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Physical Flow Testing and CFD Validation to Ensure Performance of Nuclear Industry Check Valves

Physical Flow Testing and CFD Validation to Ensure Performance of Nuclear Industry Check Valves

To ensure end user performance requirements, BNL Industries Inc. undertook a testing and analysis program to evaluate a revised design of its TwinLine double door check valve.  Alden used test data from an earlier TwinLine design (collected by Alden in the laboratory in 2003) to validate Computational Fluid Dynamics (CFD) for use in determining flow coefficient (Cv) for BNL’s new valve.  The overarching goal of this effort was to see if a new TwinLine design would meet the string...
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Journal Article on Contact Tank Hydraulic Efficiency

Journal Article on Contact Tank Hydraulic Efficiency

Together with co-authors from Colorado State University, Alden’s Zach Taylor has published an article in the Journal of Hydraulic Research on using Computational Fluid Dynamics (CFD) to design baffles in contactor tanks. In particular, the study addresses the question: for a given footprint of a rectangular tank with a specified inlet width, how does the hydraulic efficiency of a baffled tank depend on the configuration of internal baffles?
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Even Small Site Changes Can Risk Flood Safety For Nuclear Power Plants

Even Small Site Changes Can Risk Flood Safety For Nuclear Power Plants

HOLDEN, MA — After Japan’s Fukushima Dai-Ichi accident, there has been increased awareness and regulatory scrutiny regarding flood protection for U.S. nuclear power facilities. Yet one of the most important lessons learned from recent flooding hazard re-evaluations is that for reasons of security, modernization or convenience, important flood protection mechanisms and infrastructure are often ignored or undermined. In the years since most U.S. plants were constructed and initially l...
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ALDEN'S Charles “Chick” Sweeney, P.E. Receives Pamela Klatt Award

ALDEN'S Charles “Chick” Sweeney, P.E. Receives Pamela Klatt Award

Alden’s Chick Sweeney will receive the prestigious Pamela Klatt award for his outstanding contribution and commitments to the Northwest hydropower industry. The award will be presented at the NWHA annual conference on February 18. More information about the award and the past recipients can be found here: www.nwhydro.org/nwha_home/award.htm
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ALDEN ideally positioned to support small companies' hydropower technologies through the DOE SBIR program

ALDEN ideally positioned to support small companies' hydropower technologies through the DOE SBIR program

The Energy Department's Office of Energy Efficiency and Renewable Energy (EERE) recently announced nine topics and 26 new subtopics under its Small Business Innovation Research (SBIR) and Technology Transfer (STTR) programs that will help small businesses develop and deliver market-driven clean energy technologies.
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ALDEN Engineer Instructs Young Women in Engineering Seminar held in Upper Connecticut River Valley

ALDEN Engineer Instructs Young Women in Engineering Seminar held in Upper Connecticut River Valley

ALDEN Engineer Participates in STEM Program in Massachusetts Alden’s Celeste Fay was an instructor for this program aimed at stimulating interest in the fields of science, technology, engineering and math (STEM) in young women.  Here is the entire text of the article courtesy of The Valley News- The small wooden bridge, spray painted a pale orange, sat suspended between two sets of cinder blocks about 18 inches off the floor. A group...
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