Ever wondered what is the difference between verification and validation ? Does verification come through experiment ? All the cases are carried out regarding to any CFD solver have to being verified and validated within reliable sources and studies that could be Journal article, conference paper, book, etc. So, you can examine validity of CFD results. These studies might be an experimental investigation or a proven theory. Therefore, you can compare your results and check the reliability & sustainability of your case. The sight of examination by Nasa regarding verification and validation: Verification: “The process of determining that a model implementation accurately represents the developer's conceptual description of the model and the solution to the model.” Validation: “The process of determining the degree to which a model is an accurate representation of the real world from the perspective of the intended uses of the model.” Verify model, validate results. To sum up, verification of the method and validation of the results are the main ingredients of a successful outcome. Source: [1] https://www.grc.nasa.gov/www/wind/valid/tutorial/tutorial.html
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