Wall Roughness Effect on Gas Dynamics in Supersonic Ejector / Aronson K. E.,Brezgin D. V. // . - 2016. - V. 1770, l. .

ISSN/EISSN:

0094-243X / нет данных

Type:

Proceedings Paper

Abstract:

The paper presents the numerical simulations results in order to figure out the influence of the wall surface roughness on gas-dynamic processes inside the supersonic ejector. For these purposes two commercial CFD-solvers (Star-CCM+ and Fluent) were used. A detailed comparative study of the built-in tools and approaches in both CFD-packages for evaluation of surface roughness effects on the logarithmic law velocity distribution inside the boundary layer is carried out. Influence of ejector surface roughness is compared with the influence of the backpressure. It is found out that either increasing the backpressure behind the ejector or increasing the surface roughness height, the appearance section of a pressure shock is displaced upstream (closer to the primary nozzle). The numerical simulations results of the ejector with rough walls in both CFD-solvers are well quantitative agreed between each other in terms of the mass flow rates and are well qualitative consistent in terms of the local flow parameters distribution. It is found out that in case of exceeding the ``critical roughness height{''} for the given geometry and boundary conditions, the ejector switches to the ``off-design{''} mode and its performance is significantly reduced.

Author keywords:

нет данных

DOI:

10.1063/1.4964029

Web of Science ID:

ISI:000392692200106

Соавторы в МНС:

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Другие поля

Поле	Значение
Editor	Fomin, V
Booktitle	INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2016)
Series	AIP Conference Proceedings
Note	18th International Conference on the Methods of Aerophysical Research (ICMAR), Perm Natl Res Polytechn Univ, Perm, RUSSIA, JUN 27-JUL 03, 2016
Organization	Natl Comm Theoret \& Appl Mech; Natl Comm Int Federat Promot Mechanism \& Machine Sci; Russian Acad Sci, Siberian Branch; Russian Acad Sci, Siberian Branch, Khristianovich Inst Theoret \& Appl Mech; Russian Acad Sci, Ural Branch, Inst Continuous Media Mech, Perm Sci Ctr; Aviadvigatel Joint Stock Co
Publisher	AMER INST PHYSICS
Address	2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Language	English
Article-Number	030087
ISBN	978-0-7354-1428-0
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	k.e.aronson@urfu.ru dvbrezgin@urfu.ru
Number-of-Cited-References	13
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	2
Doc-Delivery-Number	BG8RY