NDLI: Redesign and improvement of an open circuit wind tunnel

Content Provider	Springer Nature Link
Author	Piccato, Aline Spazzini, Pier Giorgio Malva, Riccardo
Copyright Year	2014
Abstract	National Standards are the realization of units of measurement aimed to be the basis for the national traceability chain, and the connection to International Standards. Depending on the quantity to be measured, they can consist in material standards, primary instruments, or test rigs realizing the quantity to be measured, coupled to a traceable measurement system. The present paper is focused on such a test rig. The Italian airspeed primary standard is generated, for the range between 2 and 25 m/s, by means of an open-circuit, semi-open test chamber wind tunnel, originally built in the thirties; in the nineties, the wind tunnel was reconditioned by replacing the divergent and the engine/propeller group with a fan in a slowly diverging tube. The renewed rig has a satisfactory behaviour in the lower part of its range, but when the velocity is increased, it undergoes strong vibrations induced by the flow. This fact is strongly undesirable since it affects the precision of the measurements in the higher part of the range. Clearly, this configuration is not adequate for a primary standard facility. Therefore, the divergent and engine/propeller parts of the wind tunnel are being reviewed again, using a design inspired to the original one. In the present paper, we will present the new design analysis that was performed on the new divergent and on new fan in order to validate the design concepts and evaluate possible simplifications of the configuration adopted.
Starting Page	1629
Ending Page	1640
Page Count	12
File Format	PDF
ISSN	00256455
Journal	Meccanica
Volume Number	49
Issue Number	7
e-ISSN	15729648
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-05-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Wind tunnel design Reference measurements CFD Flow fluctuation Mechanics Civil Engineering Automotive Engineering Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Mechanical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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