The Pipe Flow Module Interfaces
The module includes the following physics interfaces. See also the graphical view from the Model Wizard, shown in
Figure 8
.
Pipe Flow
The Pipe Flow interface (
) computes the pressure and velocity field in isothermal pipe systems.
Heat Transfer in Pipes
The Heat Transfer in Pipes interface (
) computes the energy balance in pipe systems but receives the flow field as a value or as a known solved field. Wall heat transfer to the surroundings is included.
Transport of Diluted Species in Pipes
The Transport of Diluted Species in Pipes interface (
) solves a mass balance equation for pipes in order to compute the concentration distribution of a solute in a dilute solution, considering diffusion, dispersion, convection, and chemical reactions.
Nonisothermal Pipe Flow
The Nonisothermal Pipe Flow interface (
) solves the flow, pressure, and temperature simultaneously and fully coupled.
Reacting Pipe Flow
The Reacting Pipe Flow interface (
) solves the velocity fields, pressure, temperature, and reacting species transport simultaneously and fully coupled.
Water Hammer
The Water Hammer interface (
) solves rapid hydraulic transients in pipe systems, taking the elastic properties of both the fluid and pipe wall into account.
Pipe Acoustics, Frequency Domain
The Pipe Acoustics, Frequency Domain interface (
) models sound waves in flexible pipe systems, with the assumption of harmonic vibrations.
Pipe Acoustics, Transient
The Pipe Acoustics, Transient interface (
) models sound waves in flexible pipe systems, for arbitrary transient variations in pressure.
Pipe Mechanics
The Pipe Mechanics interface (
) is used for analysis of stresses and deformation in pipes.
The Fluid-Pipe Interaction, Fixed Geometry Interface
The Fluid-Pipe Interaction, Fixed Geometry interface (
) can be used to model problems where the forces from the fluid in a piping system act as structural loads. The structural deformations do not affect the flow.
Figure 8:
The physics interfaces for the Pipe Flow Module as shown in the Model Wizard. The interfaces are located in different groups.
Physics Interface Guide by Space Dimension and Study Type
The table lists the physics interfaces available with this module in addition to those included with the COMSOL Multiphysics basic license.
Physics interface
Icon
Tag
Space Dimension
Available Study Type
Acoustics
Pipe Acoustics
Pipe Acoustics, Frequency Domain
pafd
3D, 2D
eigenfrequency; frequency domain
Pipe Acoustics, Transient
patd
3D, 2D
time dependent
Chemical Species Transport
Transport of Diluted Species in Pipes
dsp
3D, 2D
stationary; time dependent
Reacting Pipe Flow
rpfl
3D, 2D
stationary; time dependent
Fluid Flow
Single-Phase Flow
Pipe Flow
pfl
3D, 2D
stationary; time dependent
Water Hammer
whtd
3D, 2D
time dependent
Nonisothermal Flow
Nonisothermal Pipe Flow
nipfl
3D, 2D
stationary; time dependent
Fluid–Pipe Interaction, Fixed Geometry
2
—
3D, 2D
stationary; time dependent
Heat Transfer
Heat Transfer in Pipes
htp
3D, 2D
stationary; time dependent
Structural Mechanics
Pipe Mechanics
pipem
3D, 2D
stationary; eigenfrequency; time dependent, modal; time dependent, modal reduced-order model; frequency domain; frequency domain, modal; frequency domain, modal reduced-order model; time dependent; response spectrum; random vibration (PSD)