other · DR-NTU (Nanyang Technological University) · 2017
CFD simulation for air-conditioning environment using fluent with user-defined function
Ong, Aidan Jiong Shun
Cited by 0Abstract and details only
Abstract
Singapore is known for having a tropical climate with hot and humid weather all year \nround. The abundance of high-rise buildings on this tiny red dot have led to wind \nobstructions and resulted in an undefined distribution of air flow. This effect affects \nurban resident’s summer discomfort and greatly increases air conditioning loads. \nWith this rising concern, the national authorities have incorporated the “Heating, \nVentilating and Air-Conditioning” (HVAC) system into residential structures to \nimprove thermal comfort. However, this implementation can potentially lead to \nhigher energy consumption and worsens global warming. \nThrough the advancement of modern technology, Computational Fluid Dynamics \n(CFD) is used extensively today by researchers to investigate and analyse the \nexpectancy of air flow flowing into the indoor buildings. \nThe methodology of the numerical experiment is applied on ANSYS/Fluent software. \nFirstly, a geometric model is drawn based on two cases of two-dimensional \nconfiguration profiles, with and without heat source respectively. Next, the meshing \nconsiderations allow for refinement and enhancement on the mesh size, and the \n‘Named selection’ feature function to state the design components. Subsequently, the \nboundary conditions for the input parameters such as the direction of air flow, range \nof time, air temperature and position of inlet and outlet differs for the respective two \ncases. Lastly, the setup in key parameters further improvises the iteration results, \nwhereby timing is crucial for the generation of the contour and vector plots. \nUser-Defined Function (UDF) is a written programme source code that controls the \nair flow velocity direction with respect to time and with the velocity magnitude \nremains constant. With the iterated results, the air flow velocity and the temperature \nof contour and vector plots are compared and discussed with no UDF, irreversible \nUDF and reversible UDF respectively. For further validation, the heat sources are \nidentified as real life occupants are added in the numerical experiment to give more \nlogical and realistic results. Therefore, the objective of this project study is to show \nthrough the two-dimensional configuration profiles room, that UDF is able to help \nachieve optimal air flow and thermal distribution.
Cite this paper
Ong, A. J. S. (2017). CFD simulation for air-conditioning environment using fluent with user-defined function. DR-NTU (Nanyang Technological University).
Ong, Aidan Jiong Shun. “CFD simulation for air-conditioning environment using fluent with user-defined function.” DR-NTU (Nanyang Technological University), 2017.
Ong, Aidan Jiong Shun. 2017. “CFD simulation for air-conditioning environment using fluent with user-defined function.” DR-NTU (Nanyang Technological University).
Ong, A.J.S. (2017) ‘CFD simulation for air-conditioning environment using fluent with user-defined function’, DR-NTU (Nanyang Technological University).
@misc{ong2017simulation,
title = {{CFD simulation for air-conditioning environment using fluent with user-defined function}},
author = {Ong, Aidan Jiong Shun},
journal = {DR-NTU (Nanyang Technological University)},
year = {2017}
}Made from the index record. Check names, capitalisation and page numbers against the paper. Need another style? AI for Research has over 10,000.