Udemy – Fluid Mechanics and Transportation

Fluid Flow Fundamentals training course provided by Velocis Solutions aims to deliver the most fundamental and applied knowledge about fluid transport and its significant contributors. Here in this course, you will go through the following topics:

• Fluid Mechanics and Transportation

• Pump operation principles & selection

• Centrifugal & Positive Displacement Pumps

• Sizing of Pressure Changers (Pipe/Pipeline, Pump and Compressor)

• Performance Curve & capacity control of Pressure Changers (Pump and Compressor)

What you like to have an introductory information about fluid flow fundamentals? Here it is:

Although liquids particularly can be transported by operators carrying buckets, the usual mode of transport of fluids is through pipelines with pumps, compressors and etc. The continuous transport of a liquid requires a pump, and the continuous transport of a gas or vapor requires compressor. These devices are described by the general term fluid changers and basic characteristics of these fluid flow equipments are introduced in this course.

The performance of pumps and compressors is dictated by their characteristic curves and for pumps, the net positive suction head curve. Pipes and their associated fittings that are used to transport fluid through a chemical plant are usually made of metal. Pipes are sized using a nominal diameter and a schedule number. The higher the schedule number, the thicker the pipe walls, making pipes with a higher schedule number more suitable for higher-pressure operations.

Pumps are used to transport liquids, and pumps can be damaged by the presence of vapor. Positive-displacement pumps are often called constant-volume pumps because a fixed amount of liquid is taken into a chamber at a low pressure and pushed out of the chamber at a high pressure. The chamber has a fixed volume, hence the name. An example of a positive-displacement pump is a reciprocating pump

Compressor is the device that increase the pressure of gases. In a centrifugal, the impeller may spin at tens of thousands of revolutions per minute. If liquid droplets or solid particles are present in the gas, they hit the impeller blades at such high relative velocity that the impeller blades will erode rapidly and may cause bearings to become damaged, leading to mechanical failure. The compressor casing also may crack. Therefore, it is important to ensure that the gas in a centrifugal compressor does not contain solids and liquids. Positive-displacement compressors typically handle lower flowrates but can produce higher pressures compared to centrifugal compressors. Efficiencies for both types of compressor tend to be high.

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