Airframe noise source diagnostics of a large-scale semi-span model in DNW-NWB and experimental investigation of wing element modification for noise suppression

2014 ◽  
Author(s):  
Victor F. Kopiev ◽  
Mikhail Y. Zaytsev ◽  
Ivan V. Belyaev ◽  
Anton R. Gorbushin ◽  
Ivan L. Chernyshev ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Large Scale ◽  
Noise Suppression ◽  
Noise Source ◽  
Airframe Noise

Inlet Skew and the Growth of Secondary Losses and Vorticity in a Turbine Cascade

1989 ◽  
Author(s):  
J. A. Walsh ◽  
D. G. Gregory-Smith
Keyword(s):  
Experimental Investigation ◽  
Large Scale ◽  
Transverse Velocity ◽  
Axial Flow ◽  
Turbine Cascade ◽  
Streamwise Vorticity ◽  
Loss Prediction

This paper presents results of an experimental investigation into the effects of inlet skew on the flowfield of a large scale axial flow turbine cascade. The results are presented in terms of the development of the streamwise vorticity since, in classical terms, the streamwise vorticity generates the transverse velocity components that cause the generation of the secondary losses. Inlet skew is shown to have a profound effect on the distribution and magnitude of the generated losses. A number of correlations for the secondary losses are compared with the measured values and it is shown that the correlations are not adequate for accurate loss prediction purposes.

scholarly journals Large-scale experimental investigation of the installation of suction caissons in silt sand

2016 ◽  
Vol 60 ◽  
pp. 109-120 ◽  
Author(s):  
Fei Chen ◽  
Jijian Lian ◽  
Haijun Wang ◽  
Fang Liu ◽  
Hongzhen Wang ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Large Scale ◽  
Suction Caissons

Experimental investigation of a large-scale paste-cooled MHD channel

2000 ◽  
Vol 38 (4) ◽  
pp. 643-649
Author(s):  
N. M. Sergeenko ◽  
A. G. Blokh ◽  
A. V. Pisakin ◽  
B. G. Tkachenko ◽  
V. A. Zeigarnik ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Large Scale ◽  
Mhd Channel

Experimental Investigation of Flow Development in Large-Scale Bubble Columns in the Churn-Turbulent Regime

2016 ◽  
Vol 55 (11) ◽  
pp. 3125-3130 ◽  
Author(s):  
Xiaoping Guan ◽  
Ning Yang ◽  
Zhaoqi Li ◽  
Lijun Wang ◽  
Youwei Cheng ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Large Scale ◽  
Bubble Columns ◽  
Turbulent Regime ◽  
Flow Development

scholarly journals Experimental investigation of large-scale flow structures in an aircraft cabin mock-up

2020 ◽  
Vol 184 ◽  
pp. 107224 ◽  
Author(s):  
Yongzhi Zhang ◽  
Jiayu Li ◽  
Mingxin Liu ◽  
Junjie Liu ◽  
Congcong Wang
Keyword(s):  
Experimental Investigation ◽  
Large Scale ◽  
Flow Structures ◽  
Aircraft Cabin ◽  
Large Scale Flow

scholarly journals Large-scale experimental investigation of a low-cost PVC ‘sand-wich’ (PVC-s) seismic isolation for developing countries

2020 ◽  
Vol 36 (4) ◽  
pp. 1886-1911 ◽  
Author(s):  
Anastasios Tsiavos ◽  
Anastasios Sextos ◽  
Andreas Stavridis ◽  
Matt Dietz ◽  
Luiza Dihoru ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Developing Countries ◽  
Ground Motion ◽  
Seismic Isolation ◽  
Large Scale ◽  
Low Cost ◽  
Seismic Energy ◽  
Earthquake Ground Motion ◽  
Isolation System ◽  
Seismically Isolated

This study presents a large-scale experimental investigation on the seismic performance of an innovative, low-cost seismic isolation system for developing countries. It is based on the beneficial effect of the encapsulation of sand grains between two PVC surfaces on the initiation of sliding and the dissipation of seismic energy between the surfaces. A three-times scaled-down, idealized, seismically isolated model of a prototype single-story structure located in Nepal is subjected to an ensemble of recorded earthquake ground motion excitations. The experimentally derived response of the seismically isolated structure is compared with the response of the corresponding fixed-base structure. This system is part of a wider hybrid design approach where the structure is designed to resist the seismic forces at the design acceleration level. The seismic isolation system sets an upper bound to the response of the structure for ground motion excitations exceeding the design level.

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