Multiscale Hypersonic Boundary Layer Reconstruction via Spectral Binning and Subdomain-wise Conditional Diffusion
Researchers have developed a novel framework using a conditional diffusion model to reconstruct hypersonic boundary layers from limited top-wall observations. This method divides the boundary layer into subdomains, employing a diffusion model trained across multiple Mach numbers to predict flow fields. A specialized spectral loss function is introduced to enhance the fidelity of generated fields, particularly preserving high-wavenumber content. The model demonstrates effectiveness in reconstructing instantaneous structures, spectra, and statistical profiles, while also providing uncertainty estimates. AI
IMPACT This research demonstrates the potential of diffusion models for complex scientific simulations, potentially accelerating discovery in fluid dynamics.