RANDOM PARTICLE GENERATION METHOD BASED ON PARTICLE SIZE DISTRIBUTION

    公开(公告)号:US20230251178A1

    公开(公告)日:2023-08-10

    申请号:US17960016

    申请日:2022-10-04

    IPC分类号: G01N15/02 G16C20/40

    摘要: The present disclosure provides a random particle generation method based on particle size distribution, which can accord with the particle size distribution characteristics of a geological structure. According to this method, random particle generation is adopted, so that a common spherical structure is avoided, and a generated particle structure is very similar to a real soil structure. Based on actual particle size distribution, particles with different particle sizes are generated by batch generation, particle seeds are generated at random pore locations, and particles are generated based on the seeds. By providing a random particle generation method based on particle size distribution, a soil structure in a form of porous media can be restored by means of simulation, which thus provides a porous medium model for the research of groundwater infiltration and fossil energy exploitation.

    APPARATUS FOR ANALYSING THE PARTICULATE MATTER CONTENT OF AN AEROSOL

    公开(公告)号:US20180156706A1

    公开(公告)日:2018-06-07

    申请号:US15830036

    申请日:2017-12-04

    IPC分类号: G01N15/06

    摘要: An apparatus for analysing the particulate matter content of an aerosol includes an aerosol chamber configured to receive an aerosol, the particulate matter content of which should be analysed, at least one ultrasonic generator configured to produce ultrasonic waves in the aerosol received in the aerosol chamber, an ultrasonic detector configured to detect ultrasonic waves produced by the at least one ultrasonic generator in the aerosol, and an evaluator having a data exchange communication link with the ultrasonic detector and configured to ascertain the matter content on the basis of signals output by the ultrasonic detector. The ultrasonic generator and the ultrasonic detector are positioned relative to one another such that a path length to be traversed by ultrasonic waves between the ultrasonic generator and the ultrasonic detector is less than 1 cm.