One of the important parameters in developing dry ice blasting nozzle is the high-speed dry ice pellets. However, many studies focus primarily only on its performance without considering the noise emission that comes from an operating nozzle. In this method, the central composite optimization tool has been used. The two-way mass momentum and energy exchange are successfully modeled using the two-way mass momentum model. As an attempt to theoretically verify the model accuracy, a comparison is conducted on the density, pressure, temperature, as well as Mach number ratios corresponding to various ratios of nozzle area. In return, the smallest value of the convergent angle results in the highest velocity of 516.75 m s⁻¹, as well as the highest level of the acoustic power level of 144.36 dB. Besides, one of the vital influencing factors on the emitted acoustic power level is the turbulence intensity, which can achieve a maximum of 1% intensity for an angle of 20° at the throat section. Besides, the same negative sensitivity of around − 0.99% is provided by the velocity and acoustic power level, which is highly responsive toward the convergent angle variation. Furthermore, the optimum nozzle convergent angle for the minimization of the acoustic power level and maximization of the velocity is 7.03°. The novelty of this research lies in the findings on the effective convergent angle of the dry ice blasting nozzle that accelerates the particle flow and minimizes the noise emission from the operating nozzle.

开发干冰喷射喷嘴的重要参数之一是高速干冰颗粒。但是，许多研究主要只关注其性能，而没有考虑工作喷嘴发出的噪音。在这种方法中，使用了中央复合优化工具。使用双向质量动量模型成功建模了双向质量动量和能量交换。为了从理论上验证模型的准确性，对密度，压力，温度以及对应于各种喷嘴面积比率的马赫数比率进行了比较。作为回报，收敛角的最小值导致最高速度为516.75 m s ^-1以及144.36 dB的最高声功率级。此外，湍流强度是影响发出声功率级的重要因素之一，湍流强度在喉部20°的角度最大可达到1％的强度。此外，速度和声功率级提供了-0.99％左右的负灵敏度，这对会聚角变化非常敏感。此外，用于最小化声功率级和最大速度的最佳喷嘴会聚角为7.03°。这项研究的新颖之处在于对干冰喷射喷嘴的有效会聚角的发现，该加速角可加速颗粒流动并使工作喷嘴发出的噪声最小化。