Particle Tracking Velocimetry in high-speed analysis of coolant flow to validate a numerical model concerning discontinuous drilling of the nickel-base alloy Inconel 718

Wolf, Tobias; Fast, Michael; Biermann, Dirk; Turek, Stefan

doi:10.1016/j.procir.2023.06.099

Cited by 1 publication

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated velocities are compared with the corresponding experimental setup using the Particle Tracking Velocimetry (PTV). The results that can be seen in [5] show good agreement of the simulation to the experiments. Next the heating during the 'Contact' configuration is simulated with algorithm 3 using a fictional heat source at the cutting edge, where the tool geometry intersects the workpiece geometry, and an initial calculated velocity field.…”

Section: Simulation Model For 'No Contact' and 'Contact' Configurationsupporting

confidence: 70%

Mathematical Modeling of Coolant Flow in Discontinuous Drilling Processes with Temperature Coupling

Fast

Mierka

Turek

et al. 2023

Proc Appl Math and Mech

Self Cite

View full text Add to dashboard Cite

Nickel-based alloys, like Inconel 718, are widely used in industrial applications due to their high-temperature strength and high toughness. However, machining such alloys is a challenging task because of high thermal loads at the cutting edge and thus extensive tool wear is expected. Consequently, the development of new process strategies is needed. We will consider the discontinuous drilling process with coolant. The main idea is to interrupt the drilling process in order to let the coolant to flow around the cutting edge and to reduce thermal loads. Since measurements inside the borehole are (nearly) impossible, simulations are a key tool to analyze and understand the proposed process.In this paper, a 3D fluid flow simulation model with Q2P1 Finite Elements in combination with the Fictitious Boundary Method is presented to simulate the coolant flow around the drill inside the borehole. The underlying equations are transformed into a rotational frame of reference overcoming the challenges of mesh design for high rotational domains inside the fluid domain. Special treatment of Coriolis forces is developed, that modifies the 'Pressure Poisson' Problem in the projection step improving the solver for high angular velocities. To further take high velocities into account, a two-scale artificial diffusion technique is introduced to stabilize the simulation. Finally, Q1 Finite Elements are used to simulate the heating and cooling processes in both the tool and the coolant during the complete discontinuous drilling process. The simulation is split into a 'contact' and a 'no contact' phase and a coupling strategy between these phases is developed. FBM is utilized to switch between the two configurations, thus only one unified grid for both configurations is needed. The results are used to gain insight into the discontinuous drilling process and to optimize the process design.

show abstract

Section: Simulation Model For 'No Contact' and 'Contact' Configurationsupporting

confidence: 70%

Mathematical Modeling of Coolant Flow in Discontinuous Drilling Processes with Temperature Coupling

Fast

Mierka

Turek

et al. 2023

Proc Appl Math and Mech

Self Cite

View full text Add to dashboard Cite

show abstract

Particle Tracking Velocimetry in high-speed analysis of coolant flow to validate a numerical model concerning discontinuous drilling of the nickel-base alloy Inconel 718

Cited by 1 publication

References 11 publications

Mathematical Modeling of Coolant Flow in Discontinuous Drilling Processes with Temperature Coupling

Mathematical Modeling of Coolant Flow in Discontinuous Drilling Processes with Temperature Coupling

Contact Info

Product

Resources

About