# Fluid/Air Dynamics question

• RandallPink
In summary, fluid dynamics is the study of the motion of fluids and the forces that act on them. It is used to understand and predict the behavior of fluids in various situations. Air flow is a major factor in aerodynamics, which is the study of how objects move through air. Bernoulli's principle states that as the speed of a fluid increases, its pressure decreases, and this is often used to explain lift in airplane wings. Fluid flow can be measured using various methods such as flow meters and pressure sensors. Fluid dynamics has real-world applications in designing vehicles, weather forecasting, and understanding blood flow in the human body.

#### RandallPink

We are trying to make an inflator for the double roof on a greenhouse using 4" pvc and a vane on the back to keep it pointed into the wind. There is a lot of disagreement on whether a funnel on the intake end will make it work any better than just the 4" pipe facing into the wind.

#### Attachments

• Amish inflator.jpg
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Theoretically, a funnel shouldn't help because pressure is pressure and you can't multiply it, but in reality the system isn't closed and you'll need airflow through it to keep the greenhouse inflated. I think it may be a losing battle, though.

## 1. What is fluid dynamics?

Fluid dynamics is the study of the motion of fluids (liquids and gases) and the forces that act on them. It is a branch of physics and is used to understand and predict the behavior of fluids in various situations.

## 2. How does air flow affect aerodynamics?

Air flow is a major factor in aerodynamics, which is the study of how objects move through air. The shape and design of an object, along with the speed and density of the air, determine the amount of resistance (drag) and lift that an object experiences.

## 3. What is the Bernoulli's principle?

Bernoulli's principle states that as the speed of a fluid (such as air or water) increases, its pressure decreases. This principle is often used to explain the lift generated by airplane wings, where the air moving over the curved surface of the wing has a higher speed, resulting in lower pressure and thus creating lift.

## 4. How is fluid flow measured?

Fluid flow can be measured using various methods, including flow meters, pressure sensors, and velocity probes. These tools allow scientists to measure characteristics such as flow rate, pressure, and velocity of a fluid in a given system.

## 5. What are some real-world applications of fluid dynamics?

Fluid dynamics has many practical applications, including in the design of airplanes, ships, and cars. It is also used in weather forecasting, understanding ocean currents, and designing pipelines and plumbing systems. Additionally, fluid dynamics is important in understanding blood flow in the human body and designing medical devices such as prosthetics and heart valves.

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