scholarly journals Numerical investigation of swirl flow inside a supersonic nozzle

2012 ◽  
Author(s):  
E. Eslamian ◽  
H. Shirvani ◽  
A. Shirvani
Keyword(s):  
Numerical Investigation ◽  
Supersonic Nozzle ◽  
Swirl Flow

Numerical Investigation of Film Cooling Effectiveness Including Shockwave Interaction in a Supersonic Nozzle Flow

2022 ◽  
Author(s):  
Manoj Prabakar Sargunaraj ◽  
Andres Torres ◽  
Jose Garduna ◽  
Marcel Otto ◽  
Jayanta S. Kapat ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Film Cooling ◽  
Supersonic Nozzle ◽  
Nozzle Flow ◽  
Cooling Effectiveness ◽  
Film Cooling Effectiveness

Impact of Swirl Flow on Combustor Liner Heat Transfer and Cooling: A Numerical Investigation With Hybrid RANS-LES Models

2015 ◽  
Author(s):  
L. Mazzei ◽  
A. Andreini ◽  
B. Facchini ◽  
F. Turrini
Keyword(s):  
Heat Transfer ◽  
Flow Field ◽  
Numerical Investigation ◽  
Film Cooling ◽  
Swirling Flow ◽  
Cooling System ◽  
Swirl Flow ◽  
Opening Angle ◽  
Lean Burn ◽  
Combustor Liner

This paper reports the main findings of a numerical investigation aimed at characterizing the flow field and the wall heat transfer resulting from the interaction of a swirling flow provided by lean burn injectors and a slot cooling system, which generates film cooling in the first part of the combustor liner. In order to overcome some well-known limitations of RANS approach, e.g. the underestimation of mixing, the simulations were performed with hybrid RANS-LES models, namely SAS-SST and DES-SST, which are proving to be a viable approach to resolve the main structures of the flow field. The numerical results were compared to experimental data obtained on a non-reactive three sector planar rig developed in the context of the EU project LEMCOTEC. The analysis of the flow field has highlighted a generally good agreement against PIV measurements, especially for the SAS-SST model, whereas DES-SST returns some discrepancies in the opening angle of the swirling flow, altering the location of the corner vortex. Also the assessment in terms of Nu/Nu0 distribution confirms the overall accuracy of SAS-SST, where a constant over-prediction in the magnitude of the heat transfer is shown by DES-SST, even though potential improvements with mesh refinement are pointed out.

Experimental and numerical investigation of flow separation in a supersonic nozzle

2008 ◽  
Vol 29 (4) ◽  
pp. 377-389 ◽  
Author(s):  
Slavica Ristić ◽  
Mirko Kozić ◽  
Mirjana Puharić
Keyword(s):  
Numerical Investigation ◽  
Flow Separation ◽  
Supersonic Nozzle
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