Visualization Study of Three-Dimensional Flows in a Turbine Cascade Endwall Region
スポンサーリンク
概要
- 論文の詳細を見る
Flow visualizations were carried out in a turbine rotor cascade with and without boundary layer fences, in order to provide an improved understanding of secondary flow and to show the fence effects. The oil flow and tuft screen methods were used. The results were supplemented by vorticity maps from hot-wire anemometry. Only a single separation saddle point was observed upstream of the blade. The distribution of passage vorticities at the exit from the cascade agreed well with the Oseen distribution under an appropriate normalization. The pressure side corner vortex started at the leading edge, while the suction side vortex began where the primary separation line of the horseshoe vortex intersected the blade suction surface. The fences, attached either to the endwalls or to the blade suction surfaces, weakened the secondary flow by trapping the pressure-side legs of the horseshoe vortices. Vortex flow structures with and without fences are illustrated.
- 一般社団法人日本機械学会の論文
- 1990-05-15
著者
-
Adachi Tsutomu
Institute Of Engineering Mechanics University Of Tsukuba
-
Adachi Tsutomu
Mitsubishi Heavy Industries Ltd. Nagasaki Research & Development Center
-
Kawai Tatsuo
Institute Of Engineering Mechanics And Systems University Of Tsukuba
-
SHINOKI Shuji
Sumitomo Electric Industries, Ltd.
-
Shinoki Shuji
Sumitomo Electric Industries Ltd.
関連論文
- UNSTEADY PRESSURE ON A CAMBERED BLADE UNDER PERIODIC GUSTS : COMPARISON WITH THE EXPERIMENTS
- Unsteady Pressure on a Cambered Blade Under Periodic Gust
- Unsteady Force on a Cambered Blade Passing Through an Oblique Wake
- THREE-DIMENSIONAL VELOCITY DISTRIBUTION BETWEEN STATOR BLADES AND UNSTEADY FORCE ON A BLADE DUE TO PASSING WAKES
- Study of the Universal Strouhal Number over the Wide Reynolds Number Flow Range : Effect of Surface Roughness
- The Effect of Sound on the Vortex-shedding from a Circular Cylinder : Acoustical Vibrations Directed along Axis of Cylinder
- Numerical Analysis of the Scavenging Flow in a Two-Stroke-Cycle Gasoline Engine
- Optimum Shape of a Flagellated Microorganism
- A Study on the Fluctuating Force acting on a Cylinder Placed in the Downstream of a Moving Cylinder
- STREAMLINES AND PATH LINES IN PERISTALTIC FLOW AT HIGH REYNOLDS NUMBERS
- Structure and Decay of Secondary Flow in the Downstream of a Cascade
- Study on the Secondary Flow in the Downstream of a Moving Blade Row in an Axial Flow Fan
- Improvement in Turbine Blade Aerodynamic Force in the Tip Region
- Visualization Study of Three-Dimensional Flows in a Turbine Cascade Endwall Region
- Secondary Flow Control and Loss Reduction in a Turbine Cascade Using Endwall Fences
- Effect of Combined Boundary Layer Fences on Turbine Secondary Flow and Losses
- Secondary Flows in Curved Ducts of Rectangular Cross-Section
- On the Force and Vortex Shedding on a Circular Cylinder from Subcritical up to Transcritical Reynolds Numbers
- Effects of Hub Ratio of Axial Flow Fan on Stator Secondary Flow
- Total acoustic power of rotational noise generated from turbomachinery
- A STUDY ON THE TWO-DIMENSIONAL SIMILAR VELOCITY DISTRIBUTION IN THE TURBULENT WAKES
- The Effect of Sound on the Rate of Heat Transfer from a Cylinder Placed Normal to an Air Stream