CFD Study of Oscillatory Flow Through 90° Bends in Thermoacoustic Devices

Numerical simulation results investigate oscillatory flow through 90° bends in a thermoacoustic system. The study, authored by Olusegun M. Ilori of the University of Leeds, uses 3D Computational Fluid Dynamics (CFD) with a RANS method and SST k-ω turbulent model. It analyzes the effects of curvature radius on acoustic wave properties and losses, considering two curvature radii and a drive ratio of acoustic excitation up to 0.65%.

Use Cases

• Optimizing bend curvature radius to minimize acoustic losses in thermoacoustic systems based on the described CFD simulation approach.
• Analyzing the relationship between acoustic Dean Number and flow phenomena in oscillatory flows through 90° bends.
• Studying the effects of geometric changes in feedback loops on system performance using the RANS method with SST k-ω turbulent model.

Strengths

• Simulation results are based on a 3D Computational Fluid Dynamics (CFD) approach, providing detailed flow analysis.
• The study investigates two specific curvature radii and a drive ratio of acoustic excitation up to 0.65%, offering comparative data points.
• Analysis is performed with respect to the acoustic Dean Number, a specific dimensionless parameter relevant to the field.

Limitations

• Row count and dataset size are unknown, which may limit suitability assessment for large-scale analysis.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

University of Leeds

Collection Method

3D Computational Fluid Dynamics (CFD) simulation using RANS method with SST k-ω turbulent model.