CFD Simulation On The Pressure Distribution For An Isolated Single-Story House With Extension: Grid Sensitivity Analysis

4th International Conference on Civil and Environmental Engineering for Sustainability

地球科学;生态环境科学;经济学

Yahya, W.N.W.^1 ; Zaini, S.S.^1 ; Ismail, M.A.^2 ; Majid, T.A.^1 ; Deraman, S.N.C.^1 ; Abdullah, J.^1

Disaster Research Nexus, School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, Penang, Malaysia^1

Advance Packaging and SMT Group, School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, Penang, Malaysia^2

关键词: CFD simulations;    Global climate changes;    Grid sensitivity;    Low-rise buildings;    Numerical procedures;    Pressure coefficients;    Wind tunnel tests;    Wind-related disasters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/140/1/012005/pdf
DOI  :  10.1088/1755-1315/140/1/012005

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Damage due to wind-related disasters is increasing due to global climate change. Many studies have been conducted to study the wind effect surrounding low-rise building using wind tunnel tests or numerical simulations. The use of numerical simulation is relatively cheap but requires very good command in handling the software, acquiring the correct input parameters and obtaining the optimum grid or mesh. However, before a study can be conducted, a grid sensitivity test must be conducted to get a suitable cell number for the final to ensure an accurate result with lesser computing time. This study demonstrates the numerical procedures for conducting a grid sensitivity analysis using five models with different grid schemes. The pressure coefficients (CP) were observed along the wall and roof profile and compared between the models. The results showed that medium grid scheme can be used and able to produce high accuracy results compared to finer grid scheme as the difference in terms of the CPvalues was found to be insignificant.