John Blair Wells Physics: Overview of Fluid Dynamics

In Physics, there are many different subsectors and disciplines with specific behaviors that help to describe the interactions of specific matter and properties. The reason that these several different specializations and categories exist, is because of the inherent complexity of physics as a whole. One fascinating field of physics is the study of fluid dynamics, a sub-discipline of fluid mechanics that deals directly with fluid flow, also know as the natural science of liquids and gases in motion. Fluid dynamics has a surprisingly wide range of possible applications, including being able to predict with extreme accuracy the forces on an aircraft, the mass flow rate of things like gas and petroleum through pipelines, as well as even predicting things like weather patterns.

Fluid dynamics offers the world of physics a systematic structure, a mathematical procedure that can produce empirical and definitive, constant laws that can be followed as a rule of thumb when dealing with gases and liquids. Usually, the application of fluid dynamics involves being able to properly calculate the various properties of a fluid, including things like temperature, density, flow velocity, and pressure, all important factors in the fluid’s behavior.

Much of fluid dynamic’s practical applications include the fundamental conservation laws, including the conservation of mass, Newton’s second law of motion, and the conservation of energy. All of these are primarily derived from the classical mechanics in physics, though are also complemented by quantum physics and general relativity. The field is so useful because they are automatically subject to the continuum assumption, which means that fluids are continuous, instead of discrete. That means each fluid property is clearly defined and stays the same.

John Blair Wells is a physics enthusiast who studies every area that he can, including fluid dynamics.

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Physics