<p>The fluid simulation in computer generates realistic
animations of fluids by solving Navier-Stokes equation. The methods of simulation are
divided into two types. The grid-based methods and particle-based methods. The
former one is wildly used for scientific computation because of its precision
of simulation while the latter one is used in visual effects, games and other
areas requiring real-time simulation because of the less computation time it
has. </p>
<p> </p><p>The indoor airflow simulations with HVAC system in construction design is
one specific application in scientific computation and uses grid-based
simulation as the general-purpose simulation does. This study addresses
the problem that this kind of airflow simulations in construction design using grid-based
methods are very time consuming and always need designers to do pretreatment of
the building model, which takes time, money, and effort. On the other hand, the
particle-based methods would have less computation time with an acceptable
accuracy in indoor
airflow simulations because this kind of simulation does not require very high
precision.</p>
<p><br></p><p>Then this study conducts a detailed and practical comparison
of different fluid simulation algorithms in both grid-based methods and
particle-based ones. This study's deliverable is a comparison between
particle-based and grid-based methods in indoor airflow simulations with HVAC system.</p>
<p><br></p><p>The overall methodology used to arrive at the deliverables of
this study will need two parts of work. The benchmark data is gathered from a CFD
software simulation using FVM with a decent grid resolution. The particle-based
data will be generated by simulation algorithms over the same set of room and
furniture models implemented by OpenGL and CUDA. After the benchmark FVM simulation
being conducted in a CFD software, the temperature field of airflow will be
measured. After simulation, the temperature field are gained on each one of 4
particle-based simulation. A comparison standard is set and data will be
analyzed to get the conclusion. The result shows that in a short simulation
time period, after finding a proper number of particles, the particle-based
method will achieve acceptable accuracy of temperature and velocity field while
using much less time.</p><p></p>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/14495331 |
| Date | 06 May 2021 |
| Creators | Yuanpei Zhao (10709238) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/thesis/A_Comparison_of_Air_Flow_Simulation_Techniques_in_Architectural_Design/14495331 |
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