effect of aspect ratio on the performance of

Effect of Aspect Ratio on Aerodynamic Characteristics

2017-2-16The effect of the aspect ratio on the aerodynamic characteristics of rectangular wings is experimentally investigated at Reynolds numbers on the order of 10 4 The aerodynamic coefficients are analyzed based on visualized flowfields and theoretical results

Investigations on the Effect of Aspect Ratio Into the

The wind speed is varied from 5–10 m/s To estimate the performance of these rotors electrical loads are given with respect to different wind speeds and the power output is calculated in terms of voltage and current The results depicted an optimum aspect ratio of 0 80 which can be used to improve the performance of Savonius rotors

Influence of overlap ratio and aspect ratio on the

A strong contender for the utilization of the hydropower sources is Savonius turbine because of its good starting characteristics and simplicity in fabrication The aim of the present work is to study the effect of overlap ratio and aspect ratio on the performance of a Savonius turbine for hydrodynamic application

Effect of aspect ratio of elliptical inlet shape on

The aerodynamic characteristics of S-ducts with various inlet shapes were analyzed using a commercial computational fluid dynamics tool This study aimed to investigate the influence of the aspect ratio of inlet geometry for an RAE M 2129 S-duct The computational results were validated using experimental data from the Aircraft Research Association The performance of the S-duct was influenced

How does changing to large diameter tires affect your

In the main a lower aspect ratio (the "65" and "70" in your numbers) means that there's less time before the turning wheel actually starts to turn the tire Think about it The wheel turns the sidewall has to flex enough that it puts force on th

Effect of Aspect Ratio on the Performance of Spiral

The effect of aspect ratio on the flow field in a newly developed spiral-channel viscous micropump has been investigated An approximate 3-D analytical solution to the flow field in the lubrication limit that ignores channel curvature but accounts for finite wall-height is first developed A number of models for spiral pump with different aspect ratios are then built and analyzed using the

On the performance of high aspect ratio elements for

On the performance of high aspect ratio elements for incompressible flows S Mittal * Department of Aerospace Engineering Indian Institute of Technology Kanpur UP 208016 India Received 1 December 1998 Abstract A systematic study of the effect of high aspect ratio elements using equal-order-interpolation velocity-pressure elements for

Effect of Special Segment Aspect Ratio on Seismic

Special Truss Moment Frame (STMF) a relatively new type of seismic force resisting system dissipates energy through plastic hinge formation in a well-defined region known as special segment The aspect ratio of special segment plays an important role during dissipation of energy in terms of moment and rotation developed at the end of special segment

The effect of collector aspect ratio and fin density on

Abstract: The effect of collector aspect ratio on the thermal performance of solar air heater with plain fins on the absorber plate has been investigated theoretically With constant collector area the effect of various parameter such as air temperature rise efficiency collector efficiency factor collector heat removal factor and fin density on aspect ratio have also been investigated

Effect of aspect ratios of rutile TiO2 nanorods on

The spatial separation of reduction and oxidation reaction sites on the different facets of a semiconductor is an ideal and promising route for overall photocatalytic water splitting due to efficient charge carrier separation Rutile TiO2 has separate oxidation and reduction crystal facets and can be used to 2020 Nanoscale HOT Article Collection

The effect of aspect ratio on the performance of an

We investigated the effect of aspect ratio on energy harvesting performance and flow structure of an oscillating hydrofoil Power measurement and particle image velocimetry were performed in a water flume with a hydrofoil undergoing periodic heaving and pitching motions Aspect ratio was varied from 2 5 to 4 5 and end plates were also mounted at the hydrofoil tips in order to suppress three

The Effect of Aspect Ratio on Compressor

From these findings a low-order model is developed to model the effect of varying aspect ratio on compressor performance The last section of the paper uses this low-order model and a simple analytical model to show that to a first order the optimum aspect ratio is just a function of the loss generated by the endwalls at zero clearance and

On the performance of high aspect ratio elements for

On the performance of high aspect ratio elements for incompressible flows S Mittal * Department of Aerospace Engineering Indian Institute of Technology Kanpur UP 208016 India Received 1 December 1998 Abstract A systematic study of the effect of high aspect ratio elements using equal-order-interpolation velocity-pressure elements for

Effect of Aspect Ratio and Installation Direction on

2019-11-13Effect of Aspect Ratio and Installation Direction on Channel Flow Heat Transfer Performance under a wide Range of Reynolds Number By Shunichi Sakuragi Daisuke Torii Abstract-In recent years in the cooling technology for high-power electronic devices such as power transistors used for drive motor control of electric vehicles and hybrid

Effect of aspect ratio on photocatalytic performance

The effect of aspect ratio on photocatalytic activity of ZnO was studied through the decomposition of Methylene Blue () and established through various physico-chemical properties The high aspect ratio ZnO nanorods exhibit superior photocatalytic performance than the lower aspect ratio nanorods in terms of their degradation kinetics co

Effect of Aspect Ratio on the Performance of Spiral

The effect of aspect ratio on the flow field in a newly developed spiral-channel viscous micropump has been investigated An approximate 3-D analytical solution to the flow field in the lubrication limit that ignores channel curvature but accounts for finite wall-height is first developed A number of models for spiral pump with different aspect ratios are then built and analyzed using the

The Effect of Aspect Ratio and Fractal Dimension of the

2018-1-19The Effect of Aspect Ratio and Fractal Dimension of the Boundary on the Performance of Fractal Shaped CP Microstrip Antenna Yagateela P Rangaiah1 R V S Satyanarayana2 andPasumarthyN Rao1 * Abstract—A simple single feed circularly polarized microstrip antenna with Koch curve as boundary is presented

Design of a vertical

2014-8-2The aspect ratio of this particular wind turbine is defined as the ratio between blade length and rotor radius Since the aspect ratio variations of a vertical-axis wind turbine cause Reynolds number variations any changes in the power coefficient can also be studied to derive how aspect ratio variations affect turbine performance Using a

Effect of Aspect Ratio on the Performance of

2017-5-27The paper deals with a theoretical study concerning the effect of aspect ratio on the performance of hydrodynamic journal bearing operating under wear The aspect ratios (L/D) are considered 0 5 1 0 and 1 5 and for varying wear depth from 0 1 to 0 5 for the analysis of purpose The Reynolds equations governing the flow of lubricant in the

The Effect of Aspect Ratio on Compressor

To H-O and Miller RJ (2015) The Effect of Aspect Ratio on Compressor Performance In: ASME Turbo Expo 2015: Turbine Technical Conference and Exposition -- to -- Full text not available from this repository Abstract It is shown that the optimum aspect ratio at which max efficiency occurs is relatively low typically between 1 and 1 5

Effect of Aspect Ratio on Gurney

2017-2-16A low-speed wind-tunnel investigation has been undertaken to establish the effect of wing aspect ratio on Gurney-flap performance Characterization is accomplished using a force balance and flow visualization The Gurney-flap lift increment due to a shift in the zero-lift angle of attack was observed to scale with that of the lift-curve slope for different aspect ratios

Wake Structure and Performance of Finite Aspect

2020-3-18different from that observed for infinite/large aspect-ratio foils The simulations also allow us to investigate the effect of the foil aspect-ratio Strouhal number Reynolds number and pitch-bias on the wake topology and foil performance I Introduction

EFFECT OF OPENINGS AND ASPECT RATIO ON

2020-7-22India and nearby countries in Asia witness major earthquake in recent days and in past Although after witnessing many earthquakes in past for aesthetic purpose big window openings in wall and even whole brick wall replaced by glass can be seen in metro cities and suburban areas in cities of India Opening and aspect ratio in wall plays great role in strength and stiffness of wall and overall

Aspect Ratio: A Major Controlling Factor of Radiation

2014-6-19The effect of aspect ratio (width-to-length ratio) on overall radiation characteristics of a rectangular microstrip patch antenna is theoretically investigated with a view to develop a concrete physical insight in to the phenomenon The detailed variation of co polarized and cross polarized radiation performance as a function of aspect ratio is thoroughly presented

Effect of aspect ratio of elliptical inlet shape on

The aerodynamic characteristics of S-ducts with various inlet shapes were analyzed using a commercial computational fluid dynamics tool This study aimed to investigate the influence of the aspect ratio of inlet geometry for an RAE M 2129 S-duct The computational results were validated using experimental data from the Aircraft Research Association The performance of the S-duct was influenced

THE EFFECT OF ASPECT RATIO ON THE THERMAL

2018-12-9The Effect of Aspect Ratio on The Thermal Performance of Buildings in The Mediterranean Climate of The Gaza Strip Emirates Journal for Engineering Research Vol 20 No 2 2015 35 3 0 THE FIRST CASE: Effect of Aspect Ratio on the Incident Solar Radiation KWh/m 3 1 The Study Parameters

EFFECT OF OPENINGS AND ASPECT RATIO ON

2020-7-22India and nearby countries in Asia witness major earthquake in recent days and in past Although after witnessing many earthquakes in past for aesthetic purpose big window openings in wall and even whole brick wall replaced by glass can be seen in metro cities and suburban areas in cities of India Opening and aspect ratio in wall plays great role in strength and stiffness of wall and overall

ASPECT RATIO EFFECT ON HEAT TRANSFER IN ROTATING

2016-9-15ASPECT RATIO EFFECT ON HEAT TRANSFER IN ROTATING TWO-PASS RECTANGULAR CHANNELS WITH SMOOTH WALLS AND RIBBED WALLS A Dissertation by WEN-LUNG FU Submitted to the Office of Graduate Studies of Texas AM University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY May 2005 Major Subject: Mechanical