基于ICEM建模Fluent数值模拟办公楼通风安全计

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摘要：自然通风是一种免费的资源。而自然通风分为两种方式流动：一种是室外风力所造成的风压；另一种是室内室外的空气温度差造成的热压。它们使空气产生流动，从而让办公室内外的空气进行交换。自然通风因为与外部保持通风从而保证办公室内获得新鲜空气。因为它是自然流动的，所以它对能源没有什么依赖并且还能节省机械通风时的设备运行费用和投资，因此这是一种经济环保的通风方法。43767

而随着科技的不断发展，人们在建筑室内环境中生活时间的比例已经达到了90%的地步。室内环境如何完善改进已成为当今越来越重要的课题之一，而室内通风是室内环境品质的一个重要的组成部分。本课题主要选择一个典型的现代办公室去研究办公室中的自然通风的室内通风状况。其中办公室内通风量被作为主要的研究方向。为了使工作环境保持良好完善。而一个良好完善的工作环境对人们的舒适度和工作效率产生一个有益效益。

本文采用ICEM软件对办公室进行建模，为了研究进风口合适的尺寸以及进风口合适的离地高度，本文对办公室的进风口进行了6种不同的设计，分别是3种不同的进风口尺寸和3种不同的进风口高度。通过对这些设计的对比，选出最完善的设计并结合实际工程需要，对存有问题提出建议与意见。

本次设计中，采用fluent对建模完成后的模型进行计算并得出结论。在设立边界条件时，考虑到进风口的风速的不确定性，本文对办公室的进风口（窗户）的风速进行实测，取测出数值的平均值，将其设定为办公室的进口风速。

首先，最好的通风设计是从气流从进风口经过大部分的办公室区域，最后从排风口排出，它在节能方面发挥了用处，能够使办公室内的人员得到充分的新风量，且在内部是没有漩涡与回流的，得到的室内通风设计方案的安全性将大大提高；最后，对于同一个模型，自然通风的形式，在满足国定标准的新风量时，选取最好的进风口位置来得出最大的通风量。

毕业论文关键字：自然通风；室内环境品质；室内通风；办公室；ICEM；

Based on the ICEM numerical simulation modeling Fluent office building ventilation safety design

Abstract:Natural ventilation is a free resource。The natural ventilation flow is pided into two ways: one is caused by the outdoor wind pressure;Another way is indoor and outdoor air temperature difference caused by hot pressing. They make the air flow, so that it can exchange the air in office inside and outside.Because of natural ventilation keep ventilated to external so it can get fresh air in the office.And it is a natural flow, so it does not depend on the energy and also save on mechanical ventilation equipment operation cost and investment, so it is a kind of economic and environmental ventilation method.

With the development of science and technology,the proportion of people living in the indoor environmental time has reached the point of 90%.How to improve the indoor environment has become one of the more and more important topic，and indoor ventilation is an important part of the indoor environmental quality.This topic mainly choose a modern office to research the indoor ventilation in office .The ventilation flow rate as the main research direction in the office to make the work environment in a good condition.And a good work environment can improve people's comfort and work efficiency.

This article uses the ICEM software modeling for office, in order to research into the right air inlet size and the right height above the floor.In this paper, there are 6 kinds of different design to the office of the air inlets, three different inlet size and three different inlet height.Through the comparison of these design, select the most perfect design and combined with the actual project need, and put forward some opinions and suggestions on the existing problems.