AIVC - Air Infiltration and Ventilation Centre

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computational fluid dynamics

CFD Simulation of Air Distribution in Displacement Ventilated Rooms with a Moving Object

Numerical experiments by computational fluid dynamics (CFD) simulation were done toinvestigate air distribution in displacement ventilated rooms with a moving person, which affects thermal stratification of indoor air required for controlling and maintaining good air quality and high efficient ventilation performance. The distributions of indoor air and ventilation effectiveness obtained by the simulation were compared with the experiments using a full-scale room model.

Prediction of Indoor Thermal Comfort in Vehicle by a Numerical Thermoregulation Model and CFD

Numerical prediction method in vehicle by using a thermoregulation model and CFD is described here. To achieve energy efficient car, not only improving efficiency of components like engineand compressor, but also reduction of cooling and heating load are very efficient. In this paper component to evaluate indoor thermal environment like automobile is described on recent our research results. All latest components are not combined yet perfectly. However, a thermoregulation model (65MN) combined with radiation exchange model and Computational Fluid Dynamics is mentioned.

Critical analysis of contaminant removal efficiency assessment in a ventilated room

This study presents a critical analysis of assessment of ventilation systems effectiveness in terms of contaminant removal. For this purpose, experimental measurements are carried in a room of an experimental house called MARIA. Various ventilation scenarios are handled. The ventilated room is also equipped with a pine wood floor which emits several Volatile Organic Compounds which are considered as air pollutants here. Thereafter, based on boundary conditions given by measurements, Computational Fluid Dynamics (CFD) simulations are performed.

Interactive indoor air flow analysis using high performance computing and virtual reality techniques

In this article a prototype application of an interactive CFD-based computational steering system is presented, connecting a high performance computer (HPC) with a Virtual Reality (VR) environment. During the preliminary investigation of indoor air flow phenomena the user is able to interact on line, e.g. by modifying the geometry of the simulation scenario during the simulation itself. To allow for a comfortable analysis of complex fluid flow configurations a VR system consisting of a stereoscopic projection unit and a wand device is supported.

Indoor Air Climatic Design of the Tombs of Valley of Kings

Airflow characteristics in ventilated and air-conditioned spaces play an important role to attain comfort and hygiene conditions. This paper utilizes a 3D Computational Fluid Dynamics (CFD) model to assess the airflow characteristics in ventilated and air-conditioned archeological tombs of Egyptian Kings in the Valley of the Kings in Luxor, Egypt.

Analysis and design of micro-climate around the human body with respiration by CFD

This paper first describes the analysis results of flow and temperature fields around the human body.Thanks to various examples, it is made clear that CFD has developed into a very effective and powerful tool for analysis and design of healthy indoor environments.

Computational fluid dynamics and room air movement

This paper analyses the quality level of CFD, different aspects of the boundary conditions of supply openings are considered allong with the prediction of wall jets by different turbulence models.

Relative humidity analysis, retrofitting the Sint-Pieterschurch in Ghent

The Sint-Pieterschurch in the city of Ghent is one of the largest churches of the city. It was built in the 17th century. The city council wants to use the church not only for its religious functions, but also for cultural activities as concerts and exhibitions. To be able to do this the thermal comfort of the visitors has to be guaranteed. At this moment the church has no central heating system. Gas heaters are used during services. Installing a central heating system will influence the humidity and moisture behaviour of the church.

Numerical and experimental device for local control of ventilation

Local control of ventilation in large buildings is considered to be a main issue in energy savings regarding the huge energy losses that are usually induced by such large volumes. An efficient ventilation system and the development of local control ventilation strategies could prevent large buildings from having an unsuited or overvalued ventilation and reduce significantly the energy consumption.

Experimental and numerical studies on indoor air quality in a real environment

This paper deals with the relevance of Computational Fluids Dynamics (CFD) results confronted tomeasurements carried out under uncontrolled thermal conditions. Experimental tests have been undertaken in a room and in a kitchen of an experimental house. Although the wall surface temperatures and the air intake temperature have not been imposed, the air change rates have been controlled during the measurements. Moreover, since measurements have been carried out in a real environment, air leakage has occurred at the walls.