技術情報とプレゼンテーション

Pyrometallurgical furnaces are used to produce metals such as copper, nickel and platinum by the smelting process. During smelting, the undesired material components are separated from the desired metal resulting in the formation of a slag and matte/metal phase. The slag phase ... 詳細を見る

The erosion of the interior of soil pipes is an important process in the fields of geomechanics and geomorphology. Soil pipes can form in water holding structures like dams and levees, and water flow through these structures becomes concentrated into the soil pipes as they evolve by the ... 詳細を見る

To reveal key features of the thermal pattern at different structural levels of the Norwegian continental shelf and the adjacent mainland, the lithosphere-scale 3D structural models have been used to represent a structure of the sedimentary cover, underlying crystalline crust, and ... 詳細を見る

Investigating the unusual neotectonic activity in northern Norway provides a number of challenges since both far-field and near-field stresses need to be considered. The far-field background stress strongly controls the overall stress regime. The regional stress field stems from the ... 詳細を見る

鉴于煤岩体“孔—裂隙”双重介质属性，利用COMSOL软件建立了含有孔、裂隙结构的煤岩基质细观结构模型。在模型中采用固体力学模块、层流模块、达西定律模块以及稀物质传递模块，通过自定义参数耦合和边界耦合的方式实现了多物理场的相互耦合作用。针对不同裂隙入口气压情况进行了数值模拟计算和分析，结果表明在裂隙壁附近应力过渡明显，渗透率变化显著，极易发生损伤破坏。研究发现模型中存在某一临界位置，在其两侧渗透率随入口压力的变化规律相反，即模型中距裂隙边界一定范围内的煤岩基质渗透率随入口压力的增大而逐渐减小，但在此范围外的煤岩基质渗透率随入口压力的增大反而逐渐增大 ... 詳細を見る

Black-oil simulators are commonly used in petroleum reservoir engineering for the prediction of oil production, especially during the earlier stages of oil-field exploitation, while also serving to guide pressure maintenance strategies in the longer term. Such models account for fluid ... 詳細を見る

This analysis evaluates the importance of the lateral component of flow on the infiltration of water from parallel strip sources of water on the soil surface. Flow from such sources will be two-dimensional, having both vertical and lateral components. Here we examine the effect of the ... 詳細を見る

Time-lapse electrical resistivity tomography (ERT) method provides a non-invasive way to monitor subtle sub-surface changes caused by water flow such as in an infiltration test. Problems arise when the inversion models contain artifacts due to measurement errors, rapid change in soil ... 詳細を見る

Electric, magnetic and electromagnetic (em) methods are widely used to monitor active volcanoes. A review of such applications is presented in Johnston (cit). Em signals were recorded in correspondence of numerous volcanic eruptions, for example in the case of the Mt. Unzen in Giapppone, ... 詳細を見る

A comprehensive three dimensional finite element thermal model has been developed using COMSOL Multiphysics® software to understand the thermo-physical behaviour of the uppermost regolith layer of the moon. The model can simulate variable layers, layer thickness and dimensions and can ... 詳細を見る