Articles techniques et présentations

我国南海地区常年高温高湿、雨量充沛、太阳辐照强度大，风速大且风中包含大量水汽，处于多强场耦合的热带海洋环境下，建筑围护结构承受着远高于大陆地区的热湿压力。尽管我国已开始对南海地区进行开发建设，但尚无相应的建筑热工设计指标体系进行指导，使得热工选材无据可依，围护结构设计有所失真。作为指标体系建立的重要基础研究工作，探究极端热湿气候下围护结构热湿耦合传递特点具有重要的科学价值和实际意义。本文针对南海地区建立了一维瞬态热湿耦合传递模型，利用Comsol数学模块系数型PDE接口进行了求解，探讨了热量传递、水分传输过程中相关参数的变化特点 ... En savoir plus

COMSOL Multiphysics software, when properly configured, can readily solve modeling problems in the laminar flow regime using the standard Navier-Stokes equations or in the fully turbulent flow regime using the kappa-epsilon model. Failure to solve a particular model is typically ... En savoir plus

Current trends of research aims at the reduction of conventional fossil fuel consumption so as to mitigate anthropogenic global warming and thus to combat with the climate change. This can be done by shifting to more efficient, alternate, non-conventional and environmental friendly ... En savoir plus

The most common method for in-situ recovery of oil sands is Steam Assisted Gravity Drainage (SAGD). SAGD is based on injecting pressurized steam into the ground to heat up the highly viscous bitumen and reduce its viscosity allowing oil to flow. This process is energy and emissions ... En savoir plus

Ground-coupled heat pumps (GCHP) are successfully installed since at about 20 years in many countries to fulfill space conditioning requirements in building applications. In most cases the heat pump is connected to a system of vertical ground heat exchangers (as illustrated in Figure 1) ... En savoir plus

The U.S. Naval Academy has used COMSOL as a research tool for many years. Academic usage of COMSOL for student use has only begun in the last five years. Student involvement comes in four types, course-wide usage, focused course related work, student projects and semester-long research ... En savoir plus

Polymer sheets are widely used for glazing and roofing structural applications. The primary design requirements of these polymeric sheets are to resist uniformly distributed wind loading. Conventional building materials such as steel and glass plates are relative stiffer compared to ... En savoir plus

We discuss the use of COMSOL Multiphysics 3.4 in the aerodynamic optimization process of the UNLV solarpowered UAV. We also address the use of COMSOL’s Multiphysics ability and how it was used within the scope of the project. In particular we highlight the development of wingtip devices, ... En savoir plus

Ground Heat Exchangers (GHXs) are rarely installed horizontally in linked ground source heat pumps used for space conditioning, because their energetic performance is lower than in the vertical solution. However, the horizontal one holds several advantages: it is easy to carry out and ... En savoir plus

This poster focuses on the development of practical acoustic metamaterials for the reduction of low frequency industrial noise. High noise levels generated by industrial machinery can cause major environmental problems and stakeholders are looking for novel solutions. Particular ... En savoir plus