In this study, the atomization of heavy fuel oil (Mazut) and diesel fuel at different pressures is compared experimentally. Also, the effects of temperature on the Mazut fuel atomization are investigated experimentally. Mass flow rate, discharge coefficient, wavelength, liquid film thickness, ligament diameter, spray angle, breakup length, and sature mean diameter are obtained for the Mazut and diesel fuel. Fuels spray images at different pressures and temperatures are recorded using the shadowgraphy method and analyzed by the image processing technique. Error analysis is performed for the experiments, and the percentage of uncertainty for each parameter is reported. The experimental results are compared with the theoretical results. Also, Curves are proposed and plotted to predict changes in the behavior of atomization parameters. Diesel fuel has less viscosity than Mazut fuel. Diesel fuel has shorter breakup length, wavelength, liquid film thickness, and sature mean diameter than Mazut fuel at the same pressure. Diesel fuel has a larger spray angle and a larger discharge coefficient than Mazut fuel at the same pressure. As the pressure and temperature increase, fuel atomization improves. The viscosity of Mazut fuel is decreased by temperature increase. As the fuel injection pressure and temperature increase, breakup length, wavelength, liquid film thickness, and sature mean diameter decrease; also, spray angle increases.

在这项研究中，实验比较了重油（Mazut）和柴油在不同压力下的雾化。此外，还通过实验研究了温度对Mazut燃料雾化的影响。获得了Mazut和柴油燃料的质量流量，排放系数，波长，液膜厚度，韧带直径，喷雾角，破碎长度和平均平均直径。使用阴影照相法记录不同压力和温度下的燃油喷雾图像，并通过图像处理技术进行分析。对实验进行了误差分析，并报告了每个参数的不确定性百分比。将实验结果与理论结果进行比较。此外，提出并绘制曲线以预测雾化参数行为的变化。柴油燃料的粘度低于Mazut燃料。与Mazut燃料在相同压力下相比，柴油燃料的破碎长度，波长，液膜厚度和平均直径短。在相同压力下，柴油燃料比Mazut燃料具有更大的喷射角和更大的排放系数。随着压力和温度的升高，燃料雾化得到改善。马祖特燃料的粘度随温度升高而降低。随着喷油压力和温度的升高，破碎长度，波长，液膜厚度和平均直径减小；同样，喷雾角度也会增加。在相同压力下，柴油燃料比Mazut燃料具有更大的喷射角和更大的排放系数。随着压力和温度的升高，燃料雾化得到改善。马祖特燃料的粘度随温度升高而降低。随着喷油压力和温度的升高，破碎长度，波长，液膜厚度和平均直径减小；同样，喷雾角度也会增加。在相同压力下，柴油燃料比Mazut燃料具有更大的喷射角和更大的排放系数。随着压力和温度的升高，燃料雾化得到改善。马祖特燃料的粘度随温度升高而降低。随着喷油压力和温度的升高，破碎长度，波长，液膜厚度和平均直径减小；同样，喷雾角度也会增加。