IBPSA1993

In this paper we elaborate on a general representation for robots in building construction, to simulate the robots' capabilities to operate within different building projects and in cooperation with human labor crews. We introduce motion rules as a way to capture the diversity in the different robot types in a uniform manner. We explore a motion language to model the behavior of robots in the real-world environment of building construction.

The simulation of temperature and pressure development in the ventilation systems of an offshore oil platform during the initial phase of afire has been carried out using the IDA solver (IDA 1991). This paper focuses on the utility shaft and its ventilation system. The simulations are part of a project for the Norwegian oil company Statoil. That project is a total analysis of the situations in case of afire, with the objectives to decide the strategies of smoke control during the early stage of the fire.

The Simulation Problem Analysis Research Kernel (SPARK) environment for simulation of nonlinear differential algebraic systems has been revised to improve modeling convenience, modeling flexibility, and solution efficiency. Solution efficiency has been enhanced by automatic decomposition of the problem into strongly connected components, characterized as separately solvable subproblems.

An overview of the principles used to develop productive interfaces is presented, and afresh approach to the design and use of Simulation Systems is suggested. The notion of "perspective" (a way of viewing the HumanComputer Interaction) is introduced and then extended with analogy. The aim is to encourage a complete exploration of the roles that users play when interacting with computer systems and to ensure that adequate user models and functionality are developed

The most effective way of establishing confidence in the ability of a simulation tool to model a particular component or system is to compare the predictions with measured data. These data can derive from experiments in test cells or monitored test buildings. In both cases, however, the performance cannot be directly translated to generalised conclusions because the conditions of the test are not representative of conditions within typical real buildings.

In this paper we present computational experiments on the efficiency of partitioning of domains on the speed of simulation runs with an object-based solver. This exercise is motivated by the emergence of object-based environments where models are encapsulated in objects and communicate with one another, thus yielding extremely modular simulations. Such an approach is convenient for the user. This article tries to determine whether it can be efficient. The case considered is the model problem in heat conduction on a square plate.

The heat conduction through the walls changes the heat load and its distribution in a room, and thus affects the air flow pattern in a buoyancy-controlled ventilated room. This paper presents a methodology of how conjugate heat transfer and air flow in a room can be handled in an efficient computational fluid dynamics (CFD) code. The wall and indoor air regions are simulated simultaneously. The standard k-e model is used for modelling the turbulence in rooms. The transport equations take the same form in both fluid (air) and solid (wall) regions.

This paper examines the application of simulation tools to daylighting and heating energy use in the context of what questions the designers wish to ask and what answers they seek. We describe a framework to provide an integrated simulation environment which the designer can use to pose such questions and receive the required answers. While the structure of the integration framework is similar to many comparable projects in the field of integrated environments, we concentrate on the methods required to provide tailorable user-interfaces to the base models.

The simulation of daylighting performance requires some knowledge about prevailing sky conditions, especially luminance. Commonly the CIE standard models (clear and overcast, and often some combination of both) are used to provide the necessary estimates to obtain the temporal and spatial variance of luminances and the consequent illuminance levels in buildings.

This paper describes the modelling and the experimental validation under ALLAN.TM Simulation software³ of a dwelling subjected to actual indoor and outdoor conditions. The construction of the global model is made in two steps: a downward analysis, by breaking up the system in elementary components; an upward synthesis, by assembling the elementary models into macro-models. Experimental data for the thermal behavior of the dwelling structure has been obtained at Gaz de France, Direction des Etudes et Techniques Nouvelles (St-Denis).