PREDICTION OF A TURBULENT REACTING DUCT FLOW WITH SIGNIFICANT RADIATION

1971 ◽  
Vol 32 (C5) ◽  
pp. C5b-27-C5b-31 ◽  
Author(s):  
F. C. Lockwood ◽  
D. B. Spalding
Keyword(s):  
Duct Flow

PIV MEASUREMENTS OF DUCT FLOW WITH A DETACHED TURBULATOR ARRAY

2001 ◽  
Vol 8 (2-3) ◽  
pp. 11
Author(s):  
Tong-Miin Liou ◽  
Shun-Nan Liou ◽  
K. H. Chang
Keyword(s):  
Duct Flow ◽  
Piv Measurements

Predicting S-duct flow using a composite algebraic stress model

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 327-335
Author(s):  
T. Jongen ◽  
G. Mompean ◽  
T. B. Gatski
Keyword(s):  
Stress Model ◽  
Duct Flow ◽  
Algebraic Stress Model

Thermal Performance Analysis of a Rectangular Longitudinal Finned Solar Air Heater With Semicircular Absorber Plate

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Satyender Singh ◽  
Prashant Dhiman
Keyword(s):  
Thermal Performance ◽  
Numerical Solutions ◽  
Solar Air Heater ◽  
Duct Flow ◽  
Balance Equations ◽  
Absorber Plate ◽  
Ansys Fluent ◽  
Air Heater ◽  
Glass Cover ◽  
Good Agreement

Thermal performance of a single-pass single-glass cover solar air heater consisting of semicircular absorber plate finned with rectangular longitudinal fins is investigated. The analysis is carried out for different hydraulic diameters, which were obtained by varying the diameter of the duct from 0.3–0.5 m. One to five numbers of fins are considered. Reynolds number ranges from 1600–4300. Analytical solutions for energy balance equations of different elements and duct flow of the solar air heater are presented; results are compared with finite-volume methodology based numerical solutions obtained from ansys fluent commercial software, and a fairly good agreement is achieved. Moreover, analysis is extended to check the effect of double-glass cover and the recycle of the exiting air. Results revealed that the use of double-glass cover and recycle operation improves the thermal performance of solar air heater.

Time varying control of magnetohydrodynamic duct flow

2021 ◽  
Author(s):  
Cansu Evcin ◽  
Ömür Uğur ◽  
Münevver Tezer-Sezgin
Keyword(s):  
Time Varying ◽  
Duct Flow

scholarly journals Decay of turbulence in a liquid metal duct flow with transverse magnetic field

2019 ◽  
Vol 867 ◽  
pp. 661-690 ◽  
Author(s):  
Oleg Zikanov ◽  
Dmitry Krasnov ◽  
Thomas Boeck ◽  
Semion Sukoriansky
Keyword(s):  
Magnetic Field ◽  
Transverse Magnetic Field ◽  
Large Scale ◽  
High Amplitude ◽  
Transverse Magnetic ◽  
Duct Flow ◽  
Velocity Fluctuations ◽  
Turbulence Decay ◽  
The Moment ◽  
Typical Length

Decay of honeycomb-generated turbulence in a duct with a static transverse magnetic field is studied via direct numerical simulations. The simulations follow the revealing experimental study of Sukoriansky et al. (Exp. Fluids, vol. 4 (1), 1986, pp. 11–16), in particular the paradoxical observation of high-amplitude velocity fluctuations, which exist in the downstream portion of the flow when the strong transverse magnetic field is imposed in the entire duct including the honeycomb exit, but not in other configurations. It is shown that the fluctuations are caused by the large-scale quasi-two-dimensional structures forming in the flow at the initial stages of the decay and surviving the magnetic suppression. Statistical turbulence properties, such as the energy decay curves, two-point correlations and typical length scales are computed. The study demonstrates that turbulence decay in the presence of a magnetic field is a complex phenomenon critically depending on the state of the flow at the moment the field is introduced.

scholarly journals Delayed Detached-Eddy Simulation and Particle Image Velocimetry Investigation of S-Duct Flow Distortion

AIAA Journal ◽  
2017 ◽  
Vol 55 (6) ◽  
pp. 1893-1908 ◽  
Author(s):  
Daniel Gil-Prieto ◽  
David G. MacManus ◽  
Pavlos K. Zachos ◽  
Geoffrey Tanguy ◽  
François Wilson ◽  
...  
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Duct Flow ◽  
Detached Eddy Simulation ◽  
Flow Distortion ◽  
Eddy Simulation ◽  
Delayed Detached Eddy Simulation ◽  
Image Velocimetry
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