Physics-Regularized Heat-Source-Conditioned FNO-LA Surrogate for Coupled Neutronic–Thermal Field Prediction in a Steady-State Single-Rod Benchmark
High-fidelity neutronic–thermal simulations provide detailed field information, but remain expensive for repeated evaluation. This study develops a physics-regularized heat-source-conditioned Fourier neural operator with linear attention (HSC-FNO-LA) for predicting the volumetric heat-source field Q and temperature fie...