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Sehen Sie sich die Kollektion für die COMSOL Conference 2024 an
Passive, one-way valves, also known as check valves, while common at the macro scale, are an essential microfluidic feature that facilitate flow rectification. These structures are also commonly used in reciprocating micropump configurations to control flow. Their operation can be ... Mehr lesen
It is well-known that metal nanoparticles (NPs) excited at the plasmon frequency not only exhibit peculiar optical properties (e.g., a peak in the extinction spectrum, an enhanced electromagnetic near-filed) but also heat up [1]. This phenomenon is highly investigated for medical ... Mehr lesen
Hydrogen Embrittlement (HE) is one of the mechanisms responsible for premature failure of structures. In the context of environmental sustainability, it is compelling to improve or conceive new processes and/or new materials capable of reducing fracture induced by HE. We analyzed the ... Mehr lesen
In a commercial 3D printer head, plastic ribbon passes through a hot nozzle of an extruder to dispense liquid plastic droplets to construct the model. In this paper a 2D axisymmetric model of a 3D head is considered to study the secondary transition change from below the glass ... Mehr lesen
Ever since its advent optical fibers have revolutionized the communication technology but apart from communication they are being used in a variety of other areas such as medical technology, sensing, laser sources in the form of fiber lasers, amplifiers, cutting and drilling, defense ... Mehr lesen
钴基高温合金，因其优异的高温综合性能而被广泛应用于航空发动机制造等领域，激光增材制造是制造几何形状复杂的高温合金零件的有效途径。目前，高温合金增材制造中，缺陷与组织成分的控制是关键的技术瓶颈，而这两方面的问题都与熔池中的热质传输过程密切相关，因此我们将研究的方向着眼于揭示熔池流动背后复杂的物理现象。本研究基于 COMSOL 多物理场耦合，应用 ht、tpfmm、tcs 接口，提出了适用于高温合金多组分热质传输的数值模型，研究了温度梯度G以及凝固速率R对界面围观凝固组织的影响以及钴基合金中主要成分 Fe、C、Co、Cr 的传质特性以及成分分布 ... Mehr lesen
Within this paper the so called “birth and death” method is demonstrated in use with COMSOL Multiphysics®. With this method the free and reactionless movement of a solid structure on deformed geometries and the activation of this solid structure at later simulation steps is possible. For ... Mehr lesen
An attempt was made, as described in this paper, to assign material properties like shear strength and modulus of elasticity randomly. In this way, the behaviour of a masonry wall with a prefabricated concrete lintel was experimentally tested and simulated using COMSOL. The paper ... Mehr lesen
Optical tweezers work on the idea of non-contact Optical Pressure felt by transparent particles, when shined by coherent light source such as lasers. On the other hand when light falls on the metal it excites the electron inside it and make them free. When these free electron cloud ... Mehr lesen
A promising method for low cost production of efficient silicon thin film solar cells is the electron beam physical vapor deposition (EB-PVD) of high purity amorphous silicon (a-Si) layers with high deposition rates up to 300 nm/s [1] followed by crystallization. This study focuses on EB ... Mehr lesen