For a natural updraft tower, the larger the better. However, the human body won't contribute significantly to it.Kai G said:What are the ideal dimensions of a hyperboloid tower that would maximize the venturi effect started by thermal updraft from human body heat (assuming previous physical activity on a hot day)? Given a 40ft base, how large should the skirt be and how high off the ground? A vertically symmetrical hyperboloid may not be required.
russ_watters said:Welcome to PF!
For a natural updraft tower, the larger the better. However, the human body won't contribute significantly to it.
Probably, yes. People aren't a very dense power source, but 20 people is about 1400 W of sensible heat, which should be enough to induce a measurable convection.Kai G said:The intent is to act as a gathering place. Would 20+ bodies be sufficient?
The Venturi effect is a phenomenon that occurs when a fluid, such as air or water, flows through a narrow passage or constriction. As the fluid passes through the constriction, its velocity increases, while the pressure decreases. This effect is named after Italian physicist Giovanni Venturi who first described it in the 18th century.
In hyperboloid tower construction, the Venturi effect is harnessed to increase the speed of air flow around the tower, creating lower pressure and thus reducing wind loads. This makes hyperboloid towers more stable and able to withstand strong winds, making them a popular choice for tall structures such as skyscrapers and cooling towers.
There are several factors that can affect the optimization of the Venturi effect in hyperboloid tower construction. These include the design of the tower, its height and width, the shape and placement of the openings, and the surrounding terrain and wind conditions. Additionally, the type of material used for construction can also impact the efficiency of the Venturi effect.
The Venturi effect can be calculated and measured by analyzing the changes in air pressure and velocity as it flows through the tower. This can be done through computational fluid dynamics (CFD) simulations, wind tunnel testing, or physical measurements using pressure sensors and anemometers. The results of these tests can then be used to optimize the design of the tower for maximum efficiency.
One of the main challenges in optimizing the Venturi effect in hyperboloid tower construction is finding the right balance between increasing air flow and reducing wind loads. If the constriction is too narrow, it can create excessive pressure differences that could damage the tower. On the other hand, if the constriction is too wide, the Venturi effect may not be strong enough to effectively reduce wind loads. Additionally, other design considerations such as structural stability and aesthetics must also be taken into account when optimizing the Venturi effect.