Vibration-Assisted Capillary Jet Breakup in Melt Granulation: Factorial Experiment, Linear Stability Analysis and CFD Simulation Datahttps://doi.org/10.48788/DVUA/A4RRANOstroha, RuslanZabitsky, DmitryBataltsev, YevhenDataverseUA2026-09-222026-09-22T12:15:37ZThis dataset contains experimental, calculated and numerical (CFD) data on capillary jet breakup in a vibration granulator (prilling), supporting the optimization of melt granulation processes. The dataset includes: <ul> <li>Factorial design: 22 full factorial experiment on the influence of actuator plate position (5–30 mm) and liquid column height (120–450 mm) on the actuator operating frequency.</li> <li>Mathematical model (Maple): input parameters, dimensionless numbers (Oh, We, Re, Ca), linear stability results and droplet diameters by five theoretical approaches for a urea melt jet (Dj = 1.2 mm, u = 4.35 m/s, T ≈ 133 °C), with sensitivity analysis.</li> <li>Experiment and CFD (water): high-speed images and CFD results for single-point and combined (dual-frequency, f2/f1 = 2.05) vibration excitation, including Sauter mean diameter (SMD) and coefficient of variation (COV).</li> </ul> Combined vibration excitation reduced the COV of droplet diameter from 18.6–20.6% to 6.3–8.4%, approaching monodisperse droplet formation. Setup: vibration granulator with a disc actuator (diameter 100 mm, thickness 1 mm), vibration amplitude 100 µm, excitation frequencies 220–780 Hz.EngineeringPrillingFluid thread breakupUreaGranulationPlateau-Rayleigh instabilityComputational fluid dynamicsFactorial experimentVibration excitationMonodisperse dropletsSklabinskyi, V., Liaposhchenko, O., Ostroha, R., Zabitsky, D., Myshchenko, D., Kozii, I., & Bocko, J. (2026). Theoretical Analysis of Molten Jet Breakup in a Rotating Granulation System Under Unforced Conditions. Processes, 14(7), 1077., doi, 10.3390/pr14071077, https://doi.org/10.3390/pr140710772026-09-22Bataltsev, Yevhen2026-09-22Experimental dataNumerical simulation dataCalculated dataCC BY 4.0