Simbios Talk by Alberto Figueroa, Stanford University, October 4, 2006

Title: The Coupled-Momentum Method for Fluid-Structure Interactions: Verification with Womersley Elastic Tube Theory and Applications to Large-Scale Subject Specific Models

Verification and Validation (V&V) in computational science and engineering is the subject that deals with evaluating the reliability and accuracy of the results provided by computer models of physical processes. More specifically, Verification is the science that addresses the quality of the numerical treatment of some mathematical model. This involves two different components:
-Code verification: the process of determining if a code faithfully implements a computational model (i.e., bug-free).
-Solution verification: this is concerned with the numerical accuracy with which the mathematical model is approximated by the computer model.

On the other hand, validation of a computational model involves the comparison of the results predicted by the model with those observed in the physical world. It follows then that when developing a computational model, verification should precede validation as a necessary step to address the reliability of the model. Once this reliability is verified, the code can be validated by solving real-world problems, and comparing the quality of the solutions provided by it with experimental measurements.

In this talk, we address the verification of the CMM-FSI as a computational model of Womersley's deformable wall mathematical model.

We then present the application of the method to a large patient-specific model of the main arteries of chest, neck and head, stressing some of the challenges of the simulation process.