Title page for ETD etd-11172008-003759


Type of Document Master's Thesis
Author Alghamdi, Jamal Khaled
Author's Email Address jamalkg@vt.edu
URN etd-11172008-003759
Title CFD Simulation Methodology for Ground-Coupled Ventilation System
Degree Master of Science
Department Architecture
Advisory Committee
Advisor Name Title
Jones, James R. Committee Chair
Schubert, Robert P. Committee Member
Vlachos, Pavlos P. Committee Member
Keywords
  • Computational Fluid
  • Ground-Coupled Ventilation
  • CFD
  • GCV
  • geothermal energy
  • soil temperature
  • heat exchange
  • Dynamics
Date of Defense 2008-06-25
Availability unrestricted
Abstract
In the past two decades, a growing interest in alternative energy resources as a

replacement to the non-renewable resources used now days. These alternatives include

geothermal energy which can be used to generate power and reduce the demands on

energy used to heat and cool buildings. Ground-coupled ventilation system is one of the

many applications of the geothermal energy that have a lot of attention in the early 80’s

and 90’s but all designs of the system where based on single case situations. On the other

hand, computational fluid dynamics tools are used to simulate heat and fluid flow in any

real life situation. They start to develop rapidly with the fast development of computers

and processors. These tools provide a great opportunity to simulate and predict the

outcome of most problems with minimum loss and better way to develop new designs.

By using these CFD tools in GCV systems designing procedure, energy can be conserved

and designs going to be improved.

The main objective of this study is to find and develop a CFD modeling strategy

for GCV systems. To accomplish this objective, a case study must be selected, a proper

CFD tool chosen, modeling and meshing method determined, and finally running

simulations and analyzing results. All factors that affect the performance of GCV should

be taken under consideration in that process such as soil, backfill, and pipes thermal

properties. Multiple methods of simulation were proposed and compared to determine the

best modeling approach.

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