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CRYOGENIC WIND TUNNELS.

Author(s) : KILGORE R. A.

Summary

ABILITY TO GET GOOD EXPERIMENTAL DATA IN WIND TUNNELS IS OFTEN COMPROMISED BY THINGS SEEMINGLY BEYOND CONTROL. UNTIL RECENTLY, AN INADEQUATE TEST REYNOLDS NUMBER HAS BEEN A MAJOR PROBLEM, ESPECIALLY AT TRANSONIC SPEED. THE FIRST PRACTICAL SOLUTION CAME IN THE EARLY 1970S WITH THE DEVELOPMENT OF WIND TUNNELS COOLED TO CRYOTEMPERATURE BY THE DIRECT INJECTION OF LIQUID NITROGEN INTO THE TUNNEL CIRCUIT. THE DESCRIBED EXPERIMENTAL TUNNEL HAS A 2. 5 X 2.5 M TEST SECTION, OPERATES AT PRESSURES UP TO 900 KILOPASCALS, AND IS COOLED BY THE DIRECT INJECTION OF LIQUID NITROGEN AT RATES UP TO 450 KG/S. FOLLOWING A SHORT HISTORICAL OVERVIEW, THE STATE OF DEVELOPMENT AND USE OF CRYOGENIC TUNNELS AROUND THE WORLD IS DESCRIBED, WITH EMPHASIS ON ACTIVITIES IN JAPAN, EUROPE, AND THE CIS.

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Pages: 267-274

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Details

  • Original title: CRYOGENIC WIND TUNNELS.
  • Record ID : 1992-2041
  • Languages: English
  • Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
  • Publication date: 1991/08/10
  • Document available for consultation in the library of the IIR headquarters only.

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