1. ERDC Knowledge Core
  2. Engineer Research and Development Center (ERDC)
  3. Cold Regions Research Engineering Laboratory (CRREL) - (2/1/1961 - present)
  4. Publication
  5. Special Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/32733
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dc.contributor.authorTorres, Marissa J.-
dc.contributor.authorStott, Alexander R.-
dc.contributor.authorLeGrand, Sandra L.-
dc.contributor.authorReilly-Collette, Marina I.-
dc.date.accessioned2019-05-22T19:41:30Z-
dc.date.available2019-05-22T19:41:30Z-
dc.date.issued2019-05-
dc.identifier.govdocERDC/CRREL SR-19-1-
dc.identifier.urihttps://hdl.handle.net/11681/32733-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/32733-
dc.descriptionTechnical Report-
dc.description.abstractAtmospheric, or environmental, wind tunnels are ideal for basic research and applied physical modeling and for supporting the numerical model validation process. The U.S. Army Corps of Engineers, Engineer Research and Development Center (ERDC), has had an active presence in the field of research physical modeling. Between the ERDC Environmental Laboratory (EL), the Cold Regions Research and Engineering Laboratory (CRREL), and the Geotechnical and Structures Laboratory (GSL), there is one historical, three operational, and one future planned atmospheric wind tunnel. Each facility was uniquely designed to study different areas of atmospheric phenomena. This report reviews and highlights the characteristics of each facility and their target research applications. In particular, there is a desire to expand the scope of the CRREL Environmental Wind Tunnel (EWT) physical modeling capability. Expanding that capability be-yond snowdrift modeling opens the door to geometrically full-scale turbulent-boundary-layer experiments on air-land and potentially air-water interfaces. Sustaining and improving internal wind-tunnel facilities is vital to the ERDC mission, promoting innovation and versatility in atmospheric physical modeling.en_US
dc.description.sponsorshipUnited States. Office of the Assistant Secretary of the Army for Acquisition, Logistics, and Technology.en_US
dc.description.tableofcontentsAbstract .......................................................................................................................................................... ii Figures and Tables ........................................................................................................................................ iv Preface ............................................................................................................................................................ vi Acronyms and Abbreviations .....................................................................................................................vii Unit Conversion Factors ........................................................................................................................... viii 1 Introduction ............................................................................................................................................ 1 1.1 Objective .......................................................................................................................... 1 1.2 Background ..................................................................................................................... 2 1.2.1 Modeling the atmospheric boundary layer ........................................................................ 3 1.2.2 Wind-tunnel configurations ................................................................................................. 5 1.2.3 ERDC wind-tunnel facilities ................................................................................................. 7 1.3 Approach ....................................................................................................................... 10 2 CRREL Environmental Wind Tunnel ................................................................................................ 11 2.1 Wind-tunnel structure ................................................................................................... 11 2.1.1 Contraction ........................................................................................................................ 11 2.1.2 Test section ........................................................................................................................ 13 2.1.3 Fan ...................................................................................................................................... 16 2.1.4 Downstream trap ............................................................................................................... 16 2.2 Instrumentation ............................................................................................................ 18 2.2.1 Range-finding sensor ........................................................................................................ 18 2.2.2 Hot-wire anemometer ........................................................................................................ 20 2.2.3 Pitot tube ............................................................................................................................ 21 2.3 Velocity profile ............................................................................................................... 22 3 Recommendations for Expanded Capability ................................................................................. 23 3.1 Modular test section ..................................................................................................... 23 3.2 Exhaust control for hazardous materials ..................................................................... 23 3.3 Particle image velocimetry ........................................................................................... 24 3.4 Cold capabilities............................................................................................................ 25 4 Summary ............................................................................................................................................... 26 References ................................................................................................................................................... 29 Appendix A: Supplemental Information ................................................................................................. 32 Report Documentation Page-
dc.format.extent46 pages / 3.946 Mb-
dc.format.mediumPDF/A-
dc.language.isoen_USen_US
dc.publisherCold Regions Research and Engineering Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesSpecial Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL SR-19-1-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectAerodynamicsen_US
dc.subjectAtmospheric physicsen_US
dc.subjectAtmospheric sciencesen_US
dc.subjectScientific apparatus and instrumentsen_US
dc.subjectWind tunnelsen_US
dc.titleCRREL Environmental Wind Tunnel : characteristics and capabilitiesen_US
dc.typeReporten_US
Appears in Collections:Special Report

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