A Check Tool for the Half-Model Balance of the Cryogenic Wind Tunnel Cologne DNW-KKK

2013 ◽  
Author(s):  
Junnai Zhai
Keyword(s):  
Wind Tunnel ◽  
Cryogenic Wind Tunnel

Characteristic model-based adaptive control for cryogenic wind tunnels

2020 ◽  
pp. 014233122096065
Author(s):  
Chenhui Yu ◽  
Fei Liao ◽  
Haibo Ji ◽  
Wenhua Wu
Keyword(s):  
Reynolds Number ◽  
Wind Tunnel ◽  
Flow Field ◽  
Control Problem ◽  
Mimo System ◽  
Adaptive Controller ◽  
Characteristic Model ◽  
Model Based ◽  
Field Control ◽  
Cryogenic Wind Tunnel

With the increasing requirement of Reynolds number simulation in wind tunnel tests, the cryogenic wind tunnel is considered as a feasible method to realize high Reynolds number. Characteristic model-based adaptive controller design method is introduced to flow field control problem of the cryogenic wind tunnel. A class of nonlinear multi-input multi-output (MIMO) system is given for theoretical research that is related to flow field control of the cryogenic wind tunnel. The characteristic model in the form of second-order time-varying difference equations is provided to represent the system. A characteristic model-based adaptive controller is also designed correspondingly. The stability analysis of the closed loop system composed of the characteristic model or the exact discrete-time model and the proposed controller is investigated respectively. Numerical simulation is presented to illustrate the effectiveness of this control method. The modeling and control problem based on characteristic model method for a class of MIMO system are studied and first applied to the cryogenic wind tunnel control field.

Preliminary Test Results of NDA Cryogenic Wind Tunnel and Its System

1988 ◽  
Author(s):  
Yutaka Yamaguchi ◽  
Hideki Kaba ◽  
Shizuyuki Yoshida ◽  
Nobumitsu Kuribayashi
Keyword(s):  
Wind Tunnel ◽  
Preliminary Test ◽  
Test Results ◽  
Cryogenic Wind Tunnel

Boundary-Layer Transition Detection in a Cryogenic Wind Tunnel Using Luminescent Paint

1997 ◽  
Vol 34 (1) ◽  
pp. 34-42 ◽  
Author(s):  
Keisuke Asai ◽  
Hiroshi Kanda ◽  
Tetsuya Kunimasu ◽  
Tianshu Liu ◽  
John P. Sullivan
Keyword(s):  
Boundary Layer ◽  
Wind Tunnel ◽  
Boundary Layer Transition ◽  
Layer Transition ◽  
Cryogenic Wind Tunnel

Preliminary airfoil testing experience in the NDA cryogenic wind tunnel

2002 ◽  
Author(s):  
Y. Yamaguchi ◽  
Y. Nakauchi ◽  
M. Yorozu ◽  
T. Saito
Keyword(s):  
Wind Tunnel ◽  
Cryogenic Wind Tunnel
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