High Reynolds Number Flows Using Liquid and Gaseous Helium

1. Front Matter

   Pages i-xi

   PDF

2. Introduction

   1. Front Matter

      Pages 1-1

      PDF

   2. Liquid and Gaseous Helium as Test Fluids

      • Russell J. Donnelly

      Pages 3-49

3. Modern Wind Tunnels

   1. Front Matter

      Pages 51-51

      PDF

   2. Cryogenic Wind Tunnels

      • Robert A. Kilgore

      Pages 53-63

   3. Aerodynamic Testing in Cryogenic Nitrogen Gas — A Precursor to Testing in Superfluid Helium

      • Pierce L. Lawing

      Pages 65-77

   4. High-Reynolds-Number Test Requirements in Low-Speed Aerodynamics

      • D. M. Bushnell, G. C. Greene

      Pages 79-85

   5. Flow Visualization

      • Leonard M. Weinstein

      Pages 87-103

   6. On the Measurement of Subsonic Flow around an Appended Body of Revolution at Cryogenic Conditions in the NTF

      • D. W. Coder, S. G. Flechner, J. B. Peterson Jr.

      Pages 105-124

   7. Water Tunnels

      • Lisa J. Bjarke

      Pages 125-130

   8. The Six Component Magnetic Suspension System for Wind Tunnel Testing

      • M. J. Goodyer

      Pages 131-152

   9. Magnetic Suspension — Today’s Marvel, Tomorrow’s Tool

      • Pierce L. Lawing

      Pages 153-164

   10. Recent Aerodynamic Measurements with Magnetic Suspension Systems

       • Colin P. Britcher

       Pages 165-179

   11. Remarks on high-Reynolds-number turbulence experiments and facilities

       • K. R. Sreenivasan

       Pages 181-184

4. Helium

   1. Front Matter

      Pages 185-185

      PDF

   2. Micro and Macroturbulence in Superfluid Helium

      • K. W. Schwarz

      Pages 187-207

   3. Application of Flow Visualization Technique to Superflow Experiment

      • N. Ichikawa, M. Murakami

      Pages 209-214

   4. Laser Doppler Velocimeter Applied to Superflow Measurement

      • M. Murakami, T. Yamazaki, A. Nakano, H. Nakai

      Pages 215-221

   5. Experimental Investigations of He II Flows at High Reynolds Number

      • S. W. Van Sclver

      Pages 223-232

   6. A Study of Homogeneous Turbulence in Superfluid Helium

      • Michael R. Smith, Russell J. Donnelly

      Pages 233-242

Liquid helium has been studied for its intrinsic interest through much of the 20th century. In the past decade, much has been learned about heat transfer in liquid helium because of the need to cool superconducting magnets and other devices. The topic of the Seventh Oregon Conference on Low Temperature Physics was an applied one, namely the use of liquid and gaseous helium to generate high Reynolds number flows. The low kinematic viscosity of liquid helium automatically makes high Reynolds numbers accessible and the question addressed in this conference was to explore various possibilities to see what practical devices might be built using liquid or gaseous helium. There are a number of possibilities: construction of a wind tunnel using critical helium gas, free surface testing, low speed flow facilities using helium I and helium ll. At the time of the conference, most consideration had been given to the last possibility because it seemed both possible and useful to build a flow facility which could reach unprecedented Reynolds numbers. Such a device could be useful in pure research for studying turbulence, and in applied research for testing models much as is done in a water tunnel. In order to examine these possibilities in detail, we invited a wide range of experts to Eugene in October 1989 to present papers on their own specialties and to listen to presentations on the liquid helium proposals.

• aerodynamics
• convection
• design
• fluid dynamics
• low temperature physics
• simulation
• fluid- and aerodynamics

• Department of Physics, University of Oregon, Eugene, USA

  Russell J. Donnelly

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