This work compares the application of spherical dimples in a modified intake manifold for the diesel engine to a normal intake manifold in terms of turbulent kinetic energy. In this work spherical dimples having an h/d ratio of 0.5 are used. These dimples had been designed by using designing tools in the design modeler module of ANSYS. Same bend angle condition 60° degree from the axis of manifold had been taken for both modified and normal intake system. The main purpose of this work is to observe the variation in turbulent kinetic energy due to the incorporation of spherical dimples in a intake model with a 20 mm diameter, 200mm length and with a bend around 160mm length. In this flow dynamics parameters other than turbulent kinetic energy like velocity and pressure were also observed. All numerical analyses were carried out on the FLUENT module of ANSYS and significant improvements of 25.45% and 35.41% for partial and full dimpled surface were reported in turbulent kinetic energy with respect to normal intake manifold, which were obtained due to modifications in the intake system. This work provides path to develop new techniques for enhancing mixing in the diesel engine.

这项工作将球形凹坑在改进的柴油发动机进气歧管中的应用与在湍流动能方面的普通进气歧管进行了比较。在这项工作中，使用了 h/d 比为 0.5 的球形凹坑。这些凹坑是使用 ANSYS 的设计建模模块中的设计工具设计的。对于改进的和正常的进气系统，都采用了与歧管轴线成 60° 的相同弯曲角度条件。这项工作的主要目的是观察由于在直径为 20 毫米、长度为 200 毫米且弯曲长度约为 160 毫米的进气模型中加入球形凹坑而引起的湍流动能的变化。在这个流动动力学参数中，除了湍流动能，如速度和压力，也被观察到。所有数值分析均在 ANSYS 的 FLUENT 模块上进行，部分和全凹坑表面的湍流动能相对于正常进气歧管有 25.45% 和 35.41% 的显着改善，这是由于进气系统的修改而获得的. 这项工作为开发提高柴油发动机混合的新技术提供了途径。