Journal
COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
Volume 15, Issue 7, Pages 771-778Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10255842.2011.560842
Keywords
pulmonary airflow simulation; patient-specific modelling; high-performance computing; multi-GPU computation; lattice Boltzmann method
Funding
- Grants-in-Aid for Scientific Research [23360046] Funding Source: KAKEN
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In this paper, we propose a novel patient-specific method of modelling pulmonary airflow using graphics processing unit (GPU) computation that can be applied in medical practice. To overcome the barriers imposed by computation speed, installation price and footprint to the application of computational fluid dynamics, we focused on GPU computation and the lattice Boltzmann method (LBM). The GPU computation and LBM are compatible due to the characteristics of the GPU. As the optimisation of data access is essential for the performance of the GPU computation, we developed an adaptive meshing method, in which an airway model is covered by isotropic subdomains consisting of a uniform Cartesian mesh. We found that 4(3) size subdomains gave the best performance. The code was also tested on a small GPU cluster to confirm its performance and applicability, as the price and footprint are reasonable for medical applications.
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