Simulation Analysis of Building Green Facade Eco-Effect

2014 ◽  
Vol 548-549 ◽  
pp. 1701-1705 ◽  
Author(s):  
Xin Chen Pan ◽  
Yi Xuan Xiao
Keyword(s):  
Simulation Analysis ◽  
Simulation Software ◽  
Indoor Temperature ◽  
Man And Nature ◽  
Annual Carbon ◽  
U Value ◽  
Green Façade ◽  
The Stability ◽  
Indoor Comfort ◽  
Green Facade

Purposes: this paper is to analyze and quantify the eco-effect of building green facade, providing a reliable application methods and theory basis for solving current environmental issues. Methods: this paper using facade renovation project of Wismar University in Germany as the carrier, it uses Energy-Plus energy simulation software, CFD computational fluid dynamics software and U-wert.net calculation software for U value of material to get the simulation analysis of the energy, physical and regional eco-effect of building green facade. Results: building green facade can increase 23.7% heat resistance value, save 6.2% of the year-round air conditioning load, reduce indoor temperature by 3-5°C in summer, reduce the air velocity by 0.03m/s, maintain the stability of indoor temperature, the annual indoor temperature can maintain 20.84°C, improve the indoor comfort. The temperature around the building can reduce by 0.5-4°C after green facade renovation, reduce the wind speed in the region by 0.05m/s, and reduce the annual carbon emission by 7.1%. Conclusions: Through the simulation results, eco-effect of building green facade play a significant role in cooling and insulation, energy saving, heat island mitigation, improving comfort, maintaining the balance of carbon and oxygen. It has become one important way to suture rift between man and nature in cities, being an effective way to solve today's ecological issues.

scholarly journals Thermal Impacts of Vertical Greenery Systems

2014 ◽  
Vol 14 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Tabassom Safikhani ◽  
Aminatuzuhariah Megat Abdullah ◽  
Dilshan Remaz Ossen ◽  
Mohammad Baharvand
Keyword(s):  
Thermal Performance ◽  
Modern Architecture ◽  
Small Scale ◽  
Heat Transmission ◽  
Indoor Temperature ◽  
Experimental Procedure ◽  
Hot And Humid Climates ◽  
Living Wall ◽  
Green Façade ◽  
Green Facade

Abstract - Using vertical greenery systems to reduce heat transmission is becoming more common in modern architecture. Vertical greenery systems are divided into two main categories; green facades and living walls. This study aims to examine the thermal performance of vertical greenery systems in hot and humid climates. An experimental procedure was used to measure indoor temperature and humidity. These parameters were also measured for the gap between the vertical greenery systems and wall surfaces. Three boxes were used as small-scale rooms. Two boxes were provided with either a living wall or a green facade and one box did not have any greenery (benchmark). Blue Trumpet Vine was used in the vertical greenery systems. The data were recorded over the course of three sunny days in April 2013. An analyses of the results showed that the living wall and green facade reduced indoor temperature up to 4.0 °C and 3.0 °C, respectively. The living wall and green facade also reduced cavity temperatures by 8.0 °C and 6.5 °C, respectively.

Green Façade (Vertical Greening): Benefits and Threats

2015 ◽  
Vol 747 ◽  
pp. 12-15 ◽  
Author(s):  
Mehdi Rakhshandehroo ◽  
Mohd Johari Mohd Yusof ◽  
Meysam Deghati Najd
Keyword(s):  
Urban Areas ◽  
Building Envelope ◽  
Environmental Benefits ◽  
Ecological Value ◽  
Environmental Preservation ◽  
Rooftop Garden ◽  
Green Façade ◽  
Vertical Greening ◽  
Indoor Comfort ◽  
Green Facade

In the challenge of development in dense urban areas and environmental preservation, sustainability is a significant requirement where green facade (vertical greening) is one of those approaches that flourished during the last decade although it is not a new concept. Hanging or vertical garden, vertical vegetable farms, balcony garden, container or planter box greening, green or eco building, green roof or rooftop garden, wall planter, and green envelop are all different aspects of this idea that demonstrate how wide this landscape can be. Greening the building envelope with vegetation can be used as a mean to restore the environmental conditions in dense urban areas. Designers can look for enhanced solutions where the façades are more than tinted glass barrier. Several researches have proven the environmental benefits of green facade on both new and existing buildings. They can be applied for mitigating the effect of urban heat island, increasing biodiversity and ecological value, insulating against environmental impact, outdoor and indoor comfort, social and psychological wellbeing and enhancement of air quality for city dwellers. This article discusses different systems of the green facade as a method of sustainable development.

Numerical Simulation Analysis of the Nanyangpo Coal Mine Anchor Support Method

2012 ◽  
Vol 619 ◽  
pp. 231-238
Author(s):  
Mei Chang Zhang ◽  
Peng Cheng Fei ◽  
De Long Zou
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Surrounding Rock ◽  
Nursing Program ◽  
Load Carrying ◽  
Deformation Law ◽  
The Stability ◽  
Surrounding Rock Deformation ◽  
Bolt Support

The bolt support is important to ensure the stability of surrounding rock. Of Nan Yangpo mines as the research background. The application of numerical simulation software FLAC3D mine deep Bolt bolt support after the surrounding rock deformation law of the numerical simulation, Comparison and analysis of rock displacement and plastic zone under the support program changes. The results show that, The third bolt support nursing program, Significantly improve the strength and load carrying capacity of the surrounding rock, Effectively control the damage of the deep tunnel deformation that can control the roof of 4101 the return airway and two to help the stability.

scholarly journals Grouting Reinforcement Mechanism and Multimodel Simulation Analysis of Longwall Goaf

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Xueliang Li ◽  
Xiaoli Guo ◽  
Guang Sun
Keyword(s):  
Simulation Analysis ◽  
Residual Deformation ◽  
Horizontal Stress ◽  
Simulation Software ◽  
Parameter Determination ◽  
Reinforcement Mechanism ◽  
Filling Materials ◽  
Grouting Reinforcement ◽  
The Stability ◽  
Scheme Selection

Grouting reinforcement is one of the most effective methods to enhance the stability of the goaf, and its scheme selection, hole location, and parameter determination directly affect the success or failure of goaf treatment. On the basis of discussion of the deformation mechanism and evolution law of the longwall goaf, this article comprehensively analyzed the grouting reinforcement mechanism of the goaf combined with filling theory, permeability theory, and fracturing theory and studied the physical and chemical reaction principles of two commonly used filling materials, cement-fly ash slurry and cement-clay slurry. Three grouting models have been established: whole grouting, local grouting in fracture zone, and strip grouting, and then simulated the grouting effect of the two more common methods of whole grouting and strip grouting by numerical simulation software (FLAC3D, tecplot, Surfer). Simulation analysis is carried out from the perspectives of settlement deformation, horizontal movement, vertical stress, and horizontal stress. Finally, the feasibility of grouting treatment in the goaf is verified by engineering example. The results show that a reasonable grouting scheme can effectively reduce the residual deformation of the goaf and its overlying rock and improve the poor stress state, so as to achieve the purpose of effective grouting.

scholarly journals The projected deposition and removal of particulate matter by green façade drapes: a case study at SAINTGITS.

2020 ◽  
Vol 489 ◽  
pp. 012034
Author(s):  
Sajan Thomas ◽  
Joselin Herbert ◽  
Jacob Thottathil Varghese ◽  
C.R.K Sathish ◽  
Abdul Quadir ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Green Façade ◽  
Green Facade

scholarly journals Study on instability failure mode and monitoring early warning standard of surrounding rock in fully weathered argillaceous sandstone section of large section tunnel

2019 ◽  
Vol 136 ◽  
pp. 04023
Author(s):  
Ming Zhao ◽  
Ke Li ◽  
Hong Yan Guo ◽  
KaiCheng Hua
Keyword(s):  
Limit State ◽  
Stable State ◽  
Simulation Software ◽  
Surrounding Rock ◽  
Large Section ◽  
Rock Stability ◽  
Geological Conditions ◽  
Construction Step ◽  
The Face ◽  
The Stability

Based on the special geological conditions of a tunnel in Qingyuan section of Huizhou-Zhanzhou Expressway, FLAC3d numerical simulation software is used to simulate the rheological properties and instability of surrounding rock in large-section fully weathered sandstone section, and the stability and loss of surrounding rock are analyzed. The deformation of the dome and the face at steady state is analyzed. It is found that: 1) when the surrounding rock is in a stable state, the deformation curve of the dome is smooth. When the surrounding rock of the face is unstable, the front of the face appears ahead. Deformation should be first strengthened on the surrounding rock in front of the face. 2) The arched foot is an important part of the instability of the surrounding rock. In order to prevent the expansion of the collapsed part, the arched part should be reinforced. 3) In order to obtain the limit state of surrounding rock stability, the strength of surrounding rock is reduced, and the strength reduction coefficient corresponding to the displacement sudden point is taken as the safety factor of rock stability around the hole, and the stability safety coefficients of surrounding rock of each construction step are greater than 1.2. 4) The dynamic standard values of deformation control in the whole construction stage are obtained by analyzing the deformation curves of each data monitoring point with time in the corresponding time period of each construction step.

The Research of Marine Nuclear Power Two Loop Simulation Software Based on the Thermal System Analysis

2014 ◽  
Vol 983 ◽  
pp. 288-291
Author(s):  
Guo Lei Zhang ◽  
Xiang Dong Jin ◽  
Zhan Zhao ◽  
Zhi Jun Shi
Keyword(s):  
Nuclear Power ◽  
System Analysis ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Operating Conditions ◽  
Two Phase ◽  
Design Data ◽  
Software Optimization ◽  
Power Simulation ◽  
Basic Functions

To study of Nuclear power simulation software's basic functions and mathematical model based on thermal analysis. Describes the two-phase flow model of GSE software superiority, as well as the software optimization program .Use of software tools for normal operating conditions of the simulation calculation and analysis of the results. Comparison with design data shows that,the software use in marine nuclear power two loop system simulation analysis field, the accuracy of it is higher.

scholarly journals Numerical Simulation on Large Deformation of Weak Rock Mass Tunnel Under High Geostress

2018 ◽  
Vol 175 ◽  
pp. 03025
Author(s):  
Feng Zhou ◽  
Hongjian Jiang ◽  
Xiaorui Wang
Keyword(s):  
Rock Mass ◽  
Large Deformation ◽  
Lateral Pressure ◽  
Simulation Analysis ◽  
Pressure Coefficient ◽  
Surrounding Rock ◽  
Analog Simulation ◽  
Lateral Pressure Coefficient ◽  
High Geostress ◽  
The Stability

The problem about the stability of tunnel surrounding rock is always an important research object of geotechnical engineering, and the right or wrong of the result from stability analysis on surrounding rock is related to success or failure of an underground project. In order to study the deformation rules of weak surrounding rock along with lateral pressure coefficient and burying depth varying under high geostress and discuss the dynamic variation trend of surrounding rock, the paper based on the application of finite difference software of FLAC3D, which can describe large deformation character of rock mass, analog simulation analysis of surrounding rock typical section of the class II was proceeded. Some conclusions were drawn as follows: (1) when burying depth is invariable, the displacements of tunnel surrounding rock have a trend of increasing first and then decreasing along with increasing of lateral pressure coefficient. The floor heave is the most sensitive to change of lateral pressure coefficient. The horizontal convergence takes second place. The vault subsidence is feeblish to change of lateral pressure coefficient. (2) The displacements of tunnel surrounding rock have some extend increase along with increasing of burying depth. The research conclusions are very effective in analyzing the stability of surrounding rock of Yunling tunnel. These are going to be a reference to tunnel supporting design and construction.

Numerical Simulation Analysis of Smoke Control and Flow for Large Building Fire

2014 ◽  
Vol 608-609 ◽  
pp. 61-65
Author(s):  
Da You ◽  
Xiao Zhi Wang ◽  
Wen Jiang Chen ◽  
Gui Xiang Wu
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Double Precision ◽  
Actual Situation ◽  
Smoke Control ◽  
Fire Temperature ◽  
Building Fire ◽  
Engineering Software ◽  
Large Building

In fluid numerical simulation calculation, FLUENT is one of the most commonly used engineering software. By the way of pressure velocity coupling, FLUENT can solve the flow field, and use the finite volume method to speed up the convergence. In order to improve the calculation accuracy, FLUENT is divided into single precision and double precision to meet the need of practical engineering. In this paper, by using FLUENT numerical simulation software, combined with UDF programming, we analyze the temperature and smoke distribution when large building fire occurs. The GAMBIT software is used for the numerical modeling, and we use Tecplot software to carry out the post processing of results. Through numerical simulation, the fire temperature value reaches 1050K without wind, while with wind the temperature is 1030K, , which is consistent with the actual situation. In the absence of ventilation condition, concentration is 0.0112; under the condition of ventilation concentration is 0.0052, which is consistent with the actual situation. Therefore in the building fire safety, the first thing to consider is ventilation, which can reduce the fire temperature and concentration and security personnel safe evacuation.

The Optimal Control of Vehicle`s Steering and Braking System

2013 ◽  
Vol 473 ◽  
pp. 243-246
Author(s):  
Guo Li ◽  
Cheng Yao Jia ◽  
Wen Zheng Zhang
Keyword(s):  
Neural Network ◽  
Fuzzy Neural Network ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Braking System ◽  
Simulink Simulation ◽  
Neural Network Controller ◽  
Network Controller ◽  
Fuzzy Neural ◽  
The Membership Function

In order to make a research on the vehicle`s ABS and AFS system,the fuzzy neural network controller was designed on the basis of the electric vehicle`s steering and braking models. Then the genetic algorithms was used to improve the parameters of the membership function. Finally, the Matlab/Simulink simulation software has been used in the simulation analysis. The result of simulation proves that the designed system has good tracking performance and more stronger systemic robustness .

Sign in / Sign up

Export Citation Format

Share Document