Abstract: Disclosed are a method for diagnosing a vascular disease and an apparatus therefor. A vascular disease diagnosing method according to an exemplary embodiment of the present disclosure includes: an information acquiring step of acquiring patient information for a diagnosis subject; an FFR processing step of applying a geometric feature parameter information generated based on the patient information to a first learning model to calculate fractional flow reserve (FFR) information; a CFD processing step of applying the geometric feature parameter information to computational fluid dynamics (CFD) to calculate flow feature information; and a diagnosing step of determining a vascular disease based on the fractional flow reserve information and the flow feature information and determine whether to perform a surgery on the vascular disease.

Abstract: A Lattice Boltzmann method (LBM)-based fluid analysis simulation device comprises: an input unit for receiving data on an analysis object in order to perform a fluid analysis simulation; a grid generation unit for generating a calculation grid system and an output grid system on the basis of the received data, wherein the calculation grid system is for calculating flow data, and the output grid system is for outputting an analysis result; a flow data calculation unit for calculating flow data on a plurality of particles on the basis of the calculation grid system; and a simulation execution unit for executing the fluid analysis simulation on the basis of the output grid system.

Abstract: A smoothed-particle hydrodynamics (SPH)-based fluid analysis simulation apparatus comprises: an input unit for receiving, as an input, data about a plurality of particles, for a fluid analysis simulation; a space formation unit that divides, into a plurality of cells, the space in which the plurality of particles are present, and generates cell indexes on the basis of the locations of the cells in the space where the plurality of particles are present; a particle search unit for searching for at least one neighboring particle that neighbors a target particle, on the basis of particle reference information about the plurality of particles and cell reference information about the plurality of cells; and a flow data calculation unit that calculates flow data between the target particle and the at least one neighboring particle, and performs a fluid simulation on the basis of the flow data for the plurality of particles.

Abstract: A particle-based fluid analysis simulation method, which uses dummy particles and is performed in a fluid analysis simulation device, comprises the steps of: modeling a simulation area, including a plurality of particles, for a fluid; generating at least one dummy particle required for fluid analysis simulation of the simulation area, and arranging the at least one dummy particle outside the simulation area; calculating flow data of the plurality of particles by using the at least one dummy particle arranged on the outside; and performing the fluid analysis simulation of the simulation area on the basis of the calculation result, wherein the number of the at least one dummy particle is varied while the fluid analysis simulation is being performed.

Abstract: A smoothed-particle hydrodynamics (SPH)-based fluid analysis simulation apparatus comprises: an input unit for receiving, as an input, data about a plurality of particles, for a fluid analysis simulation; a space formation unit that divides, into a plurality of cells, the space in which the plurality of particles are present, and generates cell indexes on the basis of the locations of the cells in the space where the plurality of particles are present; a particle search unit for searching for at least one neighboring particle that neighbors a target particle, on the basis of particle reference information about the plurality of particles and cell reference information about the plurality of cells; and a flow data calculation unit that calculates flow data between the target particle and the at least one neighboring particle, and performs a fluid simulation on the basis of the flow data for the plurality of particles.

Abstract: The present disclosure provides a particle-based fluid simulation method using multiple processors which is performed in a fluid simulation apparatus, including modeling a simulation region including multiple particles for a fluid, dividing the simulation region into multiple sub-regions, allocating each of the multiple processors to each of the multiple sub-regions, calculating, by each of the multiple processors, flow data of multiple particles for a sub-region corresponding to each of the multiple processors, and performing a fluid simulation based on the result of the calculation. The calculating, by each of the multiple processors, flow data of multiple particles for a sub-region corresponding to each of the multiple processors includes exchanging, by each of the multiple processors, the flow data of the multiple particles with at least one adjacent processor.