scholarly journals DEVELOPMENT OF 24 HOURS COUPLED ANALYSIS OF HEAT BALANCE AND AIRFLOW USING BOTH NUMERICAL SIMULATION ON OUTDOOR THERMAL ENVIRONMENT AND CFD

2018 ◽  
Vol 24 (57) ◽  
pp. 715-719 ◽  
Author(s):  
Masahito TAKATA ◽  
Akira HOYANO ◽  
Takashi ASAWA
Keyword(s):  
Numerical Simulation ◽  
Heat Balance ◽  
Thermal Environment ◽  
Coupled Analysis ◽  
Outdoor Thermal Environment

scholarly journals Tourists’ Thermal Experience and Health in a Commercial Pedestrianized Block: A Case Study in a Hot and Humid Region of Southern China

2019 ◽  
Vol 16 (24) ◽  
pp. 5072 ◽  
Author(s):  
Lei Zhang ◽  
Xuan Ma ◽  
Jingyuan Zhao ◽  
Mengying Wang
Keyword(s):  
Numerical Simulation ◽  
Public Space ◽  
Field Measurement ◽  
Thermal Environment ◽  
Southern China ◽  
Tourism Industry ◽  
Outdoor Thermal Environment ◽  
Humid Region

With the development of the economy in China, the tourism industry has become a form of daily entertainment for citizens. Commercial pedestrianized blocks have been designed as recreational centers for tourists, serving as outdoor public space and scenic spots. The use of these regions is directly determined by the outdoor thermal environment. So far, few studies have been conducted on tourists’ thermal experience in commercial pedestrianized blocks, especially in the hot and humid region of southern China. Using field measurement and numerical simulation of a commercial pedestrianized block in Fo Shan, China, to research tourists’ thermal experience under different conditions, the final results of this study could help to select the most suitable time for tourist travel and help local managers to improve the thermal environment.

scholarly journals Improvement Strategies Study for Outdoor Wind Environment in a University in Beijing Based on CFD Simulation

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Xiaodan Li ◽  
Jing Wang ◽  
Mahroo Eftekhari ◽  
Qi Qi ◽  
Donglin Jiang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Cfd Simulation ◽  
Thermal Environment ◽  
Simulation Software ◽  
Wind Environment ◽  
Outdoor Thermal Environment ◽  
Overall Evaluation ◽  
Improvement Measures ◽  
Biological Environment ◽  
Building Form

The outdoor wind environment is one of the most important factors influencing the biological environment and human comfort. The campus of China University of Mining & Technology (Beijing) (CUMTB) is the case study for this research. PHOENICS simulation software was used to carry out a numerical simulation study of the outdoor wind environment. The pedestrian-level wind (PLW) environments for both winter and summer were investigated. Based on the numerical simulation results, the overall evaluation and subregional analysis of the campus’ current outdoor wind environment were carried out. Then, according to the results and problems of wind environment assessment, improvement measures and strategies of outdoor wind environment in universities are proposed from the aspects of campus planning, single building form, and greening configuration. The main goal is to further improve the outdoor space and environment of universities in Beijing and provide general guidelines to improve the quality of the universities’ wind environment effectively. The strategies can provide a reference for the same type of campus on wind environment renovation and improvement. This study can also provide data support and reference significance for outdoor thermal environment/pedestrian environment research.

Numerical Simulation on Cooling Effects of Greening for Alleviating Urban Heat Island Effect in North China

2014 ◽  
Vol 675-677 ◽  
pp. 1227-1233 ◽  
Author(s):  
Cheng Chen ◽  
Yu Yue ◽  
Wen Jiang
Keyword(s):  
Numerical Simulation ◽  
Computer Simulation ◽  
Urban Heat Island ◽  
North China ◽  
Thermal Environment ◽  
Heat Island ◽  
Island Effect ◽  
Outdoor Thermal Environment ◽  
Urban Heat ◽  
Cooling Effects

As the climate warming up, the effects of the urban heat island have been an insurmountable issue in the urban development. In this paper, taking Tianjin for example, the research combined computer simulation with on-site measurement to evaluate the effects of different greening ratios on outdoor thermal environment. Besides, the accuracy of the simulation model has been verified by calibration. Research results determined that the increase of the greening ratio in the existing environment could improve the outdoor thermal environment in summer. But the limitations of green cooling was also pointed out, namely that the air temperature would infinitely close to a certain value with further increasing greening ratio.

The Effect of Urban Design on Outdoor Thermal Environment in a Central Business District Area in Singapore

2014 ◽  
Vol 1073-1076 ◽  
pp. 1428-1432
Author(s):  
Wei Yang ◽  
Yao Lin Lin ◽  
Nyuk Hien Wong
Keyword(s):  
Numerical Simulation ◽  
Urban Design ◽  
Air Temperature ◽  
Thermal Environment ◽  
Central Business District ◽  
Width Ratio ◽  
Mean Radiant Temperature ◽  
Outdoor Thermal Environment ◽  
Business District ◽  
Radiant Temperature

Outdoor thermal environment in urban spaces is important for people to enjoy the urban environment. This paper investigated the effect of urban design on outdoor thermal environment in an urban street in the central business district in Singapore, focusing on street orientation and height-to-width ratio. The microclimatic parameters of different street design scenarios were determined by ENVI-met numerical simulation. Field measurement was conducted to validate the results from the numerical simulation and they were in good agreement. For different design scenarios, it is found that (1) The air temperature differences did not exceed 0.8°C; (2) The mean radiant temperature differences could exceed 40°C; (3) The maximum wind speed difference was 0.6 m/s; (4) No distinct relative humidity differences could be found. The results show that shading is the key strategy for improving outdoor thermal environment in Singapore because it leads to reduction on the air temperature and mean radiant temperature simultaneously. N-S orientated street had the best thermal environment condition.Outdoor thermal environment in urban spaces is important for people to enjoy the urban environment. This paper investigated the effect of urban design on outdoor thermal environment in an urban street in the central business district in Singapore, focusing on street orientation and height-to-width ratio. The microclimatic parameters of different street design scenarios were determined by ENVI-met numerical simulation. Field measurement was conducted to validate the results from the numerical simulation and they were in good agreement. For different design scenarios, it is found that (1) The air temperature differences did not exceed 0.8°C; (2) The mean radiant temperature differences could exceed 40°C; (3) The maximum wind speed difference was 0.6 m/s; (4) No distinct relative humidity differences could be found. The results show that shading is the key strategy for improving outdoor thermal environment in Singapore because it leads to reduction on the air temperature and mean radiant temperature simultaneously. N-S orientated street had the best thermal environment condition. Shading achieved by means of high aspect ratios can improve thermal environment at street level.

Numerical Simulation Studies of Plant Communities’ Effects on Outdoor Thermal Environment in Residential District

2012 ◽  
Vol 598 ◽  
pp. 255-259
Author(s):  
Bo Hong ◽  
Yong Jian Qu
Keyword(s):  
Numerical Simulation ◽  
Plant Communities ◽  
Thermal Environment ◽  
Cooling Effect ◽  
Sophora Japonica ◽  
Area Index ◽  
Outdoor Thermal Environment ◽  
Platanus Orientalis ◽  
Fast Development ◽  
Residential District

The outdoor thermal environment has been worsening in recent years due to urban heat-island phenomenon accompanying fast development of urbanization. Many researches have been conducted into the effects of plants on the outdoor thermal environment by field experiment or numerical simulation. However, the plant communities’ effect on outdoor thermal environment has not established by numerical simulation yet. In this paper, the effect of plant communities on outdoor thermal environment was analyzed by numerical simulation. Moreover, the relationship between plant communities and outdoor thermal environment was also studied. The conclusion could be drawn as follows: 1) Platanus orientalis Community, Sophora japonica Community and Magnolia denudate Community have more obvious cooling effect. The shrub communities had a worse cooling effect and the grass was the worst; 2) there was a trend of decline of cooling effect with the decrease of plant communities ’canopy closure and leaf area index.

A review on the significance and perspective of the numerical simulations of outdoor thermal environment

2021 ◽  
pp. 102971
Author(s):  
Cho Kwong Charlie Lam ◽  
Hyunjung Lee ◽  
Shing-Ru Yang ◽  
Sookuk Park
Keyword(s):  
Numerical Simulations ◽  
Thermal Environment ◽  
Outdoor Thermal Environment

scholarly journals Numerical simulation of thermal environment in 320,000 tons VLCC engine room

2021 ◽  
Vol 687 (1) ◽  
pp. 012106
Author(s):  
Anqi Niu ◽  
Mingxuan Guo ◽  
Jianli Wang ◽  
Meiqi Chen ◽  
Guoliang Jin ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Thermal Environment ◽  
Engine Room
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