Efficient use of fluids in machining processes

This special issue was initiated within the framework of the DFG priority program 2231 FluSimPro – Efficient cooling , lubrication and transportation – coupled mechanical and fluid-dynamical simulation methods for efficient production processes . It features a broad spectrum of research approaches and highlights recent advances in modeling the interaction between cutting fluid, tool, and workpiece in machining operations. Resulting coupled mechanical and fluid dynamic simulations provide the foundation for the design of enhanced cooling lubricant supply systems tailored to specific process requirements, such as heat dissipation in the cutting zone and efficient chip evacuation. In addition to the numerical investigations, dedicated experimental test rigs are presented and discussed. These setups provide detailed insights into cooling lubricant supply, enable the characterization of relevant fluid properties, and support the validation of the developed simulation systems. The reported findings ultimately pave the way for a more efficient and sustainable use of cutting fluids. Alongside contributions from members of the research alliance, this issue also includes selected international papers that provide a broader perspective on current studies and emerging developments in optimized cooling lubricant supply for machining processes.