A new equation for accurate approximation of the Moody friction factor in the general gas-flow equation better approximates a wide range of Reynolds numbers than previously published equations. Other, ...

Tests for a proposed friction-factor equation have shown it to be accurate for calculating pressure loss in turbulent flow for a non-Newtonian fluid. Click on the pdf link below to view entire article ...

In today's episode, Shini tells us about Static and Kinetic friction. Why is it hard to move a heavy bookcase across a carpeted floor? And why is it easier to keep it moving than it was to get it ...

A team of microsystems engineers at Université de Lyon, École Centrale de Lyon has developed a method to create a desired amount of friction between two flat surfaces without resorting to math. Their ...

Accurate prediction of pressure loss in turbulent pipe flow is essential to the design and operation of pipelines across water, oil and gas, and industrial processing systems. Central to this task is ...

Everybody knows how a yo-yo works. It's two disks mounted on an axle attached to a piece of string, and it goes up and down if you throw it right. But what about when the two disks and the axle aren't ...

In this chapter we gathered the three main problems one faces in metal-forming simulation once the element and the constitutive formulation are chosen: The contact problem is still among the most ...