scholarly journals Experimental investigation of free jet pulsations in the wind tunnel with an open test section

2018 ◽  
Author(s):  
S. A. Baranov ◽  
N. I. Batura ◽  
G. G. Gadzhimagomedov ◽  
D. S. Sboev
Keyword(s):  
Experimental Investigation ◽  
Wind Tunnel ◽  
Test Section ◽  
Free Jet ◽  
Open Test

MIXING LAYER STRUCTURE OF A JET IN A WIND TUNNEL WITH AN OPEN TEST SECTION

2017 ◽  
Vol 48 (8) ◽  
pp. 711-722
Author(s):  
N. I. Batura ◽  
Valery Viktorovich Vozhdaev ◽  
Gadzhi Gadzhimagomaevich Gadzhimagomedov ◽  
Igor Ivanovich Lipatov
Keyword(s):  
Wind Tunnel ◽  
Test Section ◽  
Layer Structure ◽  
Mixing Layer ◽  
Open Test

scholarly journals Design of short low speed Göttingen type wind tunnel: CFD simulation

2018 ◽  
Vol 145 ◽  
pp. 03015
Author(s):  
Hardy Weisweiler ◽  
Jasmina Kojouharova ◽  
Roland Dückershoff
Keyword(s):  
Applied Sciences ◽  
Wind Tunnel ◽  
Test Section ◽  
Cfd Simulation ◽  
Test Chamber ◽  
Sectional Area ◽  
Cross Sectional ◽  
Low Speed ◽  
University Of Applied Sciences ◽  
Open Test

The paper is focused on design simulations by the means of commercial software for a low speed circuit wind tunnel with an open test section, recently built at the Department of Mechanical Engineering, Mechatronics and Materials Technology at THM University of Applied Sciences in Friedberg. The proposed wind tunnel has a test section with cross sectional area of 1 X 1 m2 and a length of 1.6 m. The maximum achievable speed is about 50 m/s with empty test section. The simulation had the target to propose and to verify various geometries - test chamber, tunnel contraction, diffuser etc. as well the tunnel corner including the vanes. In addition, the influence of the vanes number and their shape on the ventilator power needed and the flow velocity uniformity as well, have been subjects of the investigation. Also the ventilator type (rotational segment) impact on the flow pattern within the operational area has been scrutinized.

Effects of Turbulence on the Breakup of Round Liquid Jets in Gaseous Crossflow

2005 ◽  
Author(s):  
R. Sankarakrishnan ◽  
K. A. Sallam ◽  
F. W. Chambers
Keyword(s):  
Experimental Investigation ◽  
Wind Tunnel ◽  
Test Section ◽  
Drop Size ◽  
Liquid Surface ◽  
Liquid Jets ◽  
Liquid Jet ◽  
Surface Conditions ◽  
Subsonic Wind Tunnel ◽  
Primary Breakup

An experimental investigation of the effects of turbulence on primary breakup of round liquid jets subjected to gaseous crossflow is described. The paper investigates the effects of partial degrees of turbulence development in the liquid. Measurements of the properties of primary breakup were obtained using double-pulsed shadowgraphy in a subsonic wind tunnel having a test section of 0.3 m × 0.3 m × 0.6 m. Measurements included primary breakup regimes, conditions required for the onset of breakup, ligament properties along the liquid surface, drop size and velocity distributions after breakup along the liquid surface, conditions required for breakup of the liquid jet as a whole, and liquid jet trajectories.

A Theoretical Investigation of the Maximum-lift Coefficient

1935 ◽  
Vol 39 (295) ◽  
pp. 619-632
Author(s):  
TH. Von karman ◽  
Clark B. Millikan
Keyword(s):  
Experimental Investigation ◽  
Reynolds Number ◽  
Wind Tunnel ◽  
Theoretical Investigation ◽  
Lift Coefficient ◽  
Wind Tunnels ◽  
California Institute ◽  
California Institute Of Technology ◽  
Junior Author ◽  
Institute Of Technology

The problem of the maximum lift of airfoils has concerned the authors greatly since there were first discovered in the spring of 1932 serious discrepancies in this characteristic between results obtained in the wind tunnel of the Guggenheim Aeronautics Laboratory at the California Institute of Technology (GALCIT) and those reported from certain other wind tunnels. An elaborate experimental investigation by the junior author and A. L. Klein indicated that the value of CLmax for a given airfoil was strongly affected both by Reynolds number and by the degree of turbulence in the tunnel wind stream.

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