Engineering

A Summary Explanation of Fluid Mechanics In Engineering

When mechanical engineering is mentioned in a conversation, people without any prior knowledge will imagine solid systems such as gears. But fluids are also very important in mechanical engineering and lots of engineering systems. We will explain this importance as a summary here. 

What Is Fluid?

As we know that there are three main phases of substances; gas, liquid and solid. There are lots of kinds of engineering systems that utilize these three phases separately or at the same time. In the engineering approach, solid and fluid systems are separated from each other. Here, fluid include the liquid and gas phases of substance. They are of fluid mechanics deals with the natural rules and applications of these natural rules of fluids to useful systems. 

Schaum’s Outline of Fluid Mechanics and Hydraulics (Schaum’s)

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Better Understanding of Fluid Mechanics

In mechanics, solid bodies are aforementioned. If a mechanical system is stationary, the system is referred to as static. And the branch of mechanics that deals with static systems is called statics. On the other hand, if a mechanical system has moving parts or dynamic parts, a branch of mechanics called dynamics deals with these systems. 

As you understand that, the other part of mechanics is fluid mechanics. If a fluid is stationary, fluid statics deals with these systems. And if fluid is moving, this is called fluid dynamics. 

First of all, you need to know the distinction between the mechanics and fluid mechanics, before starting fluid mechanics. 

Some Subcategories of Fluid Mechanics

Gas turbine(Image Source:https://www.flickr.com/photos/44742231@N03/4111637703).

According to the application areas and useful systems of fluid mechanics, fluid mechanics have various sub-categories. 

According to the compressibilities of moving fluids, fluids are classified as compressible or incompressible. The sub-category of fluid mechanics which is called hydrodynamics deals with the incompressible dynamic fluid systems. The sub-category hydrodynamics which is also called hydraulics deals with the liquid flows in pipes and channels. A very known example of hydraulics is dozer bucket mechanisms. There are very complex hydraulic mechanisms to operate these bucket mechanisms. 

Compressible fluid means that if a fluid undergoes significant density changes. A sub-category of fluid mechanics deals with these compressible systems, called gas dynamics. There are lots of engineering systems that include the flow of fluids through nozzles at a very high speed, which undergoes very high-density changes. The flow of burnt gases through jet engine nozzles is a very important example of it. 

Conclusion

This small explanation of fluid mechanics in mechanical engineering will be very vital before starting everything. 

Do not forget to leave your comments and questions below about the fluid mechanics in mechanical engineering! 

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