The Study of Building Indoor and Outdoor Wind Environment

2012 ◽  
Vol 482-484 ◽  
pp. 2592-2595 ◽  
Author(s):  
Zhong Hua Tang ◽  
Ri Chao Liu ◽  
De Bao Lei
Keyword(s):  
Numerical Simulation ◽  
Wind Field ◽  
Indoor Environment ◽  
Natural Ventilation ◽  
High Quality ◽  
Wind Environment ◽  
Building Height ◽  
Building Layout ◽  
Indoor And Outdoor

Through FLUENT numerical simulation, this paper is aimed on studying the influence of outdoor wind environment on indoor environment. We found that building height, building layout format and opening format in the wall are significant impacted on indoor natural ventilation. At the three-fourth height of building, if the building layout and housing opening is stagger, it can get high-quality indoor natural ventilation and more evenly indoor wind field.

scholarly journals Group Layout Pattern and Outdoor Wind Environment of Enclosed Office Buildings in Hangzhou

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 406 ◽  
Author(s):  
Xiaoyu Ying ◽  
Yanling Wang ◽  
Wenzhe Li ◽  
Ziqiao Liu ◽  
Grace Ding
Keyword(s):  
Natural Ventilation ◽  
Cfd Simulation ◽  
Simulation Software ◽  
Office Building ◽  
Wind Environment ◽  
Site Model ◽  
Advantages And Disadvantages ◽  
Building Layout ◽  
Ventilation Performance ◽  
Group Layout

This paper presents a study of the effects of wind-induced airflow through the urban built layout pattern using statistical analysis. This study investigates the association between typically enclosed office building layout patterns and the wind environment. First of all, this study establishes an ideal site model of 200 m × 200 m and obtains four typical multi-story enclosed office building group layouts, namely the multi-yard parallel opening, the multi-yard returning shape opening, the overall courtyard parallel opening, and the overall courtyard returning shape opening. Then, the natural ventilation performance of different building morphologies is further evaluated via the computational fluid dynamics (CFD) simulation software Phoenics. This study compares wind speed distribution at an outdoor pedestrian height (1.5 m). Finally, the natural ventilation performance corresponding to the four layout forms is obtained, which showed that the outdoor wind environment of the multi-yard type is more comfortable than the overall courtyard type, and the degree of enclosure of the building group is related to the advantages and disadvantages of the outdoor wind environment. The quantitative relevance between building layout and wind environment is examined, according to which the results of an ameliorated layout proposal are presented and assessed by Phoenics. This research could provide a method to create a livable urban wind environment.

Numerical Simulation of Campus Wind Environment

2010 ◽  
Vol 160-162 ◽  
pp. 280-286
Author(s):  
Ri Chao Liu ◽  
Zhong Hua Tang ◽  
Wei Yang Qi
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Wind Direction ◽  
Natural Ventilation ◽  
Pressure Field ◽  
Field Analysis ◽  
Wind Environment ◽  
Computational Fluid Dynamics Cfd ◽  
Cfd Method ◽  
Rng Turbulence Model

This paper adopted computational fluid dynamics (CFD) method, used k-ε RNG turbulence model-closed control differential equations for numerical simulation. Through numerical simulation and analysis of wind environment in a middle school campus, the round wind field under dominant wind direction was got in the summer and winter. According to the results of velocity field and pressure field, analysis the wind environment, compared the influence of wind direction and surrounding buildings space to the natural ventilation, provided guidance introduce for the layout of the school.

Thermo-Aeraulic Simulation of Mono Façade Natural Ventilation

2017 ◽  
Vol 21 ◽  
pp. 514-519
Author(s):  
Mircea Horne Horneț ◽  
Raluca Dania Todor ◽  
Nicolae Fani Iordan ◽  
Mircea Drăghici ◽  
Cristian Năstac ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Indoor Environment ◽  
Natural Ventilation ◽  
Energy Use ◽  
Thermal Response ◽  
Wind Pressure ◽  
Physical Processes ◽  
Efficient Alternative ◽  
Ventilation Rates ◽  
Indoor And Outdoor

Natural ventilation is an energy efficient alternative for reducing the energy use in buildings, achieving thermal comfort and maintaining a healthy indoor environment. Differences in wind pressure along the façade and differences between indoor and outdoor temperatures create a natural air exchange between indoor and outdoor air. These physical processes are complex, and predicting ventilation rates is difficult. This paper presents a method for determining natural ventilation air flow in single-façade thermo-air system by simulating the room using the program TRNSYS 16. Theoretical checking of the airflow obtained by simulation was performed by comparing the thermal response in the room following the simulation, with interior temperatures measured during the experiment.

A Method for the Assessment of the Inhalation Dose Exposure to Radionuclides in an Indoor Environment

2013 ◽  
Vol 477-478 ◽  
pp. 412-422
Author(s):  
Xiao Feng Hu ◽  
Hong Huang ◽  
Shi Fei Shen ◽  
Hong Yong Yuan
Keyword(s):  
Wind Velocity ◽  
Urban Areas ◽  
Indoor Environment ◽  
Power Plants ◽  
Natural Ventilation ◽  
Wind Pressure ◽  
Inhalation Dose ◽  
Building Height ◽  
Ventilation Coefficient ◽  
Street Width

The radionuclides released from NPPs (Nuclear Power Plants) as a result of accidents will significantly affect human health by causing cancer, genetic diseases, or acute radiation sickness. To investigate and evaluate the influence of the airborne hazardous materials on human bodies in an indoor environment in urban areas near NPPs, it is necessary to calculate the inhalation dose. In this study, a method for the assessment of the inhalation dose of indoor radionuclides was proposed. This method consists of the combination of the basic equation of natural ventilation and the empirical equation for calculation of the inhalation dose. The method was applied in a modeled densely urban domain, and CFD simulations were conducted to obtain the wind pressure distribution on the building surfaces. Moreover, the impacts of certain important parameters, including the ventilation coefficient, the age group of humans, the wind velocity, the urban street width, and the building height, were discussed in this paper. The results show that all of these parameters affect the indoor inhalation dose. In most cases, the indoor dose obtained at the same floor was higher with a higher ventilation coefficient, breathing rate, wind velocity, and street width or a lower building height. Furthermore, people living in the middle floors will generally be exposed to a lower inhalation dose than those in other floors especially the top floor.

Research on the Indoor and Outdoor Wind Environment of University Apartment in the Hot in Summer and Cold in Winter Area

2013 ◽  
Vol 671-674 ◽  
pp. 2240-2244
Author(s):  
Xiang Duan ◽  
Wei Qi Xu ◽  
Ke Xin He
Keyword(s):  
Natural Ventilation ◽  
Simulation Analysis ◽  
Thermal Environment ◽  
High Humidity ◽  
Climatic Region ◽  
Meteorological Element ◽  
Wind Environment ◽  
Outdoor Thermal Environment ◽  
Natural Wind ◽  
Indoor And Outdoor

Wuhan,which is hot in summer and cold in winner climatic region,lies in the east of Jianghan Plain.High temperature and high humidity is characteristics of the city.Thus,it’s vital to strength the natural ventilation of building.Simulation for the situation of wind in Wuhan a certain university in this paper,which take average meteorological element for many years in Wuhan to be initial condition.Selecting Fluent Airpak to conduct flow field Simulation Analysis in the process of calculation.posing problem which exist natural ventilation design universally,according to experimental data,and give tactics to solve it,aiming at utilizing natural wind more effectively and more rationally,and creating comfortable indoor and outdoor thermal environment.

A Numerical Simulation of VOCs Distribution in Indoor Environment of a Dormitory

2014 ◽  
Vol 548-549 ◽  
pp. 650-654
Author(s):  
Sun Bin ◽  
Zhi Hui Yang
Keyword(s):  
Numerical Simulation ◽  
Indoor Environment ◽  
Natural Ventilation ◽  
Cfd Simulation ◽  
Exhaust System ◽  
Simulation Method ◽  
Pollutant Concentration ◽  
Detailed Result ◽  
Resource Location ◽  
Indoor Pollutant

This document utilizes CFD simulation method to confirm the distribution of a new dormitory under the condition of natural ventilation and get the visible result and analyses the result of simulation and monitor. Because of the sealing of the room is nice, the result of the simulation value well agree with the true monitor value. By use of CFD simulation method the detailed result of indoor velocity field and pollutant concentration can be get easily. This document provides a method and theory to do further research on indoor pollutant concentration of different conditions, such as different exhaust system, different exhaust volume and different pollutant resource location.

scholarly journals Study on Wind Environment Influencing Factors and Layout of Urban Ordinary Residence

2021 ◽  
Author(s):  
Xiang Chen ◽  
Xiang Duan
Keyword(s):  
Wind Speed ◽  
Environmental Impact ◽  
Wind Field ◽  
Architectural Design ◽  
Residential Area ◽  
Wind Pressure ◽  
Wind Environment ◽  
Planning And Design ◽  
Building Layout ◽  
Architectural Planning

In the architectural planning and design, the commonly used architectural layout forms are determinant, diagonal, etc. Because of its centralized and symmetrical layout form, determinant architecture has been widely used in urban architectural design. Due to the high density of multi span buildings, the ventilation effect is not good, so this paper mainly studies the influence of multi span building layout on the wind field of urban ordinary residence. In order to optimize the wind environment of the building, a 7-story residential area was modeled and calculated by CFD. Through the analysis of wind field characteristics at different building heights, the results show that the total wind speed in Z direction of the building is the smallest, about 3.354 m/s; At the same time, the overall wind pressure values are within 5Pa of the standard wind pressure difference, but we still need to pay close attention to the possible environmental impact at the outlet of the determinant residence.

Sign in / Sign up

Export Citation Format

Share Document