# Real-life phenomenon/application of this fluid dynamics model

• rakso
In summary, the conversation discusses finding real-life applications for a model of water flowing in a converging duct. One suggestion is using a conical pastry bag for cake decorating. Another suggestion is using a conical funnel to fill a bottle in the kitchen. It is also mentioned that the problem may become spherical and that this type of flow can be used in the "curtain coating" process for efficient coating of a moving web.
rakso
Thread moved from the technical forums to the schoolwork forums
Hi!

Water is flowing in a converging duct, with the angle α, see the figure.

My task is to find a real-life phenomenon / application of this model, and later solve it numerically / analytically where this fluidproblem occurs. However, my imagination is kinda slow today, what are some fun / trivial / hard applications this? I'm just looking for some different applications to wrap my head around this. Thanks!

A conical funnel is used in the kitchen to fill a bottle.

Baluncore said:
A conical funnel is used in the kitchen to fill a bottle.
True. However, doesn't the problem become spherical?

rakso said:
However, doesn't the problem become spherical?
Yes.
But where does anyone need a sheet of high speed water, that is possibly still converging?
A 1D convergence might imply a rectangular supply pipe.
When do you need to "paint" an area efficiently?

Baluncore

## 1. What are some real-life applications of fluid dynamics models?

Fluid dynamics models are used in a variety of industries and fields, including aerospace, automotive, environmental engineering, and oceanography. They are used to study and predict the behavior of fluids such as air and water in different scenarios, such as in the design of airplanes and cars, the movement of pollutants in the environment, and the behavior of ocean currents.

## 2. How do fluid dynamics models help in understanding weather patterns?

Fluid dynamics models are used in meteorology to simulate and predict weather patterns. By studying the behavior of fluids in the atmosphere, scientists can better understand and forecast weather events such as hurricanes, tornadoes, and thunderstorms. These models also help in the development of more accurate weather forecasting systems.

## 3. Can fluid dynamics models be used in medical research?

Yes, fluid dynamics models are increasingly being used in medical research to study the flow of blood and other fluids in the human body. This helps in understanding and diagnosing conditions such as heart disease, aneurysms, and blood clots. These models can also aid in the design of medical devices such as stents and artificial heart valves.

## 4. How do fluid dynamics models contribute to the design of vehicles?

Fluid dynamics models play a crucial role in the design and optimization of vehicles such as airplanes, cars, and ships. By simulating the flow of air or water around the vehicle, engineers can make improvements to its shape, size, and other features to reduce drag and improve efficiency. This leads to more fuel-efficient and aerodynamic vehicles.

## 5. What are the limitations of fluid dynamics models?

While fluid dynamics models are powerful tools for understanding and predicting the behavior of fluids, they have some limitations. These models rely on simplifications and assumptions, which may not accurately reflect real-world conditions. Additionally, the accuracy of the results is highly dependent on the quality of the data and the assumptions made by the modeler. Therefore, it is important to carefully validate and calibrate these models before using them for real-life applications.

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