Overview

Actran SNGR is a finite element-based acoustic solver designed to predict noise generated by turbulent flows using steady Computational Fluid Dynamics (CFD) solutions. By extracting aerodynamic noise sources from steady-state flow simulations conducted with various CFD codes—such as Fluent™, Star-CD™, StarCCM+™, Powerflow™, SC/Tetra™, or OpenFOAM™—Actran SNGR synthesizes these sources and integrates them into acoustic computations for propagation analysis. This approach enables faster assessments of flow-induced noise compared to traditional aero-acoustic methods, making it particularly advantageous for design optimization processes where comparing relative noise levels between different designs is essential.

Features and Capabilities

• Hybrid Aero-Acoustic Approach: Combines steady Reynolds-Averaged Navier-Stokes (RANS) CFD results with acoustic radiation analysis to efficiently predict noise from turbulent flows.
• CFD Integration: Interfaces directly with leading CFD codes using native file formats or through Ensight™ Gold format, facilitating seamless data transfer.
• Aero-Acoustic Source Synthesis: Utilizes Lighthill's analogy to generate aero-acoustic noise sources from steady RANS CFD results, enabling accurate noise prediction.
• Conservative Source Mapping: Employs conservative integration techniques to map noise sources from CFD meshes to acoustic meshes, ensuring precise data representation.
• High-Performance Solvers: Features direct and iterative solvers optimized for reduced computational times, enhancing analysis efficiency.
• Parallel Processing: Supports parallel processing capabilities to handle large-scale simulations effectively, improving computational performance.
• Actran VI Integration: Fully integrated into the Actran VI environment, providing a user-friendly interface for streamlined workflow management.
• Compatibility with Actran Modules: Can be combined with Actran VibroAcoustics to address complex aero-vibro-acoustic challenges, offering a comprehensive solution for noise analysis.
• Versatile Application Range: Applicable to various scenarios, including HVAC modules, side mirror noise, airframe noise (e.g., landing gear, trailing edge), and air distribution systems, demonstrating its adaptability across different industries.
• Platform Availability: Available on multiple platforms, including Windows, Linux, and most Unix systems, ensuring accessibility for diverse user environments.
• Efficient Noise Prediction: Enables faster noise prediction compared to traditional methods, making it particularly useful for optimization loops where relative noise levels between different designs are evaluated.