Biomedical simulation of heat transfer in a human heart |
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Authors: | Sterk Marjan Trobec Roman |
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Institution: | JoZef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia. marjan.sterk@ijs.si |
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Abstract: | Theory and practical experiences from numerical simulations of heat transfer in the field of medicine are presented in this paper. The cooling of a human heart during surgery was taken as an illustrative example. All phases of the simulation process are described starting with the construction of an irregularly shaped 3-dimensional model. The mathematical model is based on diffusion and Navier-Stokes equations. The system of partial differential equations is solved by finite difference approximation using an explicit time-stepping scheme to obtain the time evolution of the solution for the complete simulated interval, which is typically 1 h. A typical domain is composed of several million voxels; therefore, the program was parallelized to speed up the simulation. A speed-up of 8.2 was obtained on 16 processors in a Linux cluster. |
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