A 1:3 Small Scale Vehicle Model Investigation in Small Scale Wind Tunnel and Correlation with Full Vehicle Testing

2021 ◽  
Author(s):  
Rohit Chandra pauriyal ◽  
Parvej Alam Khan Majhar Khan ◽  
Rajesh Thiyagarajan
Keyword(s):  
Wind Tunnel ◽  
Model Investigation ◽  
Small Scale ◽  
Vehicle Model ◽  
Full Vehicle ◽  
Vehicle Testing

Modelling and Validation of Full Vehicle Model based on a Novel Multibody Formulation

2019 ◽  
Author(s):  
Alberto Parra ◽  
Dionisio Cagigas ◽  
Asier Zubizarreta ◽  
Antonio Joaquin Rodriguez ◽  
Pablo Prieto
Keyword(s):  
Vehicle Model ◽  
Full Vehicle ◽  
Model Based

Deposition of large particles from warehouse fire plumes—a small-scale wind tunnel model study

1998 ◽  
Vol 59 (1) ◽  
pp. 13-29 ◽  
Author(s):  
D.J. Hall ◽  
V. Kukadia ◽  
S. Walker ◽  
G.W. Marsland
Keyword(s):  
Wind Tunnel ◽  
Small Scale ◽  
Wind Tunnel Model ◽  
Fire Plumes ◽  
Model Study ◽  
Tunnel Model ◽  
Large Particles ◽  
Warehouse Fire

Wind Tunnel Tests of a Model Small-scale Horizontal-axis Wind Turbine Developed from Blade Element Momentum Theory

2021 ◽  
pp. 1-16
Author(s):  
Ojing Siram ◽  
Niranjan Sahoo ◽  
Ujjwal K. Saha
Keyword(s):  
Wind Tunnel ◽  
Horizontal Axis ◽  
Superior Performance ◽  
Speed Ratio ◽  
Small Scale ◽  
Blade Design ◽  
Horizontal Axis Wind Turbine ◽  
Blade Element Momentum Theory ◽  
Momentum Theory ◽  
Blade Element

Abstract The small-scale horizontal-axis wind turbines (SHAWTs) have emerged as the promising alternative energy resource for the off-grid electrical power generation. These turbines primarily operate at low Reynolds number, low wind speed, and low tip speed ratio conditions. Under such circumstances, the airfoil selection and blade design of a SHAWT becomes a challenging task. The present work puts forward the necessary steps starting from the aerofoil selection to the blade design and analysis by means of blade element momentum theory (BEMT) for the development of four model rotors composed of E216, SG6043, NACA63415, and NACA0012 airfoils. This analysis shows the superior performance of the model rotor with E216 airfoil in comparison to other three models. However, the subsequent wind tunnel study with the E216 model, a marginal drop in its performance due to mechanical losses has been observed.

scholarly journals Development of a Technique and Method of Testing Aircraft Models with Turboprop Engine Simulators in a Small-scale Wind Tunnel - Results of Tests

10.14311/530 ◽  
2004 ◽  
Vol 44 (2) ◽  
Author(s):  
A. V. Petrov ◽  
Y. G. Stepanov ◽  
M. V. Shmakov
Keyword(s):  
Wind Tunnel ◽  
Aerodynamic Characteristics ◽  
Static Stability ◽  
Light Transport ◽  
Experimental Investigations ◽  
Small Scale ◽  
Left Hand ◽  
Aircraft Model ◽  
Turboprop Engine ◽  
Control Surfaces

This report presents the results of experimental investigations into the interaction between the propellers (Ps) and the airframe of a twin-engine, twin-boom light transport aircraft with a Π-shaped tail. An analysis was performed of the forces and moments acting on the aircraft with rotating Ps. The main features of the methodology for windtunnel testing of an aircraft model with running Ps in TsAGI’s T-102 wind tunnel are outlined.The effect of 6-blade Ps slipstreams on the longitudinal and lateral aerodynamic characteristics as well as the effectiveness of the control surfaces was studied on the aircraft model in cruise and takeoff/landing configurations. The tests were conducted at flow velocities of V∞ = 20 to 50 m/s in the ranges of angles of attack α =  -6 to 20 deg, sideslip angles of β = -16 to 16 deg and blade loading coefficient of B 0 to 2.8. For the aircraft of unusual layout studied, an increase in blowing intensity is shown to result in decreasing longitudinal static stability and significant asymmetry of the directional stability characteristics associated with the interaction between the Ps slipstreams of the same (left-hand) rotation and the empennage.

Mono-Dispersed Water Droplet Delivery in a Small-Scale Refrigerated Wind Tunnel

2011 ◽  
Author(s):  
Kyle Hutchings ◽  
David Thompson ◽  
Stefan Jung ◽  
Dominik Raps
Keyword(s):  
Wind Tunnel ◽  
Water Droplet ◽  
Small Scale

Prehistoric Effect of the Stamping Process on the Crash Analysis of an Automobile under Frontal Impact

2013 ◽  
Vol 711 ◽  
pp. 149-154 ◽  
Author(s):  
Se Ho Kim
Keyword(s):  
Impact Load ◽  
Crash Analysis ◽  
Frontal Impact ◽  
Vehicle Model ◽  
Side Member ◽  
Frontal Crash ◽  
Full Vehicle ◽  
Load Carrying ◽  
Crash Characteristics ◽  
The Impact

In this paper, a frontal crash analysis is carried out with a full vehicle model in order to investigate the influence of stamping effects of auto-body members on the crash characteristics of the vehicle. Stamping effects are considered for load carrying members such as the front side member and the rear lower. From the analysis result considering stamping effects, it is conformed that stamping history has to be considered for longitudinal members simultaneously that transfer the impact load under the frontal impact. Comparison of simulation result with experimental one also shows that the prediction accuracy of the crash analysis is remarkably improved.

The Art and Science of Rotary Wing Data Correlation

1976 ◽  
Vol 21 (3) ◽  
pp. 2-12
Author(s):  
Jan M. Drees
Keyword(s):  
Wind Tunnel ◽  
Test Data ◽  
State Of The Art ◽  
Helicopter Rotor ◽  
Small Scale ◽  
Test Results ◽  
Free Flight ◽  
Full Scale Tests ◽  
Rotary Wing ◽  
Theoretical Analyses

This paper presents an overview of the correlation of helicopter rotor performance and loads data from various tests and analyses. Information is included from U.S. Army‐sponsored tests conducted by Bell Helicopter Company for free‐flight full‐scale tests in the NASA‐Ames 40 × 80 wind tunnel, one‐fifth scale tests in the NASA‐Langley Transonic Dynamics Tunnel, and small‐scale tests of a rotor in air. These test data are compared with each other, where appropriate, and with calculated results. Typical examples illustrate the state of the art for correlation and indicate anomalies encountered. It is concluded that a procedure using theoretical analyses to aid in interpretation and evaluation of test results is essential to developing a science of correlation.

scholarly journals Snowdrift modelling in a wind tunnel: vertical and horizontal variation of the snow flux

1998 ◽  
Vol 26 ◽  
pp. 212-216 ◽  
Author(s):  
Florence Naaim-Bouvet ◽  
Mohamed Naaim
Keyword(s):  
Wind Tunnel ◽  
Cross Section ◽  
Critical Examination ◽  
Small Scale ◽  
Geometrical Parameters ◽  
Drifting Snow ◽  
Horizontal Variation ◽  
Storm Duration ◽  
Recent Developments ◽  
Mean Wind Speed

This paper deals with the influence of the vertical and horizontal variation of Aeolian snow flux on estimations of snow-storm duration and on snowdrift patterns simulated in a wind tunnel.First of all, we shall review recent developments, including our own simulations, concerning the horizontal increase of mass flux until drifting-snow saturation has been reached.Next, after a critical examination of various snowdrift-modelling criteria, we present the results of an experiment undertaken in our wind tunnel: We studied cross-section drill-area changes behind a small-scale snow fence as a function of time for different fetches but for the same mean wind speed at the beginning of the testing section. For each fetch, we carried out vertical profiles of sand particles using image processing and we studied the geometrical parameters of the drift. We conclude dial changes in the cross-section drift area depend on the ablation length and if particle saturation is not reached, the use of a storm-duration scale leads to Overevaluation of prototype storm duration. Moreover, we point out that drift pattern vary as a function of the concentration profiles.

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