Journal ArticleDOI
Design of a variable contraction for a full-scale automotive wind tunnel
TLDR
In this article, the design of a three-dimensional contraction for a projected full-scale aero-acoustic automotive wind tunnel is described, where two interchangeable outlet sections (overall contraction ratio 5.5 and 16.3, respectively) allow either fullscale testing at a test section speed of 45 m/s or 1 4 -model-scale testing up to 75 m /s.About:
This article is published in Journal of Wind Engineering and Industrial Aerodynamics.The article was published on 1995-04-01. It has received 20 citations till now. The article focuses on the topics: Wind tunnel & Reynolds number.read more
Citations
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Journal ArticleDOI
Aerodynamic shape of transition curve for truncated mountainous terrain model in wind field simulation
TL;DR: Based on the wind tunnel contraction, a novel transition curve is proposed for modeling mountainous deep-cutting valley terrain in the wind-tunnel test or numerical simulation, and the applicability of the proposed curve in 3D wind field numerical simulation for a deepcutting valley is verified based on field measurement data as mentioned in this paper.
Journal ArticleDOI
Novel design and experimental validation of a contraction nozzle for aerodynamic measurements in a subsonic wind tunnel
María Rodríguez Lastra,Jesús Manuel Fernández Oro,Mónica Galdo Vega,Eduardo Blanco Marigorta,Carlos Santolaria Morros +4 more
TL;DR: In this article, a novel design for a contraction nozzle, based on a logarithmic profile, is presented and developed to enhance aerodynamic measurements in a low-speed wind tunnel.
Journal ArticleDOI
Numerical and Experimental Investigations of Air Flow Turbulence Characteristics in the Wind Tunnel Contraction
TL;DR: In this paper, the authors investigated the flow characteristics contraction of rectangular cross-section and found that velocity field and turbulent intensity in the area of contraction and downstream of it were observed.
Journal ArticleDOI
Parametric research on drag reduction and thermal protection of blunt-body with opposing jets of forward convergent nozzle in supersonic flows
TL;DR: In this article, an active flow control method that controls a single pressure parameter is proposed, and the formation process of the opposing jet in the convergent nozzle is considered, while the flow field structure of an opposing jet formed by a convergent manifold with different nozzle sizes is studied.
Journal ArticleDOI
Parametric research on drag reduction and thermal protection of blunt-body with opposing jets of forward convergent nozzle in supersonic flows
TL;DR: In this paper , an active flow control method that controls a single pressure parameter is proposed, and the formation process of the opposing jet in the convergent nozzle is considered, while the flow field structure of an opposing jet formed by a convergent manifold with different nozzle sizes is studied.
References
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Journal ArticleDOI
Design of Two-Dimensional Wind Tunnel Contractions
TL;DR: In this paper, a one-parameter family of wall shapes, based on two cubic arcs, was investigated in detail and the design chart parameters are the maximum wall pressure coefficients at the inlet and at the exit, which are related to the exit velocity non-uniformity as well as to separation.
Journal ArticleDOI
Boundary-Layer Considerations in the Design of Aerodynamic Contractions
TL;DR: In this paper, the authors considered boundary-layer behavior by applying the Stratford criterion for turbulent separation to numerically computed wall-pressure distributions and determined the minimum-length contraction shapes consistent with fully attached boundary layer flow.
Journal ArticleDOI
Laminarization of a turbulent boundary layer in nozzle flow.
TL;DR: Turbulent boundary layer laminarization in conical nozzle flow, measuring velocity profiles and friction coefficient was performed in this article, where the velocity profiles were measured by measuring the friction coefficient.
Journal ArticleDOI
Lower limit for the velocity fluctuation level in wind tunnels
Ulf Michel,Eberhard Froebel +1 more
TL;DR: The origins of the velocity fluctuations in the test section of a wind tunnel are discussed in this paper, where a careful design of the settling chamber to almost any desired level can reduce the amplitudes of pressure waves propagating round the tunnel circuit.
Related Papers (5)
Experimental and analytical evaluation of flow in a square-to-square wind tunnel contraction
Fuh-Min Fang,J.C. Chen,Y.T. Hong +2 more