Comsol Multiphysics - Science topic

salary group 13 TVöD [Collective agreement for the public service]; 39 hours per week) for a limited period of 3 years. The scientific work is being carried out as part of the research project 'Digi-HyPro-Digitalised Hydrogen Process Chain for the Energy Transition' to develop an energy transformation unit for coupling the gas, electricity, heatin...

This research investigates a multiphase fluid system involving water, air and its influence and behaviour of the thin aluminium foil which undergoes deformation encompassing in fluid structure interacting study. The study employs a three-dimensional numerical model developed using COMSOL Multiphysics (version 6.2), utilizing the Arbitrary Lagrangia...

This study utilized COMSOL Multiphysics to simulate the performance of a thermoelectric module (TEM) made by alumina (Al2O3), copper (Cu), and bismuth telluride (Bi2Te3) materials, specifically exploring different leg geometries. The TEM design had Al2O3 for insulation, Cu for conducting, and Bi2Te3 for TE legs between the Cu layers. Investigated t...

Pure water is an essential element for human life and other living organisms, as well as for industrial and construction processes. Many technologies have been used to produce drinking water. Most of them depend on fossil fuels as an energy source, but due to the continuous rise in fuel prices, the phenomenon of global warming, the weakness of infr...

A dual-core photonic crystal fiber (PCF) based surface plasmon resonance (SPR) sensor for measuring refractive index (RI) and temperature sensing and polarization filtering performance, is presented in this paper. The proposed sensor’s cladding upper polished surface was coated with a gold film for refractive index sensing (RI) while lower polished...

This study presents a comprehensive numerical simulation of the aerodynamic behavior of an axisymmetric model featuring a spherical convex radome at transonic Mach numbers, employing the Comsol Multiphysics software package for advanced computational analysis. The primary focus is on the shock wave dynamics that develop at the upper section of the...

As motor capacity and rated voltage increase, the demand for motor insulation also increases. Additionally, the electric field distribution at the end of a large-scale hydro generator is extremely nonuniform, and corona discharge occurs. This destroys the main insulation, which significantly affects the service life of electrical machinery. The reg...

The article is devoted to the analysis of the efficiency of using mineral wool slab fillers in a two-layer wall panel with different thicknesses of the external insulation layer. A literature review was conducted, which showed the relevance of the issue under consideration regarding the practical application of multilayer external enclosing structu...

This paper conducts a comprehensive comparison of numerical simulations of turbulent flow in a sharply expanding channel, utilizing the NASA TMR database as a benchmark. Using advanced computational tools, Ansys Fluent and Comsol Multiphysics 6.2, the study focuses on the hydrodynamic behavior of turbulent flows that are influenced by variations in...

In this study, we conducted a comprehensive numerical investigation of the transition region between laminar and turbulent flows in the context of flow around a flat plate. Utilizing advanced computational techniques, we employed both the standard SST (Shear Stress Transport) turbulence model and the transient SST turbulence model available in the...

This paper presents design and dynamic performance investigation of a 25kV $\mathbf{25}\,\boldsymbol{k}\boldsymbol{V}$ full‐scale, modular topology (arranged on the sides of a regular hexagon), medium voltage direct current (MVDC) permanent magnet (PM) biased presaturated fault current limiter (PMFCL). This PMFCL represents a cost‐effective design...

Activated carbon was synthesized from banana peel using a two-step chemical activation process and blended with poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT-PSS) to improve the electrochemical performance of screen-printed electrodes fabricated on cotton fabrics. The use of carbonized banana peel (CBP) with PEDOT-PSS to develop re...

Surrogate models are widely used for reservoir simulations in the petroleum industry to improve computational efficiency. However, the traditional surrogate model mainly relies on the data collected from production wells (e.g., well bottom pressure data and well production data) and ignores the physical mechanism of underground fluid flow; therefor...

To overcome the problems of the low signal-to-noise ratio and poor performance of wood ultrasonic images caused by ring-down vibrations during the ultrasonic quality detection of wood, a composite pulse excitation technique using a wood air-coupled ultrasonic detection system is proposed. Through a mathematical analysis of the output of the ultraso...

The interfacial photothermal‐photocatalytic systems can generate clean water while purifying wastewater containing organic pollutants, but the impact of thermal convection on synergistic effects remains unexplored. This paper aims to regulate the thermal convection at the interface to significantly enhance the synergistic effect of interfacial phot...

This work presents a photonic crystal fiber (PCF)–based surface plasmon resonance (SPR) biosensor with dual cores and bilateral-surface detection capability to enhance the early identification of cancerous cells. The biosensor processes cell samples including both malignant cancerous cells and healthy normal cells through varying refractive indices...

Physics-Informed Neural Networks (PINN) has evolved into a powerful tool for solving partial differential equations, which has been applied to various fields such as energy, environment, en-gineering, etc. When utilizing PINN to solve partial differential equations, it is common to rely on Automatic Differentiation (AD) to compute the residuals of...

This investigation presents an advanced biosensing platform integrating a Methylammonium lead halide metasurfaces with a dual-resonator architecture for high-precision waterborne pathogen detection. The engineered design incorporates a square ring resonator coupled with a graphene-functionalized circular resonator, optimized through systematic para...

This paper presents a modal analysis conducted under seabed dynamic pressure conditions. The polyethylene (PE) pipeline was approximated as a thin-walled long cylindrical shell. The impact of pressure on the pipeline structure was considered, the study investigated the circumferential dynamic characteristics. The natural characteristics of the stru...

Accurate measurement of suspended particle concentration in pipelines is essential for analyzing the fluid mixing density and particle settlement. However, measuring concentration distributions along the flow path poses significant challenges due to the inherent complexity and variability of liquid–solid two-phase suspensions. In this study, we dev...

Energy harvesting from natural sources, including bodily movements, vehicle engine vibrations, and ocean waves, poses challenges due to the broad range of frequency bands involved. Piezoelectric materials are frequently used in energy harvesters, although their effectiveness depends on aligning the device’s natural frequency with the frequency of t...

Gold-grafted melamine sponge (AuSp) was fabricated and applied as surface-enhanced Raman spectroscopy (SERS) substrate for enzyme-linked immunoassay of 2 typical mycotoxins, zearalenone (ZEN) and T-2 toxin. The gold nanoparticles were in situ grown on the sponge, and the product showed good effect in enhancing Raman signal and good stability. COMSO...

Spacer meshes in electrodialysis (ED) play a crucial role in influencing fluid and electric field distributions during mass transfer. This study employed finite element analysis using real‐world parameters to explore how spacer mesh geometry and material affect mass transport. Comparisons among different wire mesh configurations revealed increased...

Inhalers with corticosteroids and muscle relaxants are prescribed by pulmonologists to mitigate bronchospasms that happen due to tightening of the chest. An adhesive patch attached to a patient with chronic obstructive pulmonary disease can relieve episodes of bronchospasms in the event the prescribed inhaler is not nearby. This paper shows the des...

This paper proposed a theoretical model for analyzing the vibration responses of multilayer functionally graded graphene platelet-reinforced composite (FG-GPLRC) cylindrical shell under moving random loads. Four GPLs distributed patterns and two ways of moving random load are taken into account. The proposed model is established by employing differ...

Ethanol has always been an integral part of our daily life. We often use ethanol knowingly or unknowingly in many formats. Industrialists use ethanol as a primary or secondary solvent in the synthesis of organic materials, as a cleaning/ sanitising solvent which can sanitise the area where it is applied onto. As a fuel, ethanol can be used as an ad...

Submerged vegetation commonly grows and plays a vital role in aquatic ecosystems, but it is also regarded as a barrier to the passing flow. Numerical simulations of flow through and over submerged vegetation were carried out to investigate the effect of vegetation density on flow field. Numerical simulations were computationally set up to replicate...

As the interface between frozen and unfrozen soil, the ice front is not only a spatial location concept, but also a potentially dangerous interface where the mechanical properties of soil could change abruptly. Accurately identifying its spatial position is essential for the safe and efficient execution of large-scale frozen soil engineering projec...

The modulation of heterointerfaces in 2D materials is critically important for improving the electrochemical performance of sodium‐ion batteries (SIBs). In this context, the MoS2/Ti3C2Tx MXene heterostructure is taken as a typical example to reveal the fundamental principle of high sodium storage performance by regulating the terminal groups of Ti3...

Aqueous zinc ion batteries (AZIBs) are experiencing rapid development due to their high theoretical capacity, abundant zinc resources, and intrinsic safety. However, the progress of AZIBs is hindered by uncontrollable parasitic reactions and excessive dendrite growth, which compromise the durability and effective utilization of zinc metal anodes. T...

Today, the production of electricity from renewable energy sources is a priority for all countries. Specifically, there is extensive scientific research being conducted on the effective use of small and low-pressure water sources for electricity generation. This research focuses on the creation and improvement of hydropower devices in numerous lead...

Solid oxide fuel cells (SOFCs), efficient and clean energy converters, typically use hydrogen, which has low energy density and transport challenges. Methanol (CH3OH), with its high energy density and ease of storage, is an ideal alternative. This study uses a 3D multiphysics model in COMSOL to simulate methanol decomposition and the water-gas shif...

This article presents the results of research on centrifugal-rotary processing in an abrasive medium. The dynamic characteristics and rotational processes of an array of abrasive granules in the machine chamber are investigated with the aim of determining the motion velocity, contact pressure and energy of the particle flow. These research data wil...

This article is the first to simulate the changes in temperature, porosity, permeability, and displacement of oil shale reservoirs under microwave followed by steam and steam followed by microwave and to analyze the oil shale reservoirs under single steam and microwave in comparison, aiming to find out the most suitable way for in-situ exploitation...

This article describes a mathematical model of heat transfer in absorber channels developed using the «Comsol Multiphysics 5.6. program». The results are presented for determining the longitudinal flow velocity at various sections of the flow channel, heat distribution over time, as well as the heat distribution isoline and isotherm. Developed on t...

Precisely predicting soil deformation at each construction stage of foundation pit engineering is crucial for enhancing construction safety standards. However, the mechanics of ground settlement, both inside and outside foundation pits caused by pre-dewatering in an unconfined aquifer, remain unclear. Hence, this study proposes a semi-analytical so...

Phase Change Materials (PCMs) are increasingly recognized in the construction industry for their ability to enhance thermal energy storage and improve building energy efficiency. Research highlights the importance of selecting the appropriate PCM and effective incorporation strategies, which necessitate both software simulations and experimental va...

In this study, we designed and fabricated parallel-connected green micro-LEDs with three different P-electrode configurations: rounded (Sample A), cross-shaped (Sample B), and circular (Sample C). We then systematically evaluated the impact of these electrode shapes on the devices’ optoelectronic performance. The results show that the shape of the...

The degradation of complex geological structures due to thermo-mechanical cycling results in a reduction in bearing capacity, which can readily induce engineering issues such as uneven settlement, cracking, and even the destabilization of the foundations of molten salt storage tanks. This study establishes a foundational model for a molten salt sto...

In this paper, we consider transverse steady oscillations of a piezoactive bimorph in the formulation of a plane deformation. The problem is solved within the framework of linear thermoelectroelasticity, while the temperature problem is solved separately and the temperature distribution is taken into account in the constitutive relations of electro...

In order to study the effect of temperature on the alignment of a long-span special track bridge, this paper provides a theoretical basis and technical support for bridge design, construction and later operation. This research established the section model of the steel-hybrid beam by COMSOL, and the internal temperature field, transverse temperatur...

Retinal prosthetic devices aim to repair some vision in visually impaired patients by electrically stimulating neural cells in the visual system. Although there have been several notable advancements in the creation of electrically stimulated small dot-like perceptions, a deeper comprehension of the physical properties of phosphenes is still necess...

The acoustic performance of sound barrier absorption materials utilized in substations is subject to variations due to factors such as sandstorms, corrosion, and rainfall. In this study, a model of the absorbing material was developed based on the Delany–Bazley model using COMSOL simulation software, version 5.6. The influence of porosity and mater...

Spraying is currently one of the main methods of pesticide application worldwide. It converts the pesticide solution into fine droplets through a sprayer, which then deposit onto target plants. Therefore, in the process of pesticide application, improving the effectiveness of spraying while minimizing or preventing crop damage has become a key issu...

Atherosclerosis is the formation of plaque in arterial walls, thickening the blood vessel wall, thereby hardening and obstructing blood flow through the arteries. An aneurysm is an atypical enlargement or bulge in the wall of a blood vessel inside an artery caused by a weakening of the arterial wall. Arise in fatalities due to atherosclerosis and a...

This study explores the application of MATLAB, COMSOL, and Python in mathematical modeling and simulation within precision engineering. These tools are analyzed for their strengths in handling various engineering challenges, from control systems to multiphysics simulations and custom algorithm development. The study also investigates the role of ar...

In the frame of the decarbonization of steel industry, with the aim of creating new technologies and applications, Rina CSM developed for the EU project Horizon ModHEATech a electromagnetic-thermal model with Comsol Multiphysics in order to study the heating of a steel billet by induction, before rolling mills. The activity is related to the modeli...

In recent times, the issue of microplastic pollution has garnered worldwide attention as it poses threat to both the environment and wildlife, including human health. This work demonstrated a simulation of a rare earth metal-doped polymer optical planar waveguide sensor with a circular core design to realise future sensing applications of detecting...

This study presents a location method for buried polyethylene (PE) pipelines based on the double-tree complex wavelet cross-correlation delay. Initially, the dual-tree complex wavelet transform (DTCWT) is applied to denoise the acquired signal, followed by extracting the delay time through the cross-correlation function to locate the buried pipelin...

The anode foil is a critical component of aluminium electrolytic capacitors, with its performance directly impacting the overall quality of the capacitors. Currently, sintered anode foil with excellent bending resistance and high specific capacitance is considered an ideal material for capacitor manufacturing; however, research on its optimal sinte...

This study presents a comprehensive 3D numerical analysis of thermal stratification, fluid dynamics, and heat transfer efficiency across six hot water storage tank configurations, identified as Tank-1 through Tank-6. The objective is to determine the most effective design for achieving uniform temperature distribution, stable stratification, and ef...

This study proposes a buried PE gas pipeline positioning method based on the elliptical method of an acoustic signal analysis. The cross-correlation time delay positioning technology is combined with the elliptical equation, forming an effective mechanism for pipeline depth positioning. First, a dual-tree complex wavelet transform is employed to de...

To overcome the vulnerability to noise of the reconstructed image and simplify the cumbersome iteration process of algorithm in the magneto-acoustic concentration tomography with magnetic induction (MACT-MI) for magnetic nanoparticles (MNPs), we established the matrix relationship between the concentration of MNPs and the first-order derivative of...

This is a numerical heat transfer study in foams with application in volumetric receivers applied in solar plants based on concentrating solar radiation. Solar radiation coming from heliostat field is concentrated in receivers at the top of a tower. The receiver consists of some enclosures named secondary concentrator, a window glass dome, an absor...

In this work, we investigate a dynamic internal dissipation mechanism in the context of cement-based materials by introducing a 1D-enhanced micromorphic beam model with a dynamic internal friction term. Here, we consider an inherent feature in concrete-like materials arising from the multi-scale structure, namely, microcracks. Thus, we assume that...

A fast method is developed utilizing the multiple scattering theory with broadband Green’s function (MST-BBGF) to calculate band diagrams for vector electromagnetic waves in 3D periodic structures composed of irregularly shaped scatterers. The method uses the T-matrix of irregular-shaped scatterers to formulate eigenvalue problems for the KKR (Korr...

To overcome the limitations of the conventional Von Neumann architecture, inspiration from the mammalian brain has led to the development of nanoscale neuromorphic networks. In the present research, molybdenum nanoparticles (NPs), which were produced by means of gas phase condensation based on magnetron sputtering, are shown to be the constituents...

A novel PCF-SPR sensor with hybrid sensing capability is presented in this study for detecting both coronavirus and alcohol concentration simultaneously. The sensor utilizes both external and internal sensing approaches to enable simultaneous multi-analyte detection. A thin gold film applied uniformly to the entire external surface as well as the e...

A time-dependent electrochemical impedance spectroscopy (EIS) model is presented using the finite element method (FEM) to simulate a 2D interdigitated electrode in an aqueous NaCl electrolyte. Developed in COMSOL Multiphysics, the model incorporates ion transport, electric field distribution, Stern layer effects, and electrode sheet resistance, gov...