Engineering

Compared: SDR 26 vs. SDR 35

SDR 26 and SDR 35 are size classifications of PVC pipe. The SDR, or standard dimensional ratio, is the ratio between a pipe’s outer diameter and its minimum wall thickness. As the SDR rating increases, the pipe wall becomes thinner relative to the outer diameter. That means that PVC pipes with lower SDR ratings are …

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Advantages of Turbulent Flow

Flow of fluids, both gaseous and liquid, is generally categorized into two distinct groups: laminar and turbulent. While one might assume that turbulent flow means “faster”, the truth is actually a little more complicated than that. Understanding whether a flow is turbulent and how it behaves is fundamental to the study of aerodynamics and plays …

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Why Does Flow Become Turbulent?

Fluid dynamics – and more specifically, fluid flow – is the study of how fluids (both liquid and gas) move when subjected to unbalanced forces. Flow can either be laminar or turbulent. Laminar flow occurs when fluid particles are moving together in the same direction in parallel paths. It’s defined as smooth, steady motion where …

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Moody vs. Darcy Friction Factor

In fluids engineering, evaluating the pressure loss due to friction is an important aspect of design. To determine this loss, a factor, such as the Darcy friction factor, is used to simplify the calculations. Understanding how to calculate the Darcy friction factor can assist an engineer with applying it, but a simplification for determining the …

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