A simulation calculation method for simulating the surface distribution of hard phase particles based on fluent

Abstract

The present invention is a simulation calculation method based on FLUENT to simulate the distribution of hard phase particle matrix surface, belongs to the field of numerical simulation calculation, and comprises the following steps: S1: establish the geometric model of cold spraying Raoult nozzle, S2: divide the grid and divide the grid Import FLUENT, S3: select the solver and solution method, S4: select the basic equation to be solved, S5: specify the physical properties of the material particles, S6: specify the boundary conditions, S7: initialize the flow field, start iterative solution, S8: gas phase convergence Then add discrete phase particles, S9: insert UDF program into DPM, S10: post-processing of calculation results, S11: repeat the above steps as needed; the present invention adopts discrete phase numerical simulation method, by comparing the change law of cold spray gas phase velocity and particle motion Trajectories, accurately complete the distribution of particles sprayed to the substrate surface, and provide a theoretical basis for solving the distribution uniformity and deposition of cold spray particles on the substrate.

Description

technical field [0001] The invention relates to the technical field of numerical simulation calculation, and relates to a simulation calculation method for simulating the surface distribution of hard phase particle matrix based on FLUENT. Background technique [0002] In recent years, the cold spray manufacturing technology with low temperature, high speed and high deposition efficiency has attracted extensive attention from researchers. The compressed gas is used to drive the accelerated particles, so that the sprayed particles remain solid and collide with the substrate at supersonic speed. The particles are now undergoing severe plastic deformation to form a coating. FLUENT is currently a popular commercial CFD software package in the world, with a market share of 60% in the United States. It can be used in any industry related to fluid, heat transfer and chemical reaction. It has rich physical models, advanced numerical methods and powerful pre- and post-processing fun...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a simulation calculation method for simulating the surface distribution of hard phase particles based on FLUENT. This method finds out the law of hard phase distribution in the numerical simulation of the surface distribution of cold sprayed particles, thereby solving the current difficulty in accurately predicting Difficulties in surface distribution of hard phase particles in cold spraying

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