2results about How to "Short simulation time" patented technology

This invention discloses an intelligent adaptive dose verification calculation method and system. The intelligent adaptive dose verification calculation method includes: obtaining preliminary dose distribution data for a patient based on a deep learning-based dose prediction model; dynamically assigning variance reduction parameters to particles in a Monte Carlo simulation based on the high and low dose distribution information in the preliminary dose distribution data, wherein the variance reduction parameters include simulation weights, with simulation weights assigned to particles predicted to be in high-dose regions being less than those assigned to particles predicted to be in low-dose regions; and using a Monte Carlo dose calculation engine, simulating the planned beam based on the dynamically assigned variance reduction parameters to obtain high-precision verification dose distribution data. This invention's intelligent adaptive dose verification calculation method ensures the physical authenticity of the final verification dose distribution and the credibility of the "gold standard."

This invention relates to the field of simulation and computation technology, specifically to a simulation analysis method and apparatus for aircraft in-flight water drop based on VOF-DPM. It addresses the problems of actual flight tests being significantly affected by weather, incurring high manpower and material costs, and difficulties in measuring local dynamic physical quantities, as well as the time-consuming nature and scale-effect errors in scaled-down model tests. The method includes setting up a flow field domain, dividing it into an air domain and a water domain; spatially discretizing the flow field domain based on a Cartesian octree grid; effectively capturing the free interface of the gas-liquid two-phase flow using a VOF-DPM combined h-type refined adaptive grid; and progressively refining the local grid of the Cartesian octree grid, with a grid refinement standard of 2 in each direction. x The physical parameters of the flow field are initialized; the position and shape of the phase interface are captured using the VOF method based on grid resolution; and the free-moving droplets are simulated to realize the simulation analysis of airborne water droplets from aircraft.