10.48788/DVUA/A4RRAN Ostroha, Ruslan0000-0003-0045-3416(Sumy State University)Zabitsky, Dmitry(Sumy State University)Bataltsev, Yevhen0000-0003-2035-2014(Sumy State University) DataverseUA 2026 This 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: 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. 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. 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). 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. Ostroha, Ruslan(Sumy State University)