A numerical approach for assessing slotted wall interference using the CRM model at ETW

This paper is devoted to the assessment of wall interference in the slotted wall test section of the European Transonic Windtunnel (ETW) over a wide range of Reynolds numbers. The experimental part of the investigation was performed in February 2014 by testing the NASA Common Research Model mounted on a fin-sting support. These tests were carried out within the scope of the ESWIRP project funded by the European Commission in the 7th framework program. The numerical research was based on the Electronic WindTunnel (EWT-TsAGI) software with a cryogenic solver. The assessed Mach number influence on the wall signatures revealed a very similar effect to applying the classical Prandtl–Glauert rule over the investigated Mach number range. Practically, no Reynolds number effects on the wall pressure distributions generated by the model and its support system could be identified over the wide range of Re numbers investigated. The first attempt of the EWT-TsAGI code application for a simulation of ETW tests featuring the model in the slotted wall tunnel showed a fair coincidence of the pressure coefficient distribution on test section walls in the model region, on the wing-root sections and the drag polar at moderate lift coefficient values.

[1]  D. J. Wilsden,et al.  Estimation of tunnel blockage from wall pressure signatures: A review and data correlation , 1979 .

[2]  Eric L. Walker.  Validation of Blockage Interference Corrections in the National Transonic Facility , 2007 .

[3]  Melissa B. Rivers,et al.  Experimental Investigations of the NASA Common Research Model in the NASA Langley National Transonic Facility and NASA Ames 11-Ft Transonic Wind Tunnel (Invited) , 2011 .

[4]  J. Hackett,et al.  Estimation of wind tunnel blockage from wall pressure signatures - Areview of recent work at Lockheed-Georgia , 1978 .

[5]  Alexander J. Krynytzky,et al.  Uncertainty Evaluation of Wall Interference in a Large Transonic Wind Tunnel , 2010 .

[6]  Venkit Iyer,et al.  A Wall Correction Program Based on Classical Methods for the National Transonic Facility (Solid Wall or Slotted Wall) and the 14x22-Ft Subsonic Tunnel at NASA LaRC , 2004 .

[7]  Venkit Iyer,et al.  Wall Interference Study of the NTF Slotted Tunnel Using Bodies of Revolution Wall Signature Data , 2004 .

[8]  A. Boone,et al.  Determination of the wall boundary condition of the NASA Ames 11ft transonic wind tunnel , 2001 .

[9]  S. Bosniakov,et al.  Conception of electronic wind tunnel and first results of its implementation , 2001 .

[10]  Venkit Iyer,et al.  Improvements to Wall Corrections at the NASA Langley 14 x 22-Ft Subsonic Tunnel , 2003 .

[11]  J. Quest,et al.  Numerical and experimental Investigations of Slot Flow with Respect to Wind Tunnel Wall Interference Assessment , 2004 .

[12]  John C. Vassberg,et al.  Development of a Common Research Model for Applied CFD Validation Studies , 2008 .

[13]  Patrick J. Roache,et al.  Verification and Validation in Computational Science and Engineering , 1998 .

[14]  M. Laban,et al.  Development of CFD-based interference models for the DNW-HST transonic wind tunnel , 2006 .

[15]  A. Boone,et al.  Real-time wall interference correction system of the 12 ft pressure wind tunnel , 1998 .

[16]  Anton Gorbushin,et al.  Recent experience in improving the accuracy of wall interference corrections in TsAGI T-128 wind tunnel , 2001 .

[17]  Jürgen Quest,et al.  Going for Experimental and Numerical Unsteady Wake Analyses Combined with Wall Interference Assessment by Using the NASA CRM Model in ETW , 2013 .

[18]  Norbert Ulbrich,et al.  Direct Validation of the Wall Interference Correction System of the Ames 11-Foot Transonic Wind Tunnel , 2003 .

[19]  Edward N. Tinoco,et al.  Summary of the Fourth AIAA CFD Drag Prediction Workshop , 2010 .

[21]  M Pindzola,et al.  BOUNDARY INTERFERENCE AT SUBSONIC SPEEDS IN WIND TUNNELS WITH VENTILATED WALLS , 1969 .

[22]  Norbert Ulbrich,et al.  The Real-Time Wall Interference Correction System of the NASA Ames 12-Foot Pressure Wind Tunnel , 1998 .

[23]  S. M. Bosnyakov,et al.  TsAGI's experience in numerical simulation of flow in cryogenic wind tunnel , 2016 .

[24]  Egor Vyacheslavovich Kazhan.  STABILITY IMPROVEMENT OF GODUNOV-KOLGAN-RODIONOV TVD SCHEME BY A LOCAL IMPLICIT SMOOTHER , 2012 .

[25]  S. M. Bosnyakov,et al.  Computational tools for supporting the testing of civil aircraft configurations in wind tunnels , 2008 .

[26]  Alexander Krynytzky.  Parametric Model Size Study of Wall Interference in the Boeing Transonic Wind Tunnel Using TRANAIR , 2004 .