Simulation and Optimization of the Nozzle Section Geometry for a Suspension Abrasive Water Jet

Abstract

In order to improve the life cycle and cutting ability of a suspension abrasive water jet nozzle at the same time, hydrodynamics technology, an enumeration method and multiparameter orthogonal optimization are used to optimize the nozzle section geometry, taking the inlet diameter coefficient of the nozzle, the axial length coefficient of the contraction section and the contraction section curve as optimization variables, and selecting the peak velocity and the unit flow erosion rate as the indicators, it is concluded that the optimal contraction section curve is a Widosinski curve, the optimal inlet diameter coefficient of the nozzle is 0.333 and the optimal axial length coefficient of the contraction section is 2.857. Compared with the commercial product single cone nozzle, the performance of the optimal section nozzle improves by 5.64% and the life cycle increases by 43.2%. On this basis, the effects of operating parameters, including inlet pressure, abrasive particle flow rate and abrasive particle size, are further studied. It is determined that the optimal section nozzle has the best performance under the above operating parameters. It is demonstrated that by optimizing the nozzle section geometry, the cutting capacity and life cycle of the nozzle are improved, the performance of the nozzle can be significantly improved and the optimization of the performance of the nozzle is realized.

Research Progress in Abrasive Water Jet Processing Technology

“…Li et al [ 44 ] used CFD methods to simulate the velocity field of the abrasive water jet and the trajectory of the abrasive particles and analyzed the factors affecting the service life and impact (cutting) capacity of the nozzle to obtain the optimum nozzle inlet diameter coefficient and convergence section length coefficient to provide theoretical reference for nozzle structure optimization. Deng et al [ 45 ] did the same study and obtained the laws of jet exit velocity as influenced by the nozzle convergence angle, the length of the focusing tube, and the effect of abrasive flow rate on the wear condition of the inner wall of the nozzle.…”

Influence of working parameters on the tank washing effect of non-volatile organic compounds for stainless steel lined chemical tanker

“…Panaitescu et al [8] took a study to identify the relevant factors affecting the effect of bulkhead washing and strategies for optimizing operations with a view to achieving effective operations at minimum cost and improving the washing rate of chemicals. Li et al [9] studied the influence of nozzle design on the washing jet and explored washing effect under different nozzle structures to improve chemical washing rate. Emre and Yasli [2] studied the chemical tank washing process and proposed that removing the residue after the unloading of the previous batch of goods as much as possible is the premise to ensure the safe transport of the next batch of chemicals.…”

Effect of initial temperature on cutting speed in liquid nitrogen assisted abrasive suspension jet machining of tungsten steel

“…AIJ has greater pressure and stronger penetration capability. In ASJ, abrasive particles move faster and possess stronger destructive power [10][11][12][13][14][15]. Therefore, ASJ exhibits better cutting performance than AIJ for metal materials and is widely used in metal cutting applications [10,11].…”