报告人：林增博士（中科院深圳先进技术研究院）
邀请人：微分方程数值解课题组
报告时间：2022年3月29日15:00-17:00
报告地点：腾讯会议ID:844-986-560
报告题目：A Highly Parallel Simulation of Patient-specific Hepatic Flows
报告摘要：Computational hemodynamics is being developed as an alternative approach for assisting clinical diagnosis and treatment planning for liver diseases. The technology is non-invasive, but the computational time could be high when the full geometry of the blood vessels is taken into account. Existing approaches use either one-dimensional model of the artery or simplified three-dimensional tubular geometry in order to reduce the computational time, but the accuracy is sometime compromised, for example, when simulating blood flows in arteries with plaque. In this work, we study a highly parallel method for the transient incompressible Navier-Stokes equations for the simulation of the blood flows in the full three-dimensional patient-specific hepatic artery, portal vein and hepatic vein. As applications, we also simulate the flow in a patient with hepatectomy and calculate the portal pressure gradient. One of the advantages of simulating blood flows in all hepatic vessels is that it provides a direct estimate of the portal pressure gradient, which is a gold standard value to assess the portal hypertension. Moreover, the robustness and scalability of the algorithm are also investigated. A 83% parallel efficiency is achieved for solving a problem with 7 million elements on a supercomputer with more than 1000 processor cores.
报告人简介：博士，助理研究员。厦门大学计算数学专业博士（2019），澳大利亚昆士兰科技大学联合培养博士（2018）。主要从事计算数学和计算力学方面的研究工作。研究方向包括：高性能计算及其在人体血流动力学中的应用，整数/分数阶偏微分方程的高效有限元和无网格求解方法。在International Journal for Numerical Methods in Biomedical Engineering、Computational Mechanics和Engineering Analysis with Boundary Elements等期刊发表学术论文十余篇。主持中国博士后科学基金面上项目、深圳市优秀科技创新人才培养项目和中国科学院深圳先进技术研究院优秀青年创新基金。中国工业与应用数学学会会员,担任Applied Numerical Mathematics、Numerical Methods for Partial Differential Equations和Journal of Computational and Applied Mathematics等期刊的审稿人。
bwin必赢
2022年3月26日
