See How Multiphysics Simulation Is Used in Research and Development
Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.
View the COMSOL Conference 2023 Collection
传统声表面波(SAW)滤波器技术存在Q值低(<1000)和频率随工作温度漂移的特性,已经难以满足频段越来越拥挤的5G时代射频终端对滤波器的要求,因此,传统的SAW滤波器必须向具备高频率-温度稳定性的温度补偿型SAW(TC-SAW)滤波器发展。鉴于SiO2层与压电层具有相反温度弹性的特性,且该工艺比另一种键合温补方法简单、成本低,是目前国内外声表厂家广泛采用的一种温补方式。 对该种TC-SAW谐振器进行COMSOL建模仿真,研究SiO2层、指条层厚度对SAW波导的影响,以及材料参数和结构尺寸与SAW滤波器频率温度系数(TCF)及机电耦合系数之间的关系 ... Read More
A computer simulation model was developed using finite element-based commercial software, COMSOL Multiphysics®, to simulate temperature distributions in wheat samples packed in a rectangular plastic container and treated in a 6 kW, 27.12 MHz RF system with and without mixing conditions. ... Read More
Radio frequency (RF) drying is a novel drying technology. During the RF drying process, the internal and external temperature of the food material is elevated simultaneously when traditional heating method relies on heat transfer from the surface to the inside, which greatly improving ... Read More
Perfect absorbers have been intensely studied in recent years because of the fundamental physics and application potentials in many areas such as cloaking, detectors or communication [1, 2]. To achieve absorber working in the terahertz (THz) range, various devices composed of noble metal ... Read More
探地雷达作为无损检测方法,在路面病害检测中已经得到越来越多的应用,但是由于路面内存在大量空隙,而这些空隙如何影响病害的识别不得而知。该模拟主要解决使用探地雷达进行路面内病害检测时,电磁波在随机空隙分布路面内的传播状况分析。模型设置中,首先用矩形代替路段,然后通过编程产生随机圆形,使圆形分布在矩形内并控制其总面积并将圆形统一到一个并集,做差集将圆形从矩形中减去;分别赋予圆形并集和矩形差集不同的材料参数。在研究中应用波动光学模块中的电磁波瞬态,将整个模型置于波动方程中,并对模型外边界采用散射边界条件,其中上边界的散射边界条件给予入射电场以产生电磁波 ... Read More
为抑制离子轰击靶材,提高亚稳态原子密度而提出了离子筛选 ICP(I-F ICP)设备,可以有效地抑制带电粒子到达靶材表面,亚稳态原子与电子/离子数量比值明显提高,有助于 CVD 工艺中靶材表面的活化。本文通过 COMSOL Multiphysics® 中耦合等离子体和流场接口对 I-F ICP 腔室建模仿真,腔室结构见图1,应用氩气放电仿真研究了离子筛网的过滤效果。首先对比有无耦合流场的结果,结果显示了耦合流场仿真的必要性。用等离子体场与流场耦合计算,等离子体场为流场提供流体的特性参数密度和动力学粘度系数,流场接口为等离子体接口提供速度场和决定压力等参数并提供进、出气口 ... Read More
海洋覆盖了地球表面百分之七十以上的面积,其中蕴藏着丰富的生物矿产资源,日益受到世界各国的重视。声波作为海水中传输信号的唯一载体,在浅海波导中的传播受海底和海面影响很大,当声波在浅海波导中发生折射反射和散射时,如何预报复杂海底边界条件下浅海中的传播特性对海洋开发有重要意义。针对含有声速剖面的沉积层海底、楔形海底及实际弹性海底,利用有限元理论,对二维浅海声场的传播损失进行数值模拟。应用 COMSOL Multiphysics® 软件的声压接口和声结构耦合接口,把地形数据导入软件模拟真实海底的地形。把浅海波导简化成分层矩形,信号源以点声源的形式向外发射单频信号 ... Read More
This paper introduces the concept, research methods and application of photonic crystals. Starting from Maxwell's equations, the functional form of the TE mode and TM mode of the 2D crystal is derived. In 2D crystal, according to the functional forms, we conduct some stimulation about ... Read More
超材料是一类具有天然材料所不具备的特殊性质的材料[1-3]。近年来,有学者开始研究超材料对波的旋转效应,这一研究有着工程应用价值。江雪等[4]设计并实验验证了一种声场旋转器。江雪等[5]进一步研究了声场旋转器整体尺寸大小对其工作带宽的影响及声场旋转器中心处的旋转角度与其结构单元长度的关系。但未见声场旋转器结构单元尺寸对其工作带宽影响的研究。 本文采用 COMSOL Multiphysics® 的声学模块和结构力学模块模拟图1的俯视二维结构,采用完美匹配层以获得更好的模拟结果。 本文模拟了5个声场旋转器在不同频率下的声场,发现随着长方体结构单元长宽比的增加 ... Read More
Surface Plasmon Polaritions (SPPs), as electromagnetic waves localized at the surface of a metal, enjoy the unique properties to confine energy into sub-wavelength scale, which is beneficial for future photonic integration. However, the severe absorption caused by the metal influences ... Read More