ANSYS Discovery: Aerodynamic Analysis of NLAW Nose Design CFD Simulation
$1,350.00 $540.00 HPC
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Distinct pressure distributions across nose configurations in ANSYS Discovery CFD analysis
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NLAW blunt nose exhibits largest stagnation zone, optimized for shaped charge performance
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Ogive profiles show focused high-pressure regions with potential drag benefits
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Parametric workflow enables rapid NLAW nose design exploration and comparison
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Description
1. Introduction
The NLAW employs a blunt nose design optimized for shaped charge performance rather than aerodynamic efficiency, raising questions about potential drag reduction through nose shape modification. This project utilizes ANSYS Discovery’s parametric modeling (https://www.mr-cfd.com/shop/spaceclaim-course-session-23-parametric-modeling/) and real-time CFD capabilities to systematically compare blunt, medium ogive, and long ogive nose configurations across varying speeds up to 200 m/s. The analysis reveals pressure distribution trade-offs and stability implications, demonstrating Discovery’s effectiveness for rapid aerodynamic design exploration.
2. Objectives
This study aims to investigate the aerodynamic behavior of different nose configurations on the NLAW missile using ANSYS Discovery’s parametric modeling and real-time CFD analysis. The primary focus is evaluating how shape variations impact pressure distribution and flow characteristics at operational speeds. Additionally, the project demonstrates efficient parametric workflows through History Tracking and automated enclosure sizing to maintain consistent simulation domains across design iterations, providing insights into the aerodynamic trade-offs inherent in the NLAW’s current blunt nose philosophy.
3. Results and Descussion
ANSYS Discovery’s CFD analysis reveals distinct aerodynamic behaviors across NLAW nose configurations. The blunt nose shows largest stagnation pressure at the leading edge, prioritizing shaped charge performance. Ogive profiles exhibit more focused high-pressure regions, suggesting modest drag benefits at subsonic speeds. The parametric workflow with History Tracking and expression-based enclosures proved highly effective for consistent design iteration, validating Discovery’s rapid aerodynamic exploration capabilities.
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