Three-dimensional modeling of the gas field distribution of high pressure gas jets used in laser fusion cutting was discussed. A mathematical model for calculating field distribution, locating the position of normal shock, and comparing the dynamic characteristics of the gas jet coming from subsonic and supersonic nozzles under different inlet stagnation pressures was presented. The simulated results were compared with the shadowgraphs of the actual gas jet. The theoretical results were found to be in good agreement with the experimental techniques. The gas jet from supersonic nozzle featured uniform distribution, maximum even momentum thrust and a parallel jet boundary under designed working pressures.
- Gas flow field
- Laser fusion cutting
- Three-dimensional modeling
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Biomedical Engineering