NFX CFD
Overview
This video demonstrates the Sliding Mesh method for analyzing transient flow behavior inside a pump as the impeller rotates. The fluid domain is divided into rotating and stationary regions to capture changes in the flow field over time.
Sliding Mesh Analysis Workflow :
• Rotating & Stationary Region Setup
The fluid domain is divided into a rotating region around the impeller and a stationary region inside the pump casing. Each region is meshed separately, and Fluid–Fluid Contact is defined at the interface to exchange flow information between the two regions.
• Transient Simulation Setup & Monitoring
The mesh around the impeller moves according to the specified rotational axis and speed. During the transient simulation, residual histories are reviewed and key flow variables are monitored over time.
• Time-Dependent Flow Analysis
Velocity contours and vectors are compared at different time steps to examine how flow moves from the impeller through the casing and how the flow pattern changes with the impeller position.
The video demonstrates how the Sliding Mesh method captures time-dependent flow behavior in rotating machinery through mesh motion and flow interaction between rotating and stationary regions.
Download Example Files
Sliding Mesh Analysis Workflow :
• Rotating & Stationary Region Setup
The fluid domain is divided into a rotating region around the impeller and a stationary region inside the pump casing. Each region is meshed separately, and Fluid–Fluid Contact is defined at the interface to exchange flow information between the two regions.
• Transient Simulation Setup & Monitoring
The mesh around the impeller moves according to the specified rotational axis and speed. During the transient simulation, residual histories are reviewed and key flow variables are monitored over time.
• Time-Dependent Flow Analysis
Velocity contours and vectors are compared at different time steps to examine how flow moves from the impeller through the casing and how the flow pattern changes with the impeller position.
The video demonstrates how the Sliding Mesh method captures time-dependent flow behavior in rotating machinery through mesh motion and flow interaction between rotating and stationary regions.