Surface Roughness Effects in Reflection and Emission of Infrared Radiation for Aerospace Materials in Extreme Environments
Abstract
The principal motivation of this proposal is to provide a better understanding of the interaction of infrared radiation with aerospace materials in extreme environments. In this context, the surface roughness of the materials surface has an important impact on the reflection and absorption of incident radiation from material surfaces. Here, we developed a computational model for surface roughness effects to understand the interaction of infrared radiation with rough surfaces of materials, including polar dielectric and refractory metals. A detailed theoretical formulation and a numerical implementation was achieved based on the small perturbation method/small slope approximation (SPM/SSA). The code is capable of various statistical descriptions for rough surfaces, including Gaussian power spectral density. Using the computational code, we investigated the effects of various rough surface parameters, such as correlation length and surface roughness height, on the reflection and absorption spectrum of different materials, including polar dielectric and refractory metals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 2023
- Accession Number
- AD1230997
Entities
People
- Kursat Sendur
Organizations
- Sabancı University