Method for simulating indoor thermal environment by fluid mechanics

Abstract

The invention discloses a method for simulating indoor thermal environment by fluid mechanics. The method comprises the following steps of according to a design scheme, carrying out indoor CFD (computational fluid dynamics) simulation of the air distribution mode of an all-air system, namely an air opening, an airflow field and air age in the top of each layer; after analog computation, obtaining an indoor temperature field, a humidity field, a PMV value and a PPD value; respectively analyzing, comparing and evaluating to select an optimal mode; proposing a revision suggestion for an improperly-designed place; instructing the air conditioning engineering to be constructed. The method can simulate the real condition by the computer simulation of the fluid mechanics, the model and boundary condition is perfected to guarantee the simulation accuracy, the indoor environment situation under different boundary conditions can be comprehensively known, and a great quantity of additional information can be provided for the building design by the calculation of the fluid mechanics. In addition, the method conforms to the requirement on paying more attention to the environment protection and the population health day by day and emphasizing people first, and the method can be vigorously developed in the building design.

Description

technical field [0001] The invention belongs to the technical field of building indoor thermal environment research, in particular to a method for simulating indoor thermal environment by using fluid mechanics. Background technique [0002] The indoor thermal environment of atrium buildings has always been the focus of research by domestic and international designers. Due to the dual effects of "chimney effect" and "greenhouse effect", there are two main problems in the indoor thermal environment of atriums with large glass curtain walls or transparent roofs. Problems in aspects: first, the temperature in the upper part of the atrium is easy to be too high in summer, which affects the thermal comfort of the rooms adjacent to the atrium; second, when a fire occurs in the atrium, the fire will quickly and violently spread upwards under the action of heat pressure. The particularity of the atrium makes it difficult for traditional design methods to provide well-founded solution...

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for simulating the indoor thermal environment by using fluid mechanics, aiming to solve the problems of unrealistic simulation and experimental difficulties caused by the complexity of the actual object in the existing test of the indoor thermal environment of buildings. , It is impossible to study each parameter, the problem of high experimental cost and long cycle

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