Haxter S. Experimental evaluation of prediction models for coherence length and phase velocity of pressure fluctuations at flight conditions: Diss. … Dr.-Ing. / Deutsches Zentrum für Luft- und Raumfahrt, Institut für Aerodynamik und Strömungstechnik, Göttingen. - Köln: DLR, 2017. - viii, 112 p.: ill., tab. - (Forschungsbericht; 2017-57). - Res. also Germ. - Bibliogr.: p.97-104. - ISSN 1434-8454 Шифр:(Pr 1120/2017-57) 02  Место хранения:   02 | Отделение ГПНТБ СО РАН | Новосибирск

Оглавление / Contents

1 Introduction ................................................. 1 1.1 Objective und Outline of this Work ...................... 1 1.2 State of the Art - Flight Test Array Measurements ....... 3 1.3 State of the Art - Boundary Layer Phase Velocity Characteristics from Noisy Wind Tunnel Measurements ..... 6 1.4 Restrictions on Using Flight Test Data .................. 9 2 Coherence of Surface Pressure: Flight Test Evaluation ....... 11 2.1 Models for Comparison: Coherence Length ................ 11 2.2 Experimental Setup ..................................... 18 2.3 Data Processing ........................................ 28 2.4 Data Quality ........................................... 34 2.5 Results ................................................ 42 3 Phase Velocity of Surface Pressure: Wind Tunnel Test Evaluation .................................................. 51 3.1 Experimental Setup ..................................... 51 3.2 Data Processing and Methods ............................ 55 3.3 Existing phase velocity prediction models .............. 58 3.4 Results ................................................ 60 4 Discussion .................................................. 75 4.1 Coherence Evaluation ................................... 75 4.2 Phase Evaluation ....................................... 78 5 Summary ..................................................... 85 5.1 Coherence Evaluation ................................... 85 5.2 Phase Evaluation ....................................... 86 5.3 Conclusion ............................................. 88 6 Outlook ..................................................... 89 Nomenclature ................................................... 91 Bibliography ................................................... 97 A Appendix ................................................... 105 A.l Deriving the flow angle from the coherence over the array ................................................. 105 A.2 Generation of Numerical Data .......................... 110