A Numerical Investigation of Particle and Droplet Impingement for Hypersonic Flow Conditions Includi
Abstract
Predictive modeling capabilities for high-speed flight through the atmosphere are essential for designing advanced flight vehicles.,However, the current state of technology for predictive modeling is limited by uncertainties, high variability, and unpredictability, of weather conditions. Performing accurate, high-fidelity computations and experiments for realistic in-flight conditions with adve,rse weather patterns are extremely difficult due to the complex interactions of several physical phenomena including multi-phase flo,ws and fluid structure-interaction. The proposed research takes on this computational challenge and employs advanced numerical simul,ations to improve our understanding and predictive capabilities of particle and droplet interactions with the flow field around high,- speed vehicles and the fully-coupled material response due to particle/droplet impact. One-of-a-kind fully-coupled, high-speed, mu,lti-phase flow/material response interaction simulations will be performed for geometries and flow conditions relevant to the Navy.,Different types of particles and droplets with various shapes and mechanical properties will be considered, including ice-crystals,,which may experience early breakup when entering and traversing the shock layer in front of the vehicle and/or break up upon impact., Furthermore, the effects of the target material properties on the impingement dynamics as well as the damage caused on the target w,ill be investigated. In addition to impingement of single particles/droplets onto nominally smooth surfaces for different velocities, and impingement angles, alternative scenarios, such as multiple particle/droplet impingement and impingement on pre-damaged surface,s, will be simulated.This research project will employ high-fidelity numerical capabilities previously developed to simulate particu,late impingement as part of an ONR YIP award and will utilize numerical multi-phase and fluid-structure interaction capabilities est,ablished during various other research projects. The University of Maryland research team will closely collaborate with Prof. Guven,, an expert in fracture and failure analysis using peridynamics at Virginia Commonwealth University, to model the material response d,ue to particle and droplet impingement. Additional collaborations with other experimental and computational researchers are planned,to exchange experience and gained knowledge on this research topic as well as obtain data to validate the proposed high-fidelity sim,ulation approach.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 08, 2022
- Source ID
- N000142212443
Entities
People
- Christoph Brehm
Organizations
- Office of Naval Research
- United States Navy
- University of Maryland