study of effect of rotor vanes to rotor-casing dimensions on

CiteSeerX — Effect of Different Vane Angles on Rotor

It is found that the shaft work output is optimum for some typical values of rotor to casing diameter ratios at a particular vane angle (i.e. no. of vanes). In this study, when casing diameter is considered 100 mm, and rotor to casing diameter ratios are kept 0.70 to 0.55, the average maximum power is obtained to the order of 4.95 kW (6.6 HP) which is sufficient to run motorbikes.

Numerical investigation of the effect of airfoil thickness on

Effect of airfoil thickness on onset of dynamic stall is investigated using large eddy simulations at chord-based Reynolds number of 200 000. Four symmetric NACA airfoils of thickness-to-chord ratios of 9 %, 12 %, 15 % and 18 % are studied. The three-dimensional

Leakage Flow and Heat Transfer Characteristics on Turbine Blade Tip and Casing

Casing: Effect of Unsteady Stator-Rotor Interactions Rahman, M. H., Kim, S. I., Hassan, I. (2014). Tip Leakage Flow and Heat Transfer on Turbine Stage Tip and Casing: Effect of Unsteady Stator-Rotor Interactions. International Journal of Computational

Numerical investigation of the effect of airfoil thickness on

Effect of airfoil thickness on onset of dynamic stall is investigated using large eddy simulations at chord-based Reynolds number of 200 000. Four symmetric NACA airfoils of thickness-to-chord ratios of 9 %, 12 %, 15 % and 18 % are studied. The three-dimensional

AERODYNAMIC TIP DESENSITIZATION OF AN AXIAL TURBINE ROTOR USING TIP PLATFORM EXTENSIONS

height between the cylindrical hub surface and the outer casing is 0.123 m. The rotor has an axial chord c of 0.129 m at the tip. The flow exiting the rotor passes through an annular row of exit guide vanes, located approximatelythree rotor chordsdown

The Properties of Isolated and Coupled Savonius Rotors

not possess overlapping rotor vanes, as originally suggested by Savonius. Pender (1979) has shown that the presence of an intervane vortex lowers the efficiency of the rotor by some 6%. (See, however, the comments by Clayton (1979)). The

EFFECT OF COWLING ON A CYCLONIC VERTICAL AXIS WIND

the study neither considered the effect of the number of blades nor measured the rotor torque and angular velocity which are important parameters to determine the possible power generation by a wind turbine. Therefore, the main purpose of this study is to

FUNDAMENTALS OF FLUID MECHANICS Chapter 12 Pumps and

14 Example 12.1 Drag from Pressure and Shear Stress Distributions zThe rotor shown in Fig. E12.1a rotates at a constant angular velocity of ω= 100 rad/s. Although the fluid initially approaches the rotor in an axial direction, the flow across the blades is primarily

Study of effect of rotor vanes to rotor

Study of effect of rotor vanes to rotor-casing dimensions on performance of a zero pollution vane type novel air turbine Bharat Raj Singh1* and Onkar Singh2 1Department of Mechanical Engineering, SMS Institute of Technology, Lucknow-227125, Uttar Pradesh

Effect of Guide Vanes on Flow and Vibroacoustic in an

An effect of guide-vane numbers on pressure fluctuations and structural vibroacoustics induced by unsteady flow is performed by a hybrid numerical method. A 3D flow field is simulated in axial-flow pump with four impeller blades, in which three diffuser models with 5, 7, and 9 vanes are devised to match, respectively. A full scale structural vibroacoustics coupled model is solved using LMS

EFFECTS OF HOT STREAK AND PHANTOM COOLING ON HEAT

the vanes affect the deposition patterns. •The relative position of H.S. w.r.t. to the vanes affect particulate content of the flow downstream of the vanes. •The effect of H.S. on deposition is strongly related to the Stokes number. Conclusions of Preliminary Study

Advances in Mechanical Engineering 2017, Vol. 9(7) 1–15 Influence

2016/8/25The rotor sensitivity to the fluid flow uniformity in terms of thermodynamic parameters, speed, and to the optimum absolute angle of attack has given rise to more considerations to the spiral casing of the mixed inflow turbine. The turbine with inlet nozzle set

Casing Diameter Ratios on Performance of a Vaned Type

A mathematical model is presented here for studying the influence of rotor / casing dimensions with respect to different injection angles. The effect of expansion and steady fluid flow action of high pressure air have been considered and analyzed here.

Preliminary Assessment of Variable Speed Power Turbine Technology on Civil Tiltrotor

Because of its strong effect on gearbox weight and on both rotor and engine efficiency, rotor speed was chosen as the reference design variable for comparing design trades. Major study assumptions are presented and discussed.

EFFECTS OF HOT STREAK AND PHANTOM COOLING ON HEAT

the vanes affect the deposition patterns. •The relative position of H.S. w.r.t. to the vanes affect particulate content of the flow downstream of the vanes. •The effect of H.S. on deposition is strongly related to the Stokes number. Conclusions of Preliminary Study

PAPER OPEN ACCESS A study of counter

In this study, middle vanes were installed between two rotors in order to achieve a further improvement of the performance of the counter-rotating impulse turbine, and the effect of middle vanes on turbine performance was investigated by using the computation i s.

The Properties of Isolated and Coupled Savonius Rotors

not possess overlapping rotor vanes, as originally suggested by Savonius. Pender (1979) has shown that the presence of an intervane vortex lowers the efficiency of the rotor by some 6%. (See, however, the comments by Clayton (1979)). The

FLUID MECHANICS : DESIGN STEPS OF FRANCIS TURBINE

Main components of the francis turbine are sprial case,stay vanes,guide vanes,turbine runner and draft tube. The dimensions of these parts are dependent Practically all dimensions, features and characteristics of the desired turbine can be expressed as a function of the specific speed.

FLUID MECHANICS : DESIGN STEPS OF FRANCIS TURBINE

Main components of the francis turbine are sprial case,stay vanes,guide vanes,turbine runner and draft tube. The dimensions of these parts are dependent Practically all dimensions, features and characteristics of the desired turbine can be expressed as a function of the specific speed.

TOP 22 REASONS BEHIND STEAM TURBINE VIBRATION

The effect of thermal bending of a rotor on the casing can also be determined. When the casing top is hotter then the bottom, the casing tends to bend down if the temperature gradient is constant from the top of the casing to the bottom and along its lengths, then the maximum bending stress occurs mid- casing vertically and between the casing support horizontally.

FUNDAMENTALS OF FLUID MECHANICS Chapter 12 Pumps and

14 Example 12.1 Drag from Pressure and Shear Stress Distributions zThe rotor shown in Fig. E12.1a rotates at a constant angular velocity of ω= 100 rad/s. Although the fluid initially approaches the rotor in an axial direction, the flow across the blades is primarily

Effect of Different Vane Angle on Compression Ratio and Shaft

invention stator, rotor, front and rear cover and shaft vanes has been used. 5 vanes are pivoted at 72oon shaft which is fixed on rotor. The vanes act as a barrier dividing the chambers in to an expansion compression region. In it compressed air

Casing Diameter Ratios on Performance of a Vaned Type

A mathematical model is presented here for studying the influence of rotor / casing dimensions with respect to different injection angles. The effect of expansion and steady fluid flow action of high pressure air have been considered and analyzed here.

The Properties of Isolated and Coupled Savonius Rotors

not possess overlapping rotor vanes, as originally suggested by Savonius. Pender (1979) has shown that the presence of an intervane vortex lowers the efficiency of the rotor by some 6%. (See, however, the comments by Clayton (1979)). The

AERODYNAMIC TIP DESENSITIZATION OF AN AXIAL TURBINE ROTOR USING TIP PLATFORM EXTENSIONS

height between the cylindrical hub surface and the outer casing is 0.123 m. The rotor has an axial chord c of 0.129 m at the tip. The flow exiting the rotor passes through an annular row of exit guide vanes, located approximatelythree rotor chordsdown

TOP 22 REASONS BEHIND STEAM TURBINE VIBRATION

The effect of thermal bending of a rotor on the casing can also be determined. When the casing top is hotter then the bottom, the casing tends to bend down if the temperature gradient is constant from the top of the casing to the bottom and along its lengths, then the maximum bending stress occurs mid- casing vertically and between the casing support horizontally.

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