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Alden Research Laboratory, Inc. (Alden) (Holden, Massachusetts) was founded in 1894 as part of Worcester Polytechnic Institute (WPI). It is the oldest continuously operating hydraulic laboratory in the United States. Today, as an independent entity, Alden has become a recognized leader in the field of fluid dynamics research and development.
Contents
1 History
1.1 Industrial Revolution
1.2 Mid-Century
1.3 Incorporation
2 Major Innovations
3 Alden Today
3.1 Hydraulic Modeling
3.2 Environmental
3.3 Air and Gas Flow Modeling
3.4 Numeric Modeling
3.5 Calibration
4 References
5 External links
//
History
Industrial Revolution
In light of the industrial revolution, the widespread use of water powered mills, and the need for higher and higher efficincies, Professor George I. Alden of WPI saw the need for a new lab. The Hydraulic Testing Lab at WPI was established in 1894 on the site of an old woolen mill donated to the institute by Stephen Salisbury III. It was the third of its kind in the US . The first two instruments obtained for the lab, a wooden framed structure only 90' by 40', were a copper-lined weigh tank on a Fairbanks scale from the Philadelphia Centennial Exposition, and a 36" by 16" Herschel Venturi flow meter from the 1893 Chicago Columbian Exposition. These state of the art instruments were used by students to conduct experiments on the efficiency of full sized turbines, measure flows and head loss, and test an hydraulic ram. In 1908 a wooden rotating boom was constructed on one of the ponds on the property to test large hydraulic equipment including current meters. In 1911 it was replaced by a steel boom which was used for the same purpose and eventually to test airplane propellers; it is now an ASME Historic Landmark .
Mid-Century
Alden contributed to the war effort in the 1940's through studies of the physics of the entry of projectiles into water. Early high speed photography equipment was developed for use with strobe lights to document the effect of projectile shape on entry stability in large glass sided tanks.
During the 1950's, the increase in power use demanded expansion of generation capacity and led to increased use of physical models for solving problems with circulating water systems, including the use of hydro-thermal modeling to meet water quality requirements. This need resulted in the construction of 10 large test sheds to house these models. Physical models were applied to various flow problems such as pump intakes, emergency core cooling sumps, riverine problems, etc.
Incorporation
In 1986 the Alden Hydraulic Lab became Alden Research Laboratory and was incorporated as an entity separate from WPI. Since that time Alden has added on to its original Hydraulic and Calibration Groups and formed its Environmental, Numeric, Air and Gas , and Field Service Groups.
Alden Research Laboratory today consists of over 100,000square feet (9,300m2) of enclosed space located on the original 32acres (130,000m2) of land in Holden, MA. It has also expanded to include an office in Fort Collins, Colorado.
Major Innovations
In recent history, Alden's team of engineers have worked on several influential projects including:
The design and testing of the Alden/NREC Fish Friendly Turbine
And the writing of EPRI's "Wet Stack Design Guide"
Alden Today
Alden Research Laboratory today consists of over 100,000square feet (9,300m2) of enclosed space located on the original 32acres (130,000m2) of land in Holden, MA. It has also expanded to include an office in Fort Collins, Colorado.
Hydraulic Modeling
Alden's Hydraulic Modeling Group conducts model studies for hydropower intakes, flood and drainage canals, spillway discharge systems, water and waste water systems, industrial flow processes, ocean energy technologies, navigation models, and many other flow related projects. Both physical and computational fluid dynamics (CFD) modeling are used.
Environmental
The Environmental Group at Alden evaluate fish protection technologies, alternative technologies, cooling water intake structures, upstream and downstream fish passage designs, hydroelectric entrainment and mortality, and aid in strategic planning for 316(b) compliance.
Air and Gas Flow Modeling
The Air and Gas Modeling Group at Alden is responsible for modeling many aspects of fossil fueled power plants and air pollution control systems. This group also uses both physical and computational models.
Numeric Modeling
Alden's Numeric Modeling Group solves many complex flow-related problems involving liquid and gas flows, hydraulic flows, heat and mass transfer, as well as particles and sprays.
Calibration
Alden is the largest independent supplier of National Instutute of Standards...(and so on)

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