Effect of Processing Degree and Nozzle Diameter on Multifunction Cavitation

Estimation of Nuclear Fusion Requirements in Bubbles During Ultra-High-Pressure, Ultra-High-Temperature Cavitation Promoted by Magnetic Field

“…Because the prototype small-scale UTPC equipment used a 0.1 mm nozzle, the radius of the water jet cavitation bubbles was smaller than that obtained using a larger 0.8 mm nozzle, which was approximately 100 μm Yoshimura et al (2021b). However, because the UTPC apparatus incorporated a swivel nozzle attached to the water jet nozzle, the bubbles were enlarged compared with those obtained during MFC without a swivel nozzle Yoshimura et al (2021c).…”

“…The pump discharge pressure is an important factor in the production of high-pressure microjets, and a pressure of 35 MPa or higher is required to obtain the high collapse pressure of the microjet. The number of cavitation bubbles depends on the flow rate of the liquid, while the diameter of the liquid jet nozzle affects the size of the cavitation bubbles as well as the flow rate and speed of the liquid jet Yoshimura et al (2021b). The diameter of the nozzle used to perform surface modification in a UTPC system is 0.8 mm.…”

Cavitation Fusion by Energy-Intensive Multifunction Cavitation in a Strong Magnetic Field With Laser Light Excitation

“…The nozzle diameter in this LMEI-MFC fusion apparatus is 0.1 mm, although a large-scale device having a nozzle diameter of 0.8 mm and a flow rate of 7 L/min has also been constructed. High-temperature, highpressure processing using this technique has been shown to impart various characteristics to material surfaces in addition to increased strength , Yoshimura et al (2021c), Yoshimura et al (2021d), Yoshimura et al (2021e), Ijiri et al (2022a), Ijiri et al (2022b), Ijiri et al (2021aIjiri et al ( ), ljiri et al (2021b. A larger WJ nozzle diameter generates a larger cavitation diameter in the water jet, even at a high flow rate.…”