The DF_DBM^TM is a User Defined Function (UDF) for Fluent. This code brings the capabilities of Dynaflow's bubble tracking and dynamics analysis code, DF_Multi_SAP^© in to the flexibility and user friendliness of Fluent.

What does the DF_DBM^TM do?

• DF_DBM^TM enables Fluent users to include the presence of bubble nuclei or purposely injected bubbles in their flow modeling.
• DF_DBM^TM follows individual bubbles and computes their dynamics.
• DF_DBM^TM works within Fluent similar to Fluent's discrete phase model (DPM) particle tracking.

Why do I need it?

• Practically all liquids contain microscopic bubble nuclei.
• At low pressures or high velocities these can affect the flow significantly.
• Bubble dynamics is important for flows with large pressure gradients.
• The presence of these bubble nuclei is accounted for with this UDF.
• Bubble behavior and acoustic noise are modeled.
• It is the tool for studies on cavitation inception, bubble nuclei effects, noise from the bubbles, propulsion modification, etc.
• Industry and Navy applications: flows in pipes, jets, pumps, propellers, ships, ocean, etc.

DF_DBM^TM, Version 1.0

• Bubble dynamics (incompressible & compressible)
• Bubble tracking (that works with several DPM options)
• Works with 2D & 3D, steady and unsteady
• Post-processing using the Fluent GUI
• Compatible with Fluent 6.2 and later
• Platform: Windows XP (Please check with DYNAFLOW for other platforms.)

Applications:

• Propellers, impellers, water jets
• Cavitation inception
• Ship wake noise signature
• Bubble-flow interaction
• Suitable for bubble dynamics, cavitation, noise studies

Reference:

• See Write-up in Fluent News