A computational technique for high enthalpy shock tube and shock tunnel flow simulation

Shock Waves ◽  
1998 ◽  
Vol 8 (4) ◽  
pp. 203-214 ◽  
Author(s):  
Y. Sheng ◽  
J.P. Sislian ◽  
J.J. Liu
Keyword(s):  
Shock Tube ◽  
Flow Simulation ◽  
Shock Tunnel ◽  
Computational Technique ◽  
High Enthalpy

Free-flight measurement technique in the free-piston high-enthalpy shock tunnel

2014 ◽  
Vol 85 (4) ◽  
pp. 045112 ◽  
Author(s):  
H. Tanno ◽  
T. Komuro ◽  
K. Sato ◽  
K. Fujita ◽  
S. J. Laurence
Keyword(s):  
Measurement Technique ◽  
Shock Tunnel ◽  
Free Flight ◽  
Free Piston ◽  
High Enthalpy ◽  
Flight Measurement ◽  
High Enthalpy Shock Tunnel

Testing methodologies in the DLR High Enthalpy Shock Tunnel HEG

1998 ◽  
Author(s):  
W. Beck ◽  
G. Eitelberg ◽  
O. Trinks ◽  
M. Wollenhaupt
Keyword(s):  
Shock Tunnel ◽  
High Enthalpy ◽  
High Enthalpy Shock Tunnel

Aerodynamic Drag Measurement in a High-Enthalpy Shock Tunnel

2018 ◽  
Author(s):  
Yunpeng Wang ◽  
Zonglin Jiang ◽  
Honghui Teng
Keyword(s):  
Natural Frequencies ◽  
Aerodynamic Drag ◽  
Aerodynamic Force ◽  
Mechanical Vibration ◽  
Low Frequency ◽  
Shock Tunnel ◽  
Test Time ◽  
Test Duration ◽  
Flow State ◽  
High Enthalpy

Shock tunnels create very high temperature and pressure in the nozzle plenum and flight velocities up to Mach 20 can be simulated for aerodynamic testing of chemically reacting flows. However, this application is limited due to milliseconds of its test duration (generally 500 μs–20 ms). For the force test in the conventional hypersonic shock tunnel, because of the instantaneous flowfield and the short test time [1–4], the mechanical vibration of the model-balance-support (MBS) system occurs and cannot be damped during a shock tunnel run. The inertial forces lead to low frequency vibrations of the model and its motion cannot be addressed through digital filtering. This implies restriction on the model’s size and mass as its natural frequencies are inversely proportional the length scale of the model. As to the MBS system, sometimes, the lowest natural frequency of 1 kHz is required for the test time of typically 5 ms in order to get better measurement results [2]. The higher the natural frequencies, the better the justification for the neglected acceleration compensation. However, that is very harsh conditions to design a high-stiffness MBS structure, particularly a drag balance. Therefore, it is very hard to carried out the aerodynamic force test using traditional wind tunnel balances in the shock tunnel, though its test flow state with the high-enthalpy is closer to the real flight condition.

The high enthalpy shock tunnel in Goettingen

1992 ◽  
Author(s):  
G. EITELBERG ◽  
T. MCINTYRE ◽  
W. BECK ◽  
J. LACEY
Keyword(s):  
Shock Tunnel ◽  
High Enthalpy ◽  
High Enthalpy Shock Tunnel

Effects of Shock-Tube Cleanliness on Slender-Body Hypersonic Instability and Transition Studies at High-Enthalpy

2015 ◽  
Author(s):  
Nick J. Parziale ◽  
Joseph S. Jewell ◽  
Ivett A. Leyva ◽  
Joseph Shepherd ◽  
Hans Hornung
Keyword(s):  
Shock Tube ◽  
Slender Body ◽  
High Enthalpy ◽  
Transition Studies
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