Computational Fluid Dynamics for Engineers by Klaus A. Hoffmann
Simulation of pulmonary air flow with a subject-specific boundary condition
Multiphase Flow Dynamics 1 pp Cite as. The computational fluid mechanics produces a large number of publications in which the mathematical notation of the basic principles and of the thermodynamic relationships is often taken by the authors for self understanding and is rarely explained in detail. One of the prominent examples is the different notation of the energy conservation for flows in the literature. The vector of the dependent variables frequently used may contain either specific energy, or specific enthalpy, or specific entropy, or temperature etc. If doing the transformation from one vector into the other correctly the obtained systems of partial differential equation must be completely equivalent to each other. That is why recalling the basics once more seems to be of practical use in order to avoid misunderstandings. Unable to display preview.
Introduction to Computational Fluid Dynamics (CFD)
Engineering Education System, ISBN: WIT Press, , pages This book provides comprehensive chapters on new research and developments in emerging topics in numerical methods in this important field, co-authored by eminent researchers. The book covers such topics as the finite volume method, finite element method, and turbulent flow computational methods. Fundamentals of the numerical methods, comparison
We present a novel image-based technique to estimate a subject-specific boundary condition BC for computational fluid dynamics CFD simulation of pulmonary air flow. The information of regional ventilation for an individual is derived by registering two computed tomography CT lung datasets and then passed to the CT-resolved airways as the flow BC. The CFD simulations show that the proposed method predicts lobar volume changes consistent with direct image-measured metrics, whereas the other two traditional BCs uniform velocity or uniform pressure yield lobar volume changes and regional pressure differences inconsistent with observed physiology. Computational fluid dynamics CFD has become a vital tool in understanding the nature of pulmonary air flow in the human lungs from the large central bronchial airways to the acinar regions. A representative though not exhaustive list of such studies can be found in Choi et al. One of its applications is to predict the local deposition of pollutant or therapeutic particles for the purpose of understanding the etiology of lung pathology and for the improvement of drug delivery methods.