Sample interview questions: What steps do you take to ensure the reproducibility and reliability of numerical simulations in your research?
Sample answer:
To ensure the reproducibility and reliability of numerical simulations in my research, I follow a systematic approach that includes several key steps.
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Verification: I begin by verifying the accuracy of the numerical algorithms and codes used for simulations. This involves comparing results from the simulation with analytical solutions or with results obtained using other established methods. By doing so, I can identify any discrepancies or errors in the code and rectify them before proceeding further.
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Validation: Once I have verified the accuracy of the numerical algorithms, I move on to validating the simulations against experimental or observational data. This step helps ensure that the simulation results accurately represent the real-world phenomena under investigation. By comparing simulation outputs with experimental data, I can assess the reliability of the simulations and identify any discrepancies or limitations.
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Sensitivity analysis: I perform sensitivity analyses to examine how the simulation results are affected by changes in input parameters or assumptions. This step allows me to quantify the uncertainties associated with the simulation and assess the robustness of the results. By varying certain parameters within reasonable ranges, I can determine the sensitivity of the simulations and evaluate their reliability.
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Error analysis: I conduct a rigorous error analysis to quantify the uncertainties and errors associated with the numerical simulations. This involves assessing the propagation of errors from input parameters, boundary conditions, and approximations made in the simulation. By understanding the sources of erro… Read full answer