scholarly journals Three Dimensional Flow Analysis in a Radial Turbine Rotor. 2nd Report, Flow Field near Tip Clearance and Turbine Efficiency.

1999 ◽  
Vol 65 (636) ◽  
pp. 2710-2717 ◽  
Author(s):  
Naoki TSUCHIYA ◽  
Haruo YOSHIKI
Keyword(s):  
Flow Field ◽  
Flow Analysis ◽  
Three Dimensional ◽  
Turbine Rotor ◽  
Tip Clearance ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Turbine Efficiency ◽  
Radial Turbine

Prediction of Surface Roughness and Incidence Effects on Turbine Performance

1993 ◽  
Author(s):  
R. J. Boyle
Keyword(s):  
Surface Roughness ◽  
Flow Analysis ◽  
Three Dimensional ◽  
Navier Stokes ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Turbine Efficiency ◽  
Turbine Performance ◽  
Wide Range ◽  
Loss Models

The use of a Navier-Stokes analysis to predict the change in turbine efficiency resulting from changes in blade surface roughness or incidence flow angles is discussed. The results of a midspan Navier-Stokes analysis are combined with those from a quasi-three-dimensional flow analysis code to predict turbine performance. A quasi-three-dimensional flow analysis code was used to determine turbine performance over a range of incidence flow angles. This analysis was done for a number of incidence loss models. The change in loss due to changes in incidence flows computed from the Navier-Stokes analysis is compared with the results obtained using the empirical loss models. The Navier-Stokes analysis was also used to determine the effects of surface roughness using a mixing length turbulence model, which incorporated the roughness height. The validity of the approach used was verified by comparisons with experimental data for a turbine with both smooth and rough blades tested over a wide range of blade incidence flow angles.

The Measurement of Three-Dimensional Flow Field in an Axial Flow Fan Using PDA

2002 ◽  
Author(s):  
Zhaohui Du ◽  
Wanlai Lin ◽  
Xiaocheng Zhu ◽  
Yan Zhao
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Axial Flow ◽  
Flow Fields ◽  
Tip Clearance ◽  
Measurement Technology ◽  
Particle Dynamic ◽  
Axial Flow Fan ◽  
Three Dimensional Flow ◽  
Dimensional Flow

In this paper, a three-color dual-beam PDA (Particle Dynamic Analyzer) system (made by DANTEC Measurement Technology) is used to measure the three-dimensional velocity of an axial flow fan. Due to the geometrical limit of fan rotor, non-orthogonal velocity components are measured first, from which the orthogonal three-dimensional components of the velocity field are computed through transformation equations. The detailed flow fields at 15 axial locations upstream, inside and at the exit of the rotor are measured, respectively. On each cross section perpendicular to the rotating axis, the flow field measurement at 15 different radial locations from 50% of the blade span to the region inside the tip clearance (between the tip blade and the casing wall) are taken. The experimental technique is described, and the three dimensional flow fields (including the tip clearance flow) are presented and analyzed.

scholarly journals Three-Dimensional Flow Analysis over Canard Configuration in Turbulence Model

2022 ◽  
pp. 112-117
Author(s):  
L V S S Lohitasya Varun ◽  
Y. D. Dwivedi
Keyword(s):  
Flow Field ◽  
Real Time ◽  
Turbulence Model ◽  
Flow Analysis ◽  
Three Dimensional ◽  
Model Solution ◽  
Field Analysis ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Flow Field Analysis

The canard has been seen as an ominous aerodynamic object for ages this paper is to shed some more light on the effects of canard configuration on the aircraft’s wings. This flow-field analysis is thus being done using a turbulence model solution to take into the effects of a real-time environment where the vortices from the canard are captured more accurately. The analysis has been done meticulously and made to be as error-free as possible under the guidance of Dr. Yagya Dutta Dwivedi.

Prediction of Surface Roughness and Incidence Effects on Turbine Performance

1994 ◽  
Vol 116 (4) ◽  
pp. 745-751 ◽  
Author(s):  
R. J. Boyle
Keyword(s):  
Surface Roughness ◽  
Flow Analysis ◽  
Three Dimensional ◽  
Navier Stokes ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Turbine Efficiency ◽  
Turbine Performance ◽  
Wide Range ◽  
Loss Models

The use of a Navier–Stokes analysis to predict the change in turbine efficiency resulting from changes in blade surface roughness or incidence flow angles is discussed. The results of a midspan Navier–Stokes analysis are combined with those from a quasi-three-dimensional flow analysis code to predict turbine performance. A quasi-three-dimensional flow analysis code was used to determine turbine performance over a range of incidence flow angles. This analysis was done for a number of incidence loss models. The change in loss due to changes in incidence flow computed from the Navier–Stokes analysis is compared with the results obtained using the empirical loss models. The Navier–Stokes analysis was also used to determine the effects of surface roughness using a mixing length turbulence model, which incorporated the roughness height. The validity of the approach used was verified by comparisons with experimental data for a turbine with both smooth and rough blades tested over a wide range of blade incidence flow angles.

Simulation of Three-Dimensional Flow Field Around Unconventional Bridge Piers

2017 ◽  
Author(s):  
Adnan Ismael ◽  
Hamid Hussein ◽  
Mohammed Tareq ◽  
Mustafa Gunal
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Bridge Piers ◽  
Three Dimensional Flow ◽  
Dimensional Flow
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