PSI - Issue 72

Emre Kara et al. / Procedia Structural Integrity 72 (2025) 85–90

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b) The Execution Phase (Figure 4):  The pressing of the oil (a) from the syringe into the oil line, followed by the release of a few drops.  The power supply (b) is then activated, allowing the cable to warm up.  The ESC fan is switched on only after the smoke (c) has dissipated.

Fig. 4. The execution phase of the experimental setup with the inclusion of (a) the oil, (b) the power supply, (c) the wire and the first smoke.

c) The Post Experiment Phase: 

It begins with the disconnection of all power connections.  Once the wire has cooled, it is replaced.  Finally, the oil spilled on the body is cleaned.

3. Visualization Results Step-by-step close-ups of the droplet delivery mechanism are given in Figure 5. Through the step-by-step illustration of the drop mechanism, it is easy to observe the flow behavior of the droplet. Initially, a droplet forms (Fig. 5a), growing larger as more oil accumulates until it detaches from the surface and slides along the wire (Fig. 5b). This moistens the wire for the first time, followed by smaller droplets (Fig. 5c and Fig. 5d) after the large one, all contributing to an oily wire surface. The droplets that do not adhere to the surface of the wire flow out and discharge through the hole on the lower Coanda surface.

Fig. 5. Step-by-step close-ups of the droplet delivery mechanism: (a) First droplet formation, (b) gliding oil on the wire, (c) gliding droplets on the wire and (d) sparse droplet formations on the wire.