Vol1: Twenty eight papers from the twelventh AIVC Conference, titles as follows: “The Message of Annex 20: Air Flow Patterns within Buildings”; “Evaluation of Measured & Computer Test Case Results from Annex 20, SubTask 1”; “Models for the Pre
12th AIVC Conference - Ottawa, Canada - 24-27 September 1991
The 12th AIVC Conference - Air movement and ventilation control within buildings, was held in Ottawa, Canada, 24-27 September 1991.
Contains 88 papers.
12th AIVC Conference "Air Movement and Ventilation Control within Buildings" (Book of Proceedings) | 1991 | English
Numerical modeling is performed to predict airflow patterns, thermal comfort, and ventilation air distribution within an open office space.
The evaluation of a code can be done by investigating two items: solving the correct equations and solving equations correctly and eficiently. An indoor airflow code VentAirI has been developed and is evaluated here.
Theoretical and experimental analysis of different ventilation strategies in a test room. | 1991 | English
The paper presents an original computer code for the analysis of contaminant diffusion in rooms developed at the Politecnico di Torino and its experimental validation by means of a test facility located at the University of Basilicata (Potenza).
Numerical investigation of transient flow over a backward facing step using a low Reynolds number k-e model. | 1991 | English
Recent full scale experiments has detected the presence of low Reynolds number effects in the flow in a ventilated room.
Thermal coupling of leakage air flows and heating load in building components and buildings. | 1991 | English
Simulation models basing on 2-dimensional finite-difference approach were developed for the steady-state and dynamic analyses of the thermal coupling of leakage airflows and building components.
Using thermofoil heaters for the experimental determination of the air flow patterns in a room. | 1991 | English
A new simple method is proposed here for the experimental singling out of the air flow patterns in a room.
Numerical prediction of airflow patterns and ventilation effectiveness in an open office environment. | 1991 | English
Numerical modelling is performed to predict air movement, thermal comfort level and contamination distribution within an open office space.
Thermal plumes in ventilated rooms - vertical volume flux influenced by enclosing walls. | 1991 | English
The flow rate in thermal plumes are influenced by many factors. Influence by enclosing walls is one of them.
Sandberg and Skaret differentiate between the terms air change efficiency and ventilation effectiveness.
Influence of radiative participation of inside air on natural convection in a room. | 1991 | English
The basis of this study are experimental results obtained on a real scale cell in controlled climatic conditions which are used to show the potential influence of radiative participation of inside air on natural convection in a room.
The airflow pattern and thermal comfort in a naturally ventilated classroom were predicted using CFD techniques.
As part of the AIVC's technical programme, study has been performed on present and advanced ventilation systems.
An integral mass balance formulation of the constant concentration tracer technique. | 1991 | English
This paper extends the integral mass balance approach to the remaining constant concentration technique.
Building design assessment through coupled heat and air flow simulation: two case studies. | 1991 | English
This paper is concerned with the application of air flow simulation in design.
Turbulent modelling of airflow patterns and ventilation effectiveness in a half scale office building. | 1991 | English
The concentrations of indoor pollutants should be maintained below recommended values at all occupied locations at any time.
Reverberant sound excitation and the sound intensity technique have been used for the measurement of the sound transmission loss of narrow slits in rigid walls.
The paper discusses methods to set boundary conditions at the air supply opening in predictions of room air flows with computational fluid dynamics.
Simultaneous calculation of airflows, temperatures and contaminant concentrations in multi-zone buildings. | 1991 | English
The computer programs published so far have enabled the calculation of airflows at constant temperatures or of air temperatures at constant airflows.
Application of hot wirelfilm ariemometry in room air flows presents difficulties because: (1) the effect of natural convection due to the heated wire beconies significant for low air velocity measurements; (2) the angle sensitivity of a hot wire b