Based on the Monte Carlo homogenization theory and the finite volume method. a three-dimensional diffusion spatiotemporal dynamics model suitable for the analysis of instantaneous critical accidents was established. The three-dimensional diffusion spatiotemporal dynamics model was coupled with the unsteady state heat transfer model and the radiation cracking bubble model. and the calc... https://missouriquiltcoes.shop/product-category/quilt-as-you-go-technique/