Development of a Closed Loop, Full Scale Automotive Climatic Wind Tunnel

2000 ◽  
Author(s):  
S. A. A. Abdul Ghani ◽  
A. Aroussi ◽  
E. Rice
Keyword(s):  
Wind Tunnel ◽  
Closed Loop ◽  
Full Scale ◽  
Climatic Wind Tunnel

A Closed Loop Full-Scale Automotive Climatic Wind Tunnel for Vehicle Environment Simulation

2000 ◽  
Author(s):  
S. A. A. Abdul Ghani ◽  
A. Aroussi ◽  
E. Rice
Keyword(s):  
Wind Tunnel ◽  
Closed Loop ◽  
Cfd Simulation ◽  
Fluid Dynamic ◽  
Full Scale ◽  
Cold Weather ◽  
Test Bed ◽  
Climatic Environment ◽  
Heat Loading ◽  
Climatic Wind Tunnel

Abstract This paper describes the simulation of vehicle natural climatic environment in a closed loop full-scale automotive climatic wind tunnel. The tunnel simulates wind, rain, and temperature for several road conditions. It generates under controlled heat loading, wind speeds of up to 50kph with different approach boundary conditions, rainfalls from drizzle to cloudburst and road inclines up to 15° in any direction. The design and optimization process of the tunnel functions is outlined and examples of its use in vehicle development are given. The size constraint and the need for a compact design are important features of the tunnel. The tunnel provides an important test bed for close scrutiny of the relationship between rain ingress, vehicle speed, road condition, heat loading and vehicle geometry. The tunnel can also be used to study vehicle thermal management, vehicle thermal comfort, engine cold starting, and wipers efficiency in severe cold weather. Computational Fluid Dynamic (CFD) simulation is used to optimize and asses the performance of a number of key tunnel components. The resulting tunnel is approximately 9.5m in length, 9.5 m in height and 3 m in width.

Integrated Aero-Thermal Testing of a Race Car in a Full Scale Climatic Wind Tunnel

2016 ◽  
Author(s):  
Abdalla Abdel-Rahman ◽  
Martin Agelin-Chaab ◽  
Gary Elfstrom ◽  
John Komar
Keyword(s):  
Wind Tunnel ◽  
Full Scale ◽  
Thermal Testing ◽  
Race Car ◽  
Climatic Wind Tunnel

Wind Tunnel to Full Scale Mapping of Winds and Loads for Launch-Vehicle Ground Wind Loads

2021 ◽  
Author(s):  
Thomas G. Ivanco ◽  
Donald F. Keller ◽  
Jennifer L. Pinkerton
Keyword(s):  
Wind Tunnel ◽  
Launch Vehicle ◽  
Full Scale ◽  
Wind Loads

Characterization of wind-induced pressure on membrane roofs based on full-scale wind tunnel testing

2021 ◽  
Vol 235 ◽  
pp. 112101
Author(s):  
Johnny Estephan ◽  
Changda Feng ◽  
Arindam Gan Chowdhury ◽  
Mauricio Chavez ◽  
Appupillai Baskaran ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Full Scale ◽  
Wind Tunnel Testing ◽  
Tunnel Testing

A New Method of Modeling Underexpanded Exhaust Plumes for Wind Tunnel Aerodynamic Testing

1989 ◽  
Vol 111 (4) ◽  
pp. 748-754
Author(s):  
V. Salemann ◽  
J. M. Williams
Keyword(s):  
Wind Tunnel ◽  
Free Stream ◽  
Dynamic Pressure ◽  
Pressure Ratio ◽  
Area Ratio ◽  
Full Scale ◽  
New Method ◽  
Thrust Coefficient ◽  
Model Scale ◽  
Exhaust Plumes

A new method for modeling hot underexpanded exhaust plumes with cold model scale plumes in aerodynamic wind tunnel testing has been developed. The method is applicable to aeropropulsion testing where significant interaction between the exhaust and the free stream and aftbody may be present. The technique scales the model and nozzle external geometry, including the nozzle exit area, matches the model jet to free-stream dynamic pressure ratio to full-scale jet to free-stream dynamic pressure ratio, and matches the model thrust coefficient to full-scale thrust coefficient. The technique does not require scaling of the internal nozzle geometry. A generalized method of characteristic computer code was used to predict the plume shapes of a hot (γ = 1.2) half-scale nozzle of area ratio 3.2 and of a cold (γ = 1.4) model scale nozzle of area ratio 1.3, whose pressure ratio and area ratio were selected to satisfy the above criteria and other testing requirements. The plume shapes showed good agreement. Code validity was checked by comparing code results for cold air exhausting into a quiescent atmosphere to pilot surveys and shadowgraphs of model nozzle plumes taken in a static facility.

Developing Cyber Infrastructure and a Model Climatic Wind Tunnel Based on the PNRPU High-Performance Computational Complex

2020 ◽  
pp. 336-350
Author(s):  
Danila S. Maksimov ◽  
Vladimir Ya. Modorskii ◽  
Grigory F. Masich ◽  
Stanislav L. Kalyulin ◽  
Anton O. Mikryukov ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
High Performance ◽  
Climatic Wind Tunnel ◽  
Cyber Infrastructure
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