Two-phase Flow Simulation

Model complex system networks with fluid phase changes

The LMS Imagine.Lab Two-phase Flow simulation solution enables you to model complex system networks where the fluid undergoes phase changes such as air-conditioning systems, heat pumps or Rankine cycle. This flow simulation solution is based on a lumped transient heat transfer approach to compute:

  • Energy transport through the system
  • Internal flow convective heat exchanges in single or two-phase conditions
  • Pressure losses, temperature levels, mass flow rate and enthalpy flow rate distribution
  • Gas mass fraction evolutions in the system
  • Mass transfer between the vapor and liquid phase
  • External flow convective heat exchanges (such as wall/moist air) including the influence of water vapor condensation

The two-phase flow simulation solution is based on a basic element approach so you can model a maximum of two-phase flow network configurations from a minimum set of components. The two-phase flow simulation solution allows you to model real transient behavior with compressor stopped conditions and realistic thermodynamic behavior. A complete modeling methodology helps you build and adapt for stop and start applications.

Two-phase Flow Capabilities

Two-phase Flow Systems-Capabilities

Two-phase Flow provides you with these features:

  • Transient and steady-state system simulation based on the physics of two-phase flows
  • Description of the refrigerant thermodynamic properties from modified Benedict-Webb-Rubin (mBWR), ECS or Helmoltz equations of state including a refrigerant fluids database
  • State-of-the-art theory for the calculation of single phase and two-phase pressure
  • Internal convective heat transfer modeling and external flow convective heat transfer with moist air (such as evolution of the air humidity, influence of water vapor condensation on the heat transfer and calculation of condensed water vapor mass flow rate)
  • Integrated thermodynamic plot to visualize and animate pressure volume (P-V), temperature entropy (T-s), pressure temperature (P-T) and pressure enthalpy (P-H) diagrams.

Two-phase Flow Benefits

Two-phase Flow Systems-Benefits

Two-phase Flow helps you:

  • Use an efficient and low-cost alternative to prototyping or test rigging
  • Optimize mass of refrigerant in the loop
  • Anticipate architecture changes on potential efficiency gains
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