Two-Phase Flow

FLUIDFLOW

Two-Phase Module

Gas-Liquid Flow

Over 1000 companies choose FluidFlow

Engineers globally trust FluidFlow to accurately model their systems and deliver their projects on time and within budget.

Simplified Fluid Flow Modeling

Advanced Phase Tracking & Calculations

FluidFlow automatically tracks fluid phase-state, performs flash and liquid holdup calculations, and generates flow regime maps for each pipe segment. With eight correlation methodologies and a highly accurate marching solution algorithm, it delivers precise, real-world results.

Flexible Two-Phase Flow Analysis

Model fixed or changing vapor quality systems with heat transfer included. Choose from industry-standard two-phase pressure loss correlations like Lockhart-Martinelli, Friedel, Muller Steinhagen Heck, Drift Flux, Beggs Brill, and Chisholm Baroczy—or let FluidFlow select the best correlation for your design.

Features and Advantages

Comprehensive Fluid and Equipment Databases

Includes over 1,200 fluids and 800 equipment components, minimizing manual entry.
Easily add new fluids and components with detailed performance and limit information.
Includes resources for pipe materials, insulation, soil types, and manufacturer details.

Automatic Equipment Sizing Technology

FluidFlow’s powerful technology automatically sizes pipes, pumps, relief devices, and orifice plates to ISO and API standards. It suggests the most economical pipe sizes based on physical properties, equipment, and energy costs. Choose from sizing methods like Economic Velocity, Design Velocity, or Design Pressure Gradient for optimal results.

Heat Transfer Functionality

Enables heat transfer analysis across all modules, including heat exchangers, pipes, and junctions. With options for detailed heat loss/gain calculations, buried pipe calculations, fixed heat transfer rates, and fixed temperature changes, FluidFlow delivers flexibility and precision for accurate thermal modeling.

Dynamic Analysis

Use scripting for time-dependent simulations to analyze pressure changes, control strategies, pump/compressor performance, valve behavior, flare depressurization, and the effects of scale build-up on flow rates.

Applications

Automatically track fluid phase-state across your system.
Perform flash and liquid holdup calculations with flow regime mapping.
Select from multiple pressure loss correlations or let FluidFlow determine the best fit for your conditions.
Ensure accuracy with a marching solution algorithm.

Sample Systems

01 Ensure Regulatory Compliance & Safety with Accurate Relief Valve Sizing

Accurately size safety pressure relief valves to API standards, ensuring your system meets compliance requirements while protecting assets and personnel. In a two-phase propane flow scenario (100 GPM, 60°F, 260 psig), FluidFlow automatically determines the correct valve size—eliminating guesswork and reducing risk.

Sample Systems

02 Optimize System Performance by Predicting Fluid Behavior

Simulate complex fluid mixing scenarios to ensure stable operations. Whether blending air and water or managing phase transitions in heat exchangers, FluidFlow helps engineers visualize how fluids interact, reducing inefficiencies and costly design iterations.

Sample Systems

03 Minimize Operational Risks with Real-Time Flow Regime Mapping

Automatically generate flow pattern maps for every pipe section, allowing you to identify and mitigate potential flow instabilities before they impact operations. With real-time tracking of vapor quality, liquid hold-up, and velocity, engineers can make proactive decisions to maintain optimal performance.