Estimation of the Flow Parametrs in Hypersonic Wind Tunnels

2011 ◽  
Vol 6 (2) ◽  
pp. 10-16
Author(s):  
Yuriy V. Gromyko ◽  
Anatoliy A. Maslov ◽  
Andrey A. Sidorenko ◽  
Pavel A. Polivanov ◽  
Ivan S. Tsyryulnikov
Keyword(s):  
Carbon Dioxide ◽  
Wind Tunnel ◽  
Flow Velocity ◽  
Nozzle Exit ◽  
Wind Tunnels ◽  
Experimental Measurements ◽  
Real Gas ◽  
Flow Parameters ◽  
Hypersonic Wind Tunnel ◽  
Parameters Calculation

The paper describes the algorithm of the flow parameters calculation for hypersonic wind tunnels taking into account the real gas properties using air and carbon dioxide as a working gas. The results of the experimental measurements of the flow velocity at the contoured nozzle exit in the hypersonic wind tunnel IT-302M have been carried out for verification of the algorithm

Multiple shock compression using a piston of finite weight

1960 ◽  
Vol 8 (2) ◽  
pp. 264-272 ◽  
Author(s):  
D. F. T. Winter
Keyword(s):  
Wind Tunnel ◽  
Shock Waves ◽  
Shock Compression ◽  
Compression Process ◽  
Real Gas ◽  
Hypersonic Wind Tunnel ◽  
Multiple Shock ◽  
Gas Properties

This paper describes a theory for a piston-operated compressor in which shock waves are used to heat the gas being compressed. Detailed calculations are given showing the use of such a compressor to heat air for use in a hypersonic wind tunnel. The effect of real gas properties on the compression process is included in this discussion.

The Weed Tunnel: Building an Experimental Wind Tunnel

2008 ◽  
Vol 22 (3) ◽  
pp. 549-552 ◽  
Author(s):  
Dirk V. Baker ◽  
K. Beck George
Keyword(s):  
Wind Tunnel ◽  
Flow Velocity ◽  
Community Dynamics ◽  
Modular Design ◽  
Maximum Flow ◽  
Wind Tunnels ◽  
Venturi Effect ◽  
Population And Community Dynamics ◽  
Diffuse Knapweed ◽  
Research Facilities

Dispersal is a key component of plant population and community dynamics and the spread of weeds. Although many species of economic concern disperse via tumbleweed mechanisms, our ability to estimate relevant dispersal parameters can be hindered by the lack of a controlled environment that can be provided by a wind tunnel. Established wind tunnels are typically closed-circuit, clean systems and are therefore unsuitable for biological or ecological research. We designed and constructed a wind tunnel to estimate dispersal parameters for diffuse knapweed. Our design was a tunnel that utilizes the Venturi effect to obtain maximum flow velocity while pulling, rather than pushing, air through the test section. Flow velocity was continuously variable from 0 to 8 m/s, and the tunnel was equipped with instrumentation for measuring the force exerted on plants by wind. Our modular design provided a way to effectively estimate key parameters that govern the dispersal of tumbleweeds, and was readily constructed and stored in research facilities.

DETERMINATION OF MATERIAL CATALYCITY AT HIGH TEMPERATURES IN THE VAT-104 HYPERSONIC WIND TUNNEL

2014 ◽  
Vol 45 (1) ◽  
pp. 3-20 ◽  
Author(s):  
Ivan Vladimirovich Egorov ◽  
Boris Evgen'evich Zhestkov ◽  
Vladimir Viktorovich Shvedchenko
Keyword(s):  
Wind Tunnel ◽  
High Temperatures ◽  
Hypersonic Wind Tunnel

scholarly journals An overview of X-38 Hypersonic Wind Tunnel data and comparison with numerical results

1997 ◽  
Author(s):  
Charles Campbell ◽  
Jose Caram ◽  
Scott Berry ◽  
Michael DiFulvio ◽  
Tom Horvath ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Numerical Results ◽  
Hypersonic Wind Tunnel ◽  
Wind Tunnel Data

CFD Simulation of a Supercritical Carbon Dioxide Radial-Inflow Turbine, Comparing the Results of Using Real Gas Equation of Estate and Real Gas Property File

2016 ◽  
Vol 846 ◽  
pp. 85-90 ◽  
Author(s):  
Mostafa Odabaee ◽  
Emilie Sauret ◽  
Kamel Hooman
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Cfd Simulation ◽  
Pressure Ratio ◽  
Computational Cost ◽  
Real Gas ◽  
Table Method ◽  
Radial Inflow Turbine ◽  
Solar Resource ◽  
Supercritical Carbon

The present study explores CFD analysis of a supercritical carbon dioxide (SCO2) radial-inflow turbine generating 100kW from a concentrated solar resource of 560oC with a pressure ratio of 2.2. Two methods of real gas property estimations including real gas equation of estate and real gas property (RGP) file - generating a required table from NIST REFPROP - were used. Comparing the numerical results and time consumption of both methods, it was shown that equation of states could insert a significant error in thermodynamic property prediction. Implementing the RGP table method indicated a very good agreement with NIST REFPROP while it had slightly more computational cost compared to the RGP table method.

Experimental measurements of mechanical properties of carbon dioxide hydrate-bearing sediments

2013 ◽  
Vol 46 ◽  
pp. 201-209 ◽  
Author(s):  
Weiguo Liu ◽  
Jiafei Zhao ◽  
Yuan Luo ◽  
Yongchen Song ◽  
Yanghui Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Dioxide ◽  
Experimental Measurements ◽  
Carbon Dioxide Hydrate ◽  
Hydrate Bearing Sediments
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