Numerical Study of the Impinging Jets Formed by an Injector with Different Nozzle Diameters - Open Research Data - Bridge of Knowledge

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Numerical Study of the Impinging Jets Formed by an Injector with Different Nozzle Diameters

Description

The data set contains the simulation files related to the research paper “Numerical Study of the Impinging Jets Formed by an Injector with Different Nozzle Diameters”, https://doi.org/10.4271/2022-01-1080.

The aim of the numerical analysis was to investigate the effect of the nozzle diameter on the formation of liquid structures by the impingement of two round jets. Two different versions of the two-hole injection head were considered, a combination of two 0.7-mm and two 0.85-mm nozzles. The constant injection pressure of 0.4 MPa resulted in relatively high Reynolds numbers of water jets before the collisions (approximately 17 100 – 21 000). A change in the nozzle diameter increased both Reynolds number and water mass flow rate. The results indicated that an increase in either the Reynolds number or the mass flow rate favours the formation of impact waves in the liquid sheets and their disintegration. However, the effect of the increased mass flow rate was predominant under the considered conditions.

The simulation was performed in AVL FIRE™ software using Large Eddy Simulation and Volume of Fluid methods. The data set consists of four AVL FIRE™ Workflow Manager projects: 

  • LES simulation of the 0.7-mm nozzles (“Case1_D070”)
  • LES simulation of the 0.85-mm nozzles (“Case2_D085”)
  • LES simulation of the 0.85-mm nozzles with jet’s Reynolds number matched to 0.7-mm case by the reduction of the exit velocity (“Case3_D085_matchedReynoldsNumber”)
  • One-phase RANS simulations, which were performed to evaluate the injection velocity of 0.7-mm and 0.85-mm set-ups at 0.4-MPa injection pressure (“Case_RANS_velocity_evaluation”)

Each of the abovementioned folders contains the GUI project files named “*.fpr” and the required “Mesh” and “Calculation” folders. Folders “Calculations” already contain the results of simulations. In order to display the results using AVL FIRE™ Workflow Manager GUI, the “*.fpr” should be opened and new post-processing items added (e.g. isosurfaces). Then the pre-defined settings for post-processing operations and viewers can be imported from the “Postprocessing_files” folder. Moreover, the files with solver set-ups (“*.ssf”) were additionally placed in the “Solver_settings_files” folder.

Acknowledgements

This study was funded by the National Science Centre, Poland, within the framework of the SONATA programme, grant number: 2020/39/D/ST8/00947.

Numerical analysis was conducted under the AVL University Partnership Program.

Dataset file

Dataset.7z
45.3 GB, S3 ETag e6b6f138e5c2774faf650c9d7b9a8883-91, downloads: 81
The file hash is calculated from the formula
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} where a single part of the file is 512 MB in size.

Example script for calculation:
https://github.com/antespi/s3md5

File details

License:
Creative Commons: by 4.0 open in new tab
CC BY
Attribution
Software:
AVL FIRE™ Workflow Manager

Details

Year of publication:
2022
Verification date:
2022-10-11
Dataset language:
English
Fields of science:
  • environmental engineering, mining and energy (Engineering and Technology)
  • mechanical engineering (Engineering and Technology)
DOI:
DOI ID 10.34808/1ztm-t743 open in new tab
Verified by:
No verification

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