Data Documentation for the Original Research Paper (ORP) entitled: "Analytical free streamline solutions for geometrical cavitation inside sharp-edged and profiled nozzles".


General Information
This dataset contains MATLAB codes used to obtain the results presented in the ORP authored by Álvaro Pardo Vigil, José González Pérez and Adrián Pandal Blanco, all members of the FERES Research Group in the University of Oviedo. These datasets are protected under Creative Commons License: CC BY-NC-SA.

Name of data set
"Raw Data of Analytical free streamline solutions for geometrical cavitation inside sharp-edged and profiled nozzles"

Name of data files in data set
Each of the files is named according to its function, as specified in the "File Overview" section.

Dataset language
English (although some sentences in Spanish may appear)

Date the data set was last modified
14/06/2025

Funder
Álvaro Pardo Vigil is supported by the Spanish Ministry of Science, Innovation and Universities within the “FPU” Program (grant reference FPU23/03450).This work was partially funded by Universidad de Oviedo and LINTER TECHNICAL CENTER, S.L., under the project “FUO-25-024: Modelo numérico 3D de la atomización de fluidos viscosos para la aplicación de tratamientos superficiales". Additional funding is provided by Subvenciones a Grupos de Investigación de Organismos Públicos de I+D+I del Principado de Asturias, Convocatoria 2024 IDE/2024/000724, ref.: SEK-25-GRU-GIC-24-045.


Methodology for data collection
The data set is composed by numerical data generated from the solution of the developed analytical method, the MATLAB functions that were used to generate them being also provided.

Data collector
Álvaro Pardo Vigil

Date of data collection
12/06/2025

Person to contact with questions
Álvaro Pardo Vigil (pardoalvaro@uniovi.es)

Data entry
12/06/2025

Software used to prepare data set
MATLAB

Data processing that was performed
No data processing has been performed, as the data already come from the solution of an analytical model.

Variables
. mu: Total contraction ratio after cavity [-]
. cavlength/l: Non-dimensional cavity length [-]
. cavvol: Non-dimensional cavity volume [-]
. sigma: Nozzle contraction ratio [-]
. k: Cavitation coefficient, k = (1+cavitation number)^(1/2) [-]
. n: Factor of nozzle angle, such that the tilt angle is equal to pi/n [-]

File Overview
Inside the main folder "Raw Data", four folders are available to separate the different contents of the dataset.

	- In the folder "1_Functions", the MATLAB functions used to extract the cavity length, width and volumen for a given cavitation number and contraction ratio are provided. The "cavprofilednozzle.m" function solves the profiled nozzle case, while the "cavsharpnozzle.m" function solves the sharp nozzle scenario. The inputs of these functions are the nozzle contraction ratio, tilt angle and the cavitation number.

	- In the folder "2_Comparison", the cavity length and width for a nozzle contraction ratio of 0.25 are compared in the profiled and sharp nozzles, using data previously extracted from the application of the functions in Folder 1.

	- In the folder "3_Mass flow choking", the results obtained for a nozzle contraction ratio of 0.05 are interpolated and then applied to the calculation of the 	pressure drop and mass flow characteristics of the Winklhofer et al. injector. Validation of the proposed model is then carried out based on the experimental and numerical data by Winklhofer et al. and Payri et al.

	- In the folder "4_Contours", the cavity morphology predicted by the proposed model is found for a pressure jump Ap = 7 Mpa, using both the function "cavsharpnozzle.m" and a two-dimensional coupling with a HRM model.