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
能量存储技术是减少能量浪费和节约能源的最为有效的手段之一。热化学储能技术具备高功率、大容量和低损耗的特点,在实际应用中可近乎无损耗地进行跨季节性利用,上述优点使得热化学储能近年来吸引了国内外学者的广泛关注。热化学能存储过程涉及流动、传热、传质、反应多个物理过程,为了完成实验室级测试到工业级应用的推广,储能设备的仿真模拟是必不可少的一环。为了简化计算,目前几乎所有的数值研究都假设储能材料的孔隙率为均匀且定常的;但在实际的物理过程中,孔隙率与反应程度紧密相关并随时间和空间变化。本文通过推导建立孔隙率变化的热化学储能模型 ... Per saperne di più
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
基于电化学-热耦合模型,模拟了常温条件下 LiFePO4 /Graphite 锂离子电池的放电过程,并对电池内部正负电极各个位置的电化学反应速度演化规律进行了模拟计算研究。结果表明:放电过程中电极各处的反应速率不同,且是动态变化的。 Electrochemical Thermal Model Based Research for Electrochemical Performance of Lithium Ion Batteries Jia Ming, Tang Yiwei, Cheng Yun, Du Shuanglong, Li Jie (School of ... Per saperne di più
节能、高效、紧凑已经成为制冷空调行业的发展趋势,其中强化换热技术尤为关键。因此,本文采用COMSOL软件对微型错排管换热器进行了建立二维模型,基于瞬态模型,采用流动和传热模块进行有无交变压力波的数值模拟分析。结果发现随着交变压力波的添加大大增加了速度场、压力场及温度场的波动情况,使得管内工质边界层破坏降低了传热的热阻综合空化链式理论,交变压力波能够起到强化传热的作用,提高了制冷效率,有利于推动制冷行业的发展。 Per saperne di più
In this paper, we use the PDE interface of COMSOL Multiphysics® software to implement the 2.5D frequency wave-number domain method to investigate the wave propagation in a deviated borehole penetrating a transversely isotropic formation. A convolutional perfectly matched layer is ... Per saperne di più
Linear motor has a lot of applications, such as magnetic levitation train, electromagnetic weapons. It is a very important research significance. We established a three-dimensional model of linear motor to calculate the magnetic field lines and flux density distribution, and got the ... Per saperne di più
在页岩或致密储层油气开发过程中,水力压裂技术得到了广泛引用。在传统的油藏数值模拟中,裂缝参数如导流能力等一般是给定值,而在低渗致密储层实际开发过程中,受铺砂浓度等影响,压裂裂缝只有部分发挥增产效果,可以称之为有效裂缝。 考虑铺砂浓度随裂缝长度的变化关系,基于COMSOL地下水模块和裂隙流模块,建立了致密砂岩储层压裂开发渗流数值模型。模型通过对达西定律模型进行修改,以考虑启动压力梯度对渗流规律的影响。同时针对致密储层的两种裂缝形态:经典长缝和网状体积缝,分别进行了有效缝长和有效改造体积的定量分析与评价。 本文从铺砂造缝,储层特性,生产制度等方面进行影响因素分析 ... Per saperne di più
High magnetic field research has yielded fruitful results. Since 1913, associated with the magnetic field there are 19 Nobel Prizes, including a prize for medicine, five chemistry prizes, and 13 physics prizes. In recent years, the international community under the conditions of strong ... Per saperne di più
飞机燃油系统雷电防护是飞机设计中需要考虑的一个重要部分。用实验方法研究成本较高,且周期长,数值仿真方法具有明显的优势。本文基于COMSOL Multiphysics有限元仿真软件,建立内部带有液压管和燃油管的燃油箱系统模型。通过电-热耦合仿真考察雷电流在燃油箱上的传导路径,根据电流分布及温度分布给出成为潜在点火源的位置。进而对比研究了两端是否屏蔽对燃油系统上雷电流物理特性的影响。仿真结果表明:飞机燃油箱系统遭受雷击时,成为潜在点火源的位置有卡箍边沿、17号肋与燃油管和液压管连接处、燃油管和液压管以及桁条上距离16号肋和18号肋上开孔较近的地方 ... Per saperne di più
Academician Yao is an expert in nonlinear optics and THz studies and also a consultant of Chinese government for scientific development. In this talk, he introduces various research progress based on COMSOL Multiphysics analysis of his team, including photonic crystal devices (both ... Per saperne di più