1:45 PM - 3:15 PM
[O11-P81] To Control the Surficial Environment ~The Potentiality of a Fractal Structure~
Keywords:Sierpinski Tetrahedron, Thermal radiant environment, Fluid, Resistance
1. Background and Purpose
Fractal-structured sunshades with Sierpinski tetrahedrons have excellent heat dissipation properties and are effective in reducing temperature rise. The purpose of this study was to investigate the effects of the tetrahedron structure and the surrounding air movement on the thermal radiation environment.
2. Methods
Three types of Sierpinski tetrahedrons with different numbers of hollows were used in the experiment.
Experiment 1: The cooling process of the tetrahedrons after heating was measured with and without wind.
Experiment 2: The tetrahedron was submerged in a water tank, and water resistance was measured from the speed at which the tetrahedron was pulled up using a weight.
3. Results and Discussion
Experiment 1: With wind, the temperature drop was faster as the number of hollows increased, indicating that the difference in structure affected the temperature drop. No difference was observed when there was no wind.
Experiment 2: The higher the number of hollows, the higher the terminal velocity, suggesting that the water resistance was smaller.
These results indicate that differences in structure affect fluid flow, which is related to thermal radiation and the resistance the tetrahedron experiences.
4. Future Prospects Clarify the relationship between the internal structure of the tetrahedron and the ease of fluid flow through the interior. Clarify the relationship between flow and heat exchange efficiency. Analyze the heat transfer in space numerically through simulation. Based on the experimental results, I believe that fractal structures may be used not only as sunshades but also as coastal structures. In the future, I would like to clarify the strength of the tetrahedron and examine whether such applications are feasible.
Fractal-structured sunshades with Sierpinski tetrahedrons have excellent heat dissipation properties and are effective in reducing temperature rise. The purpose of this study was to investigate the effects of the tetrahedron structure and the surrounding air movement on the thermal radiation environment.
2. Methods
Three types of Sierpinski tetrahedrons with different numbers of hollows were used in the experiment.
Experiment 1: The cooling process of the tetrahedrons after heating was measured with and without wind.
Experiment 2: The tetrahedron was submerged in a water tank, and water resistance was measured from the speed at which the tetrahedron was pulled up using a weight.
3. Results and Discussion
Experiment 1: With wind, the temperature drop was faster as the number of hollows increased, indicating that the difference in structure affected the temperature drop. No difference was observed when there was no wind.
Experiment 2: The higher the number of hollows, the higher the terminal velocity, suggesting that the water resistance was smaller.
These results indicate that differences in structure affect fluid flow, which is related to thermal radiation and the resistance the tetrahedron experiences.
4. Future Prospects Clarify the relationship between the internal structure of the tetrahedron and the ease of fluid flow through the interior. Clarify the relationship between flow and heat exchange efficiency. Analyze the heat transfer in space numerically through simulation. Based on the experimental results, I believe that fractal structures may be used not only as sunshades but also as coastal structures. In the future, I would like to clarify the strength of the tetrahedron and examine whether such applications are feasible.