Articles techniques et présentations

Seals or gaskets that are compressed between walls of a container are important to many industrial applications. In this paper we present a fluid flow model for predicting the sealing performance of such seals. A computational study using COMSOL Multiphysics® software suggests very ... En savoir plus

Thermography measurements on metallic thin films are challenging due to reflections from the environment. We present a thin "gold black" absorption layer to deal with this issue. A multiphysics model is introduced to correct the experimentally obtained data for undesirable heat transfer ... En savoir plus

Engineering design studies of the feasibility of conversion of the High Flux Isotope Reactor (HFIR) from high-enriched uranium to low-enriched uranium (LEU) fuel are ongoing at Oak Ridge National Laboratory as part of an effort sponsored by the U.S. Department of Energy’s Global Threat ... En savoir plus

Biosensors based on silicon nanowires are of great interest for ultrasensitive biomolecular recognition of disease specific markers for early stage diagnosis [1]. However, there are limitations on the performance of these nanosensors in solutions at high ionic strength. This is because ... En savoir plus

COMSOL® software was used to simulate the conductive heat transfer with phase change in the geological formations encompassed in permafrost surrounding a shallow thaw lake. The purpose of the simulation was to verify the adequacy of COMSOL to model such phenomena by comparing the COMSOL ... En savoir plus

A simple steady-state photo-fermentative biochemical model was developed using the COMSOL Multiphysics'® Transport of Diluted Species physics interface. A dimensionless model seeks optimal physical parameters based on given biochemical parameters found in literature. A parametric sweep ... En savoir plus

Abstract: As a environmentally friendly thermal energy harvesting device, thermoelectric generator (TEG) can convert heat into electricity directly. Therefore, researchers have made great efforts to detailed explanation the principium including established many steady-state models to ... En savoir plus

隐伏地质构造是影响煤矿安全生产的主要因素，准确识别地质构造在槽波地质勘探研究中显得尤为重要，本文采用支持向量机的方法对槽波地质构造进行识别，首先用COMSOL仿真软件对采空区、冲刷带、陷落柱、小断层、褶曲5种不同地质构造进行模拟仿真，随后采集对每类地质选取了多个不同的测量点得出的仿真数据726组，预处理数据进行特征构建，分别进行时间分块方差统计、频域分块能量统计、时序信号总体的均值、方差、平均能量、最大最小值差统计。 接下来用支持向量机对不同地质构造进行识别，主要用到支持向量机回归，通过MATLAB编写SVM来对该分类问题的数据进行训练和预测 ... En savoir plus

优先流作为结构性土壤水分入渗的主要方式，影响着作物对降水以及灌溉用水的利用效率，同时影响污染物在土壤中的迁移过程。虫洞等大孔隙是产生优先流的重要因素，准确评估优先流运动对于土壤入渗的研究具有重要意义。本文主要借助COMSOL Multiphysics软件，探索虫洞的存在对土壤水分入渗的影响。我们结合熔锡灌注法和三维激光扫描法，从田间土壤中提取到真实的虫洞三维结构，然后将真实的虫洞3D结构导入COMSOL5.5中，构建土壤入渗模型。该模型主要用到多孔介质和地下水流模块的理查德方程，其中土体主要由虫洞和土壤基质两部分构成 ... En savoir plus

Combining slot wave propagation theory and communication related theories, introducing the formation and classification of slot waves and other related theories. Analyze the typical geological structure in the coal seam of the scour zone and the reasons for its formation. Channel ... En savoir plus