A CFD Simulation of Indoor Natural Ventilation of a Residential District in Zhuzhou

2014 ◽  
Vol 580-583 ◽  
pp. 2447-2451
Author(s):  
Zhi Yong Wang ◽  
Shun Fu Yang ◽  
Chang Rong Liu ◽  
Tian Yu Zhang ◽  
Na Cui
Keyword(s):  
Architectural Design ◽  
Natural Ventilation ◽  
Cfd Simulation ◽  
Rapid Development ◽  
Simulation Method ◽  
Building Energy ◽  
Residential Areas ◽  
Ansys Fluent ◽  
Residential District ◽  
House Design

With the promotion of building energy conservation, many residential areas are closely link with energy saving in design phase, and natural ventilation becomes the key to reduce building energy consumption. Thus, house design and building distribution of residential district is particularly important. Computational fluid dynamics (CFD) get rapid development in recent 20 years, especially in architectural design. This text established a model of part of a residential district in Zhuzhou based upon ANSYS FLUENT CFD software, and used numerical simulation method to simulate the condition of indoor natural ventilation under typical summer climate when the doors and windows of buildings were opened. The distribution regularities of indoor velocity field and pressure field and etc have been gotten. These data provide a theoretical basis to evaluate the building distribution of residential area.

Analysis and Research of Wind Environment of Energy Saving Buildings

2011 ◽  
Vol 243-249 ◽  
pp. 6246-6254
Author(s):  
Qian Feng
Keyword(s):  
Energy Efficiency ◽  
Architectural Design ◽  
Natural Ventilation ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Environment Design ◽  
Wind Environment ◽  
Indoor Space ◽  
Traditional Research ◽  
Tongji University

Building Energy Efficiency is one of the most important goals for green architectural design. Natural ventilation is a building energy efficiency technique adapting to the environment. Compared with air conditioning, natural ventilation can reduce the energy consumption and bring new air to indoor space. However, air environment, as an important aspect of building optimal design, can be ignored easily in traditional research, the quantitative analysis aiming at the energy efficiency of natural ventilation is less. In this paper, we use Fluent Air-pak software and Wenyuan Building of TongJi University as an example, to analyze the air flow field of indoor natural ventilation and provide the method and theory of air-environment design.

scholarly journals Optimization of Window Positions for Wind-Driven Natural Ventilation Performance

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2464
Author(s):  
Nari Yoon ◽  
Mary Ann Piette ◽  
Jung Min Han ◽  
Wentao Wu ◽  
Ali Malkawi
Keyword(s):  
Architectural Design ◽  
Natural Ventilation ◽  
Cfd Simulation ◽  
Design Decision ◽  
Building Facades ◽  
Window Position ◽  
Computational Fluid Dynamics Cfd ◽  
Ventilation Performance ◽  
Energy Simulations ◽  
The Impact

This paper optimizes opening positions on building facades to maximize the natural ventilation’s potential for ventilation and cooling purposes. The paper demonstrates how to apply computational fluid dynamics (CFD) simulation results to architectural design processes, and how the CFD-driven decisions impact ventilation and cooling: (1) background: A CFD helps predict the natural ventilation’s potential, the integration of CFD results into design decision-making has not been actively practiced; (2) methods: Pressure data on building facades were obtained from CFD simulations and mapped into the 3D modeling environment, which were then used to identify optimal positions of two openings of a zone. The effect of the selected opening positions was validated with building energy simulations; (3) results: The cross-comparison study of different window positions based on different geographical locations quantified the impact on natural ventilation effectiveness; and (4) conclusions: The optimized window position was shown to be effective, and some optimal solutions contradicted the typical cross-ventilation strategy.

Yunan Typical Courtyard Type Wind Environmental Analysis - Zhu Zigui Courtyard, for Example

2014 ◽  
Vol 641-642 ◽  
pp. 1117-1120
Author(s):  
Yan Shi ◽  
Ying Fan
Keyword(s):  
Energy Efficient ◽  
Architectural Design ◽  
Natural Ventilation ◽  
Ventilation Mode ◽  
Cold Winter ◽  
Residential Areas ◽  
Wind Environment ◽  
Winter Climate ◽  
Reducing Energy

Use natural ventilation in buildings is one of the most important energy-saving means of reducing energy consumption. Natural ventilation is use of pressure or heat to achieve natural ventilation effect, has the advantages of energy-efficient, clean, and is a relatively healthy ventilation mode. This study on wind environment in residential areas of Henan base, exploring hot-summer and cold-winter climate on buildings build the role of development, climate influence architectural design concept.

The Investigation of the Design of Natural Ventilation in Croquet Stadium Haicang Sports Center

2015 ◽  
Vol 744-746 ◽  
pp. 2328-2331
Author(s):  
Yu Ming Xiang ◽  
Jing Quan Guo
Keyword(s):  
Energy Conservation ◽  
Energy Saving ◽  
Architectural Design ◽  
Natural Ventilation ◽  
Building Energy ◽  
Design Practice ◽  
Technology Design ◽  
Building Energy Conservation ◽  
Applied Technology ◽  
Designing Method

This essay uses Croquet stadium in Haicang Sports Center as an example of the hot summer and warm winter architecture of passive energy conservation, analyzes and summarizes design philosophy, applied technology, design practice and energy saving effects. This essay also investigates utilizing the passive architectural design of low technology from designing method to achieve the purpose of building energy conservation.

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 The study of the numerical diffusion in computational calculation

2020 ◽  
Vol 310 ◽  
pp. 00039
Author(s):  
Kamila Kotrasova ◽  
Vladimira Michalcova
Keyword(s):  
Heat Transfer ◽  
Differential Equation ◽  
Numerical Simulation ◽  
Continuity Equation ◽  
Cfd Simulation ◽  
Flow Process ◽  
Ansys Fluent ◽  
Numerical Diffusion ◽  
Mesh Density ◽  
Computational Calculation

The numerical simulation of flow process and heat transfer phenomena demands the solution of continuous differential equation and energy-conservation equations coupled with the continuity equation. The choosing of computation parameters in numerical simulation of computation domain have influence on accuracy of obtained results. The choose parameters, as mesh density, mesh type and computation procedures, for the numerical diffusion of computation domain were analysed and compared. The CFD simulation in ANSYS – Fluent was used for numerical simulation of 3D stational temperature flow of the computation domain.

Research on CFD Simulation of the Cement Slurry Mixer

2012 ◽  
Vol 621 ◽  
pp. 196-199
Author(s):  
Shui Ping LI ◽  
Ya Li Yuan ◽  
Lu Gang Shi
Keyword(s):  
Flow Field ◽  
High Performance ◽  
Cfd Simulation ◽  
Structural Parameters ◽  
Internal Flow ◽  
Simulation Method ◽  
Cement Slurry ◽  
Fluid Machinery ◽  
Computational Fluid Dynamics Cfd ◽  
Machinery Design

Numerical simulation method of the internal flow field of fluid machinery has become an important technology in the study of fluid machinery design. In order to obtain a high-performance cement slurry mixer, computational fluid dynamics (CFD) techniques are used to simulate the flow field in the mixer, and the simulation results are studied. According to the analysis results, the structural parameters of the mixer are modified. The results show the mixer under the revised parameters meet the design requirements well. So CFD analysis method can shorten design period and provide valuable theoretical guidance for the design of fluid machinery.

A Verification and Validation Study of CFD Simulation of Wind-Induced Ventilation on Building with Single-Sided Opening

2014 ◽  
Vol 554 ◽  
pp. 696-700 ◽  
Author(s):  
Nur Farhana Mohamad Kasim ◽  
Sheikh Ahmad Zaki ◽  
Mohamed Sukri Mat Ali ◽  
Ahmad Faiz Mohammad ◽  
Azli Abd Razak
Keyword(s):  
Open Source Software ◽  
Natural Ventilation ◽  
Cfd Simulation ◽  
Previous Experiment ◽  
Experimental Methods ◽  
Verification And Validation ◽  
Navier Stokes ◽  
Navier Stokes Equation ◽  
Computational Fluid Dynamics Cfd ◽  
Model Approach

Wind-induced ventilation is widely acknowledged as one of the best approaches for inducing natural ventilation. Computational fluid dynamics (CFD) technique is gaining popularity among researchers as an alternative for experimental methods to investigate the behavior of wind-driven ventilation in building. In this present paper, Reynolds averaged Navier-Stokes equation (RANS) k-ε model approach is considered to simulate the airflow on a simplified cubic building with an opening on a single façade. Preliminary simulation using models from previous experiment indicates the reliability of OpenFOAM, the open source software that will be used in this study. The results obtained in this study will better define options for our future study which aims to explore how different buildings arrays modify the airflow inside and around a naturally ventilated building.

Numerical study of the aerodynamic and power characteristics of the cycloidal rotor, under incoming flow

2019 ◽  
pp. 25-34
Author(s):  
Александр Анатольевич Дектерев ◽  
Артем Александрович Дектерев ◽  
Юрий Николаевич Горюнов
Keyword(s):  
Flow Velocity ◽  
Numerical Study ◽  
Lift Coefficient ◽  
Simulation Method ◽  
Aerodynamic Characteristics ◽  
Incoming Flow ◽  
Ansys Fluent ◽  
Energy Characteristics ◽  
Power Characteristics ◽  
Calculation Results

Исследование направлено на разработку и апробацию методики численного моделирования аэродинамических и энергетических характеристик циклоидального ротора. За основу взята конфигурация ротора IAT21 L3. Для нее с использованием CFD-пакета ANSYS Fluent построена математическая модель и выполнен расчет. Проанализировано влияние скорости набегающего потока воздуха на движущийся ротор. Математическая модель и полученные результаты исследования могут быть использованы при создании летательных аппаратов с движителями роторного типа. This article addresses the study of the aerodynamic and energy characteristics of a cycloidal rotor subject to the influence of the incoming flow. Cycloidal rotor is one of the perspective devices that provide movement of aircrafts. Despite the fact that the concept of a cycloidal rotor arose in the early twentieth century, the model of a full-scale aircraft has not been yet realized. Foreign scientists have developed models of aircraft ranging in weight from 0.06 to 100 kg. The method of numerical calculation of the cycloidal rotor from the article [1] is considered and realized in this study. The purpose of study was the development and testing of a numerical simulation method for the cycloidal rotor and study aerodynamic and energy characteristics of the rotor in the hovering mode and under the influence of the oncoming flow. The aerodynamic and energy characteristics of the cycloidal rotor, rotating at a speed of 1000 rpm with incoming flow on it with velocities of 20-80 km/h, were calculated. The calculation results showed a directly proportional increase of thrust with an increase of the incoming on the rotor flow velocity, but the power consumed by the rotor was also increased. Increase of the incoming flow velocity leads to the proportional increasing of the lift coefficient and the coefficient of drag. Up to a speed of 80 km/h, an increase in thrust and power is observed; at higher speeds, there is a predominance of nonstationary effects and difficulties in estimating the aerodynamic characteristics of the rotor. In the future, it is planned to consider the 3D formulation of the problem combined with possibility of the flow coming from other sides.

Building pose estimation from the perspective of UAVs based on CNNs

2021 ◽  
pp. 2150003
Author(s):  
Zhenni Wu ◽  
Hengxin Chen ◽  
Bin Fang ◽  
Zihao Li ◽  
Xinrun Chen
Keyword(s):  
Neural Network ◽  
Pose Estimation ◽  
Computer Technology ◽  
Architectural Design ◽  
Rapid Development ◽  
Angle Error ◽  
Building Model ◽  
Building Models ◽  
World Coordinate System ◽  
Aerial Vehicle

With the rapid development of computer technology, building pose estimation combined with Augmented Reality (AR) can play a crucial role in the field of urban planning and architectural design. For example, a virtual building model can be placed into a realistic scenario acquired by a Unmanned Aerial Vehicle (UAV) to visually observe whether the building can integrate well with its surroundings, thus optimizing the design of the building. In the work, we contribute a building dataset for pose estimation named BD3D. To obtain accurate building pose, we use a physical camera which can simulate realistic cameras in Unity3D to simulate UAVs perspective and use virtual building models as objects. We propose a novel neural network that combines MultiBin module with PoseNet architecture to estimate the building pose. Sometimes, the building is symmetry and ambiguity causes its different surfaces to have similar features, making it difficult for CNNs to learn the differential features between the different surfaces. We propose a generalized world coordinate system repositioning strategy to deal with it. We evaluate our network with the strategy on BD3D, and the angle error is reduced to [Formula: see text] from [Formula: see text]. Code and dataset have been made available at: https://github.com/JellyFive/Building-pose-estimation-from-the-perspective-of-UAVs-based-on-CNNs .

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