Lattice Boltzmann Methods for Real Time Simulations of Complex Physics, blood flow

用于复杂物理、血流实时模拟的格子玻尔兹曼方法

• 批准号: 239739-2013
• 负责人: Mohamad, Abdulmajeed
• 金额: $ 1.68万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=524628
• 关键词: Lattice; Boltzmann; Methods; Real; Time

Complex physics and multi-phase flows with and without heat and mass transfer can be encountered in many industrial, biological, environmental, and geophysical processes; for instance, blood flow in deformable channels. The blood consists of red and white blood cells and platelets. These immiscible particles are deformable and float in a plasma which flows in elastic channels, adding further complexity to the problem. Recently, there has been a growing interest in applying the Lattice Boltzmann method (LBM) to solve flow problems, which has emerged as a powerful technique to tackle physical problems. The LBM is easy to code, and enjoys the flexibility of allowing the inclusion of multi-physics to solve the problems at hand. However, the method is relatively new; much room remains for expanding it, especially in the realm of multi-physics. The main objectives of this proposal are: to understand the physics of complex blood flows in deformable and non-smooth vessel to mimic a real blood flow. Also, to study heat and mass transfer associated with blood flow. More realistic models for blood flow in specific and multiphase flows in general need to develop and solve, which enhance our understanding the physics of blood flow blockage, drug delivery processes and health problems associated with it. It is intended to develop mathematical models for such systems using a unified approach based on discrete method, the LBM. The developed models will be applied to specific problems (blood flow, flows in biological cells, oil and water droplets, etc.). Also, the model will take advantage of the local nature of LBM to utilize multi-processor computers with graphic card to speed real time simulations. The long-term objective is to develop a unified platform to model fluid flow and solid interaction with visual interface, real time simulation. Moreover, lab scale experiments will be performed to validate the developed models. The experimental data and flow visualizations will add to reinforce our understanding of the physics of the complex phenomena under consideration. The project will train several graduate students and prepare them for solving multi-disciplinary, challenging industrial/biological problems.

在许多工业，生物学，环境和地球物理过程中，可以遇到有或没有热量和传质的复杂物理和多相流。例如，可变形通道中的血液流动。血液由红色和白细胞和血小板组成。这些不混溶的颗粒是可变形的，并漂浮在弹性通道中的血浆中，从而增加了问题。最近，人们对应用晶格Boltzmann方法（LBM）的兴趣越来越兴趣解决流动问题，这已成为解决物理问题的强大技术。 LBM易于编码，并具有允许包含多物理学来解决手头问题的灵活性。但是，该方法相对较新。扩展它的空间仍然存在，尤其是在多物理学领域。该提案的主要目的是：了解可变形和非平滑血管中复杂血流的物理，以模仿真实的血液。同样，研究与血流相关的热量和传质。通常需要开发和解决的特定和多相流中血流的更现实模型，这增强了我们对血液流动阻滞，药物输送过程和与之相关的健康问题的理解。它旨在使用基于离散方法LBM的统一方法为此类系统开发数学模型。开发的模型将应用于特定问题（血流，生物细胞中的流动，油和水滴等）。此外，该模型将利用LBM的局部性质利用具有图形卡的多处理器计算机来实时模拟。长期目标是开发一个统一的平台，以建模流体流量和与视觉界面，实时模拟的固体相互作用。 此外，将执行实验室规模实验以验证开发的模型。实验数据和流量可视化将增加，以增强我们对所考虑的复杂现象的物理学的理解。 该项目将培训几名研究生，并为解决多学科的，具有挑战性的工业/生物学问题做好准备。