Tag: flow control

Flow control is a major rapidly evolving field of fluid dynamics. It implies a small change of a configuration serving an ideally large engineering benefit, like drag reduction, lift increase, mixing enhancement or noise reduction. This change may be accomplished by passive or active devices. Passive devices, like turbulators or roughness elements, are steady and require no energy by definition. Active control requires actuators which may be driven in a time-dependent manner and require energy.

Editor’s Comments: Working Smarter

Editor’s Comments: Working Smarter

DUSTY CHAPARRAL, RED sand, and ocotillo cacti sped by the window for hours as writer Ryan Bradley drove off-road through Arizona’s Sonoran Desert. When he finally pulled over for the night, the sun had slipped over the distant hills, turning the dry landscape a rosy pink.

Boiler Operation and Maintenance Basics

Boiler Operation and Maintenance Basics

Boilers have been at the heart of the industrial revolution since the invention of the steam engine by James Watt back in the 18th century. Essentially like a giant tea kettle, they are vessels in which water is heated, flashed to steam, and then extracted to perform useful work. However,

Steam and Power

Steam and Power

Boilers have been at the heart of the industrial revolution since the invention of the steam engine by James Watt back in the 18th century. Essentially like a giant tea kettle, they are vessels in which water is heated, flashed to steam, and then extracted to perform useful work. However,

Protecting Storm Drains and Inlets From Sediment and Pollutants

Protecting Storm Drains and Inlets From Sediment and Pollutants

The trouble with stormwater runoff is that it travels along the ground surface and over pavement, picking up sediment and other contaminants as it goes. A well-designed surface water runoff collection and drainage system will funnel runoff from relatively large areas into individual collection points such as inlets and drains

Underground Storage and Detention Systems

Underground Storage and Detention Systems

Whether a site is undeveloped, densely developed, or somewhere in between, it can face challenges in detaining stormwater runoff. When aboveground space is at a premium, underground stormwater detention systems are an efficient way to store, detain, or infiltrate stormwater runoff while the ground above is used for parking, parks,

Komatsu America Corp. introduces the new PC238USLC-11 hydraulic excavator

Komatsu America Corp. introduces the new PC238USLC-11 hydraulic excavator

Heavy counterweight mass and rounded cab combine for true tight tail swing performance and better lift capacity than most conventional, same-size-class excavators

Rolling Meadows, Ill., February 19, 2017 – Komatsu America Corp., a leading global heavy equipment manufacturer, today introduced the new PC238USLC-11 hydraulic excavator. Equipped with an EPA Tier 4

Interception and Filtration

Interception and Filtration

The trouble with stormwater runoff is that it travels along the ground surface and over pavement, picking up sediment and other contaminants as it goes. A well-designed surface water runoff collection and drainage system will funnel runoff from relatively large areas into individual collection points such as inlets and drains

Making Room for Runoff

Making Room for Runoff

Whether a site is undeveloped, densely developed, or somewhere in between, it can face challenges in detaining stormwater runoff. When aboveground space is at a premium, underground stormwater detention systems are an efficient way to store, detain, or infiltrate stormwater runoff while the ground above is used for parking, parks,

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