Scopri come la simulazione multifisica viene utilizzata per ricerca e sviluppo
In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.
Visualizza gli articoli presentati alla COMSOL Conference 2020
Numerical Simulation of Blood Flow in a Straight Artery Under the Influence of a Magnetic Field
In this work, we have developed a three-dimensional numerical simulation for blood flow through an arterial segment in the presence of an externally applied magnetic field. The study bears the potential applications in simulation-based medical planning system for cardiovascular disease ... Per saperne di più
Smart Chest Belt for Cardiac Health Monitoring
Conventional cardiac electrical signal monitoring and measurement techniques such as Electrocardiograph (ECG) are prone to operator error due to multiple lead attachment requirements. These multiple electrode based systems are also not convenient for continuous cardiac health monitoring, ... Per saperne di più
Comparative Study on 3D Modeling of Breast Cancer Using NIR-FDOT
Fluorescence Diffuse Optical Tomography (FDOT) uses Near Infra-Red (NIR) light to monitor physiological changes in internal organs. NIR light being less energetic in nature can be used for continuous monitoring of tumor infected biological tissue, neonatal brain and many such ... Per saperne di più
Updated Results of Singlet Oxygen Modeling Incorporating Local Vascular Diffusion for PDT
Introduction: Singlet oxygen (¹O₂) has a critical role in the cell-killing mechanism of photodynamic therapy (PDT). Therefore, in this study, the distance-dependent reacted ¹O₂ is numerically calculated using finite-element method (FEM). Herein, we use a model [Ref. 1] that has been ... Per saperne di più
血管对肿瘤的光热疗法的影响
引言：激光诱导间质肿瘤热疗法是一种可使生物组织局部地方凝结坏死的肿瘤疾病治疗方法，目前已经用于肝、脑等各部位的肿瘤治疗[1-2]。为了更好地进行肿瘤疾病的治疗，需要实时地对组织的温度和热损伤进行监控，而检测技术很难实现对肿瘤治疗过程的实时监测，故数值计算成为研究光热疗法的有力工具[2-6]。本模型将生物组织光传输的物理场与热传输的物理场相耦合，考虑组织光热参数随温度变化的情况，研究了肿瘤周围含有大动脉的情况时组织的温度分布随时间的变化情况，研究结果对指导临床医学肿瘤治疗有重要意义。 COMSOL Multiphysics® 的软件使用： 几何模型：如图1所示 ... Per saperne di più
基于 DTI 纤维追踪和有限元力学模型的脑损伤轴突纤维损伤研究
研究头部损伤机理是对运动撞击中脑损伤进行预测的有效手段。数学模型是分析损伤实验数据、预测人员碰撞损伤程度的唯一方法，但现有的头部损伤有限元模型基于尸体实验数据，且忽略脑组织结构的各向异性。本项目旨在提出并实现一种以损伤生物力学为基础、结合磁共振扫描 DTI 的轴突走向信息的有限元力学模型。提取脑外伤前的弥散张量成像信息，实现深入到轴突水平有限元力学模型的建立，在有限元模拟中采用非线性超弹性力学模型，并植入 NSGAII 最优化方法对有限元模型的材料参数进行优化，从而提高模型的稳定性和计算精度；将计算预测结果与损伤后 DTI 的 FA 值所表现的轴突断裂情况进行验证， ... Per saperne di più
MCA 动脉瘤血流动力学分析
动脉瘤破裂是引起蛛网膜下腔出血的一种主要原因。结合 COMSOL Multiphysics® 灵活的几何建模特性以及强大的流体仿真求解能力，本文分别对两组不同大小关系的 MCA 动脉瘤理论模型进行了仿真建模分析。通过模拟分析，获得了动脉瘤球囊体长度和宽度与动脉瘤基底宽度不同比例条件下的动脉瘤速度、压力、壁面切应力（WSS）等参数的变化规律，分析了几何形态与动力学参数之间的关系。模拟结果显示：1、宽颈动脉瘤，瘤体内部旋流强度较之窄颈动脉瘤更强，中心区流速更低，更有利于形成血栓而且顶点处压力更大，更易破裂。2、增大动脉瘤宽度与基底直径的比值，顶点处 WSS 呈非线性增长 ... Per saperne di più