Data accompanying Chapter 4 of the PhD Dissertation: Methanol Sprays in Marine Internal Combustion Engines: A Computational Fluid Dynamics Approach

<strong>Introduction</strong>This dataset contains the results and inputs files collected as part of the Chapter 4 in the doctoral thesis of Mr. Konstantinos Zoumpourlos, Dipl.-Ing in Delft University of Technology, 2022-2026.The present dataset is made public to act both as supplementary data for the publications of K. Zoumpourlos and to offer other researchers the ability to use this data in their own work.This data is part of the MENENS project (Methanol als Energiestap Naar Emissieloze Nederlandse Scheepvaart).The project is funded by the Netherlands Enterprise Agency (RVO: Rijksdienst voor Ondernemend Nederland) under the grant number MOB21012.<br><strong>Purpose of the dataset</strong>The purpose of these simulations is to recreate the multi-hole automotive-style Spray M1 experiment by the Engine Combustion Network (ECN). The simulated condition is linked to direct injection of methanol using high injection pressure in the context of premixed internal combustion engines. The CFD framework was calibrated to achieve validation using the state-of-the-art spray models and by leveraging the methanol-dedicated ECN Spray M1 experimental dataset. <br><strong>Description of the dataset</strong>Input files for the calibrated RANS and LES CFD models for ECN Spray M1 conducted in CONVERGE-CFD 3.1.Additionally, mean-value 0D and 3D spatial data are included for the simulation cases, as well as the experimental ECN results. This data corresponds to the Projected Liquid Volume (PLV) maps of the 3D spatial Liquid Volume Fraction (LVF). The data are stored in .mat Matlab tables and .csv excel files ("ECN_post_processing" directory). Inside each directory, the input files (.dat and .in files), 0D results (text format .out files) and 3D results (text format .h5 files for the RANS model only) are denoted by their respective directory names.Finally, a matlab script named "Results-Plot.m" is included in the RANS_calibrated-model directory, which recreates the figures for the liquid penetration, liquid boundary, and 2D XY-plane LVF map. To run the script, the "ECN_post_processing" directory (containing the CFD results) and the "ECN_SprayM1_experimental-dataset" are needed for the successful execution. The experimental results are provided open-access by the ECN organization and more information can be found in the respective website (link: https://ecn.sandia.gov/).<br><strong>Dependencies</strong>To open the simulation input files CONVERGE 3.1 is needed. However, for the inspection of the modelling constants, initial &amp; boundary conditions, it is possible to use a text editor to read the inputs.To run the Matlab result plotting script, the plotci.m function is required for the illustration of the confidence intervals in the liquid penetration plots.The 0D simulation results can be opened using Excel, Matlab, or other table reading software. Lastly, the 3D output files can be accessed using any CFD post-processing software such as Paraview, Tecplot, etc.

## 数据集概述
本数据集包含康斯坦丁诺斯·祖姆普洛斯（Konstantinos Zoumpourlos）先生2022-2026年代尔夫特理工大学博士论文第四章所收集的结果与输入文件。本数据集公开发布，既可作为康斯坦丁诺斯·祖姆普洛斯发表论文的补充数据，也可为其他研究人员开展相关研究提供数据支持。本数据隶属于MENENS项目（Methanol als Energiestap Naar Emissieloze Nederlandse Scheepvaart，甲醇作为荷兰零排放航运能源载体项目），该项目由荷兰企业局（RVO: Rijksdienst voor Ondernemend Nederland）以编号MOB21012的资助项目支持。

## 数据集用途
本系列模拟旨在复现发动机燃烧网络（Engine Combustion Network，ECN）的多孔汽车式Spray M1实验。模拟工况对应预混式内燃机场景下采用高喷射压力的甲醇直喷过程。本研究通过采用前沿喷雾模型，并依托专用甲醇ECN Spray M1实验数据集，完成了CFD框架的校准与验证。

## 数据集说明
本数据集包含在CONVERGE-CFD 3.1中开展的ECN Spray M1实验所用到的校准后雷诺平均模拟（Reynolds-Averaged Navier-Stokes，RANS）与大涡模拟（Large Eddy Simulation，LES）模型输入文件。此外，数据集还包含各模拟工况的0维均值数据、3维空间数据以及ECN实验结果。上述数据对应3维空间液体体积分数（Liquid Volume Fraction，LVF）的投影液体体积（Projected Liquid Volume，PLV）图谱。数据以.mat Matlab表格文件与.csv Excel文件格式存储，存放于"ECN_post_processing"目录中。在每个子目录内，输入文件（.dat与.in格式文件）、0维结果（.out文本格式文件）以及3维结果（仅RANS模型采用.h5格式文件）均以对应子目录名称进行标识。

此外，RANS_calibrated-model目录下包含名为"Results-Plot.m"的Matlab脚本，可复现液体贯穿度、液体边界以及二维XY平面LVF图谱的可视化图形。运行该脚本需依赖"ECN_post_processing"目录（存储CFD结果）与"ECN_SprayM1_experimental-dataset"目录方可成功执行。本实验数据集由ECN组织开源提供，更多信息可访问其官方网站（链接：https://ecn.sandia.gov/）。

## 依赖说明
打开模拟输入文件需使用CONVERGE 3.1软件；若仅需查看建模常数、初始条件与边界条件，可通过文本编辑器读取输入文件。运行Matlab结果绘图脚本时，需依赖plotci.m函数以绘制液体贯穿度图谱中的置信区间。0维模拟结果可通过Excel、Matlab或其他表格读取软件打开。最后，3维输出文件可通过任意CFD后处理软件（如Paraview、Tecplot等）进行访问。