Thrust coefficient
A New Empirical Relationship between Thrust Coefficient and Induction Factor for the Turbulent Windmill State
... A review of several textbooks on wind turbine theory revealed that no one has addressed the nu- merical discontinuity problem associated with the Glauert empirical relationship (Lock et al. [1926], Glauert [1926]) ...
12
Numerical Study of the Hydrodynamic Performance of Two Wiggling Hydrofoils in Diagonal Arrangement
... the thrust coefficient and the propulsive ef- ficiency for the downstream hydrofoil is higher than that for the upstream hy- drofoil when the longitudinal spacing is smaller than the body length (D x < ...
8
Numerical simulation of turbulent compressible flows in a C-D nozzle with different divergence angles
... In the current study the supersonic flow inside a 2Dconverging-diverging nozzle and its exhaust plumes simulated numerically with three different turbulence models and the results were compared with the numerical results ...
8
Improving the prediction of pressure gradient field in wind farm numerical simulation method, WAKEFARM
... The shape of the wake has a significant influence on the induced velocities at the rotor. The helical wake convects, distorts its shape, expands due to the continuity equation. Apart from this, roll up of wake also takes ...
122
Experimental Investigation and Performance Simulation of Kit Horizontal Axis Wind Turbine
... power coefficient and the thrust coefficient for a range of axial induction factor have been evaluated and compared for different blades pitch ...power coefficient obtained is about ...
8
Towards practical dynamic induction control of wind farms: analysis of optimally controlled wind-farm boundary layers and sinusoidal induction control of first-row turbines
... complex thrust coefficients in the other rows, it is worth noting that based on the current dataset no statistically significant correlations between the thrust coef- ficients of different turbines could be ...
17
Evaluation of the swirl characteristics of a tidal stream turbine wake
... constant rad/s constant radm2 s1 constant m2 s1 power coefficient torque coefficient thrust coefficient turbine diameter m axial flux of angular momentum kgm2 s2 axial flux of linear mom[r] ...
17
Article Monin-Obukhov similarity theory for modeling of wind turbine wakes under atmospheric stable conditions: breakdown and modifications
... RSME of the wake deficit at hub height under stable conditions: Proposed-CT stands for proposed model using AD based on the thrust coefficient and Proposed-z0 stands for the proposed mod[r] ...
23
On The Use of Non uniform inflow Model for Aerodynamics Analysis Helicopter Rotor Blade in the Forward Flight
... average thrust coefficient. This average thrust coefficient, of course, would not have the same value as it used in the beginning calculation to determine the average inflow ratio according to ...
11
The lifting paddlewheel : a non buoyant wheel enabling a high speed wheeled amphibious craft to run on the water surface
... BLADE CHORD M} VELOCITY RATIO AT CAVITY INTRUSION CI} LIFT COEFFICIENT INPUT VALUE OF CONST THRUST COEFFICIENT IMMERSION RATIO: DEPTH/DIAMETER LPW DIAMETER M} CALCULATED CRAFT DRAG=THRUS[r] ...
680
UAV Mission Optimization through Hybrid-Electric Propulsion.
... torque coefficient does not line up with a change in slope of the thrust coefficient, it must be attributed to a factor that would affect torque independent of ...the thrust/torque transducer ...
194
Effects of geometry variations on the performance of podded propulsors
... unit thrust and torque coefficients at moderate advance coefficient for the puller ...unit thrust coefficients, was more ...propeller thrust for low advance ...propeller thrust, whereas ...
17
Stereoscopic particle image velocimetry measurements of the three dimensional flow field of a descending autorotating mahogany seed (Swietenia macrophylla)
... show that axis of rotation, rotation speed and angle of attack during translation are of great importance in the force development during each stroke. Sane and Dickinson (Sane and Dickinson, 2002) characterized the ...
14
Stability impact on wake development in moderately complex terrain
... Two approaches to data selection have been used to assess the wakes of the group of turbines: wind speed filtering; and power filtering. In both cases the range has been selected to give an approximately constant ...
10
Propulsive performance of biologically inspired flapping foils at high Reynolds numbers
... average thrust coefficients and efficiency measurements are recorded over a range of kinematic flapping amplitudes and ...maximum thrust coefficient of ...the thrust generally increases with ...
6
CFD Analysis of a Propeller Flow and Cavitation
... When the operating pressure was lowered below the vapor pressure of surrounding liquid it simulates cavitating condition. In this condition two phases, water and water vapour are considered in simulations with Fluent ...
8
Analysing fibre composite designs for high-solidity ducted tidal turbine blades
... the thrust coefficient, a negatively proportional affiliation, as illustrated in Fig. 6. As depicted, the cored blades undergo higher deflection as a result of the hydrodynamic flow due to the ...
8
Developing and Testing an Anguilliform Robot Swimming with Theoretically High Hydrodynamic Efficiency
... nor thrust is maximized but sideways forces are ...the thrust occurs near the end of the tail, correcting these findings that the entire body produces some form of ...
235
Development of Mathematical Model and Stability Analysis for UAH
... rotor thrust, tail rotor thrust and flapping angles (Control rotor flapping and Main rotor flapping) are ...and thrust equations, there are four control inputs: three inputs on main rotor and one ...
10
Examining the Influence of Safety Management in the Personal Spaceflight Industry
... Appendix 6 Classification of Failure Condition Systems Total Loss of Function with warning Power plant thrust Power plant thrust Power plant thrust Comment Function Inadvertent in-flight[r] ...
316