online
Hands-on training in multiphase flow simulation and process
modeling using ANSYS Fluent CFD.
Practical Experience
Real-world projects prepare students and professionals for
industrial applications.
Career Advancement
Gain expertise to elevate your engineering career with
structured CFD coaching in India.