HYDRODYNAMIC SPEED REDUCERS FOR SHIP DRIVE. PART A. THE GENERAL PROBLEM OF HYDRODYNAMIC SPEED REDUCERS FOR SHIPS WITH PARTICULAR ATTENTION TO INCREASED RATIOS OF TRANSMISSION. PART B. EXPERIMENTAL INVESTIGATION AND THEORETICAL ANALYSIS OF AN AXIAL FLOW PRIMARY STAGE FOR HYDRODYNAMIC SPEED REDUCERS

1953 ◽  
Author(s):  
G. F. Wislicenus ◽  
W. G. Rose
Keyword(s):  
Experimental Investigation ◽  
Theoretical Analysis ◽  
General Problem ◽  
Axial Flow ◽  
Primary Stage ◽  
Transmission Part

Experimental Investigation of Gas-Particle Flow Trajectories and Velocities in an Axial Flow Turbine Stage

1972 ◽  
Author(s):  
W. Tabakoff ◽  
A. Hamed ◽  
M. F. Hussein
Keyword(s):  
Experimental Investigation ◽  
Theoretical Analysis ◽  
Pressure Distribution ◽  
High Speed ◽  
Axial Flow ◽  
Particle Flow ◽  
Blade Surface ◽  
Turbine Stage ◽  
Theory And Experiment ◽  
Good Agreement

This paper describes the results from an investigation of the gas-particle flow trajectories, velocities and pressure distribution in an axial flow turbine stage. A gas-particle flow cascade tunnel and high-speed photographic techniques were used to conduct the experimental investigation. The pressure distribution on the blade surface was measured and compared with the theoretical analysis, the results exhibiting good agreement between the developed theory and experiment.

Theoretische Analyse eines neuen Loslagerkonzepts*/Theoretical analysis of a new floating bearing - The simulated operational behavior of FRB bearings in comparison to reference bearings

2015 ◽  
Vol 105 (05) ◽  
pp. 285-290
Author(s):  
C. Brecher ◽  
M. Fey ◽  
J. Falker
Keyword(s):  
Experimental Investigation ◽  
Theoretical Analysis ◽  
High Speed ◽  
Contact Point ◽  
Ball Bearings ◽  
Roller Bearings ◽  
Cylindrical Roller ◽  
Bearing System

Das Floating-Roller-Ball (FRB)-Lager ist ein Konzept für Radiallager als Loslager für Hochgeschwindigkeits-Motorspindeln, das die Vorteile von Zylinderrollenlagern und angestellten Mehrpunktlagern in einer neuen Wälzkörpergeometrie kombiniert. Zur Auslegung des ersten Prototyps wurde mithilfe eines Berechnungstools das theoretische Betriebsverhalten untersucht. Die Berechnungsergebnisse liefern Randbedingungen als Grundlage zur experimentellen Untersuchung des Lagerkonzepts.   Floating roller ball bearings provide a new floating bearing system for high-speed motor spindles, combining the advantages of both cylindrical roller bearings and elastically mounted multi-contact point bearings in a new roller geometry. To design the first prototype, the operational behavior of the bearing system was analyzed theoretically by a new calculation tool. The results provide the basis for the experimental investigation of the bearing concept.

Inlet Skew and the Growth of Secondary Losses and Vorticity in a Turbine Cascade

1989 ◽  
Author(s):  
J. A. Walsh ◽  
D. G. Gregory-Smith
Keyword(s):  
Experimental Investigation ◽  
Large Scale ◽  
Transverse Velocity ◽  
Axial Flow ◽  
Turbine Cascade ◽  
Streamwise Vorticity ◽  
Loss Prediction

This paper presents results of an experimental investigation into the effects of inlet skew on the flowfield of a large scale axial flow turbine cascade. The results are presented in terms of the development of the streamwise vorticity since, in classical terms, the streamwise vorticity generates the transverse velocity components that cause the generation of the secondary losses. Inlet skew is shown to have a profound effect on the distribution and magnitude of the generated losses. A number of correlations for the secondary losses are compared with the measured values and it is shown that the correlations are not adequate for accurate loss prediction purposes.

Research on Hydroforming of Bimetallic Lined Pipe

2010 ◽  
Vol 97-101 ◽  
pp. 4172-4177 ◽  
Author(s):  
Qin Zhu Chen ◽  
Xue Sheng Wang ◽  
Zheng Bian Wang
Keyword(s):  
Experimental Investigation ◽  
Theoretical Analysis ◽  
Industrial Production ◽  
New Technology ◽  
Expansion Method ◽  
Technical Characteristic ◽  
Stress And Strain ◽  
Hydroforming Process ◽  
Outer Pipe

A new kind of hydraulic expansion device for bimetallic CRA-lined pipe has been researched and developed, as well as its operational principal and technical characteristic were introduced. The stress and strain in the liner and outer pipe during the hydroforming process have been analyzed theoretically and the mechanism of hydraulic expansion method is studied, and the final forming pressure formula has been obtained. The theoretical analysis is verified by experimental investigation, the results indicate that the new technology is feasible and can be applied in industrial production.

scholarly journals Recess Vane Passive Stall Control

1992 ◽  
Author(s):  
M. Ziabasharhagh ◽  
A. B. McKenzie ◽  
R. L. Elder
Keyword(s):  
Experimental Investigation ◽  
Axial Flow ◽  
Operating Efficiency ◽  
Stall Margin ◽  
Casing Treatment ◽  
Inlet Distortion ◽  
Stall Margin Improvement ◽  
Stage Characteristic ◽  
Stall Control

An experimental investigation has been carried out on the influence of a vaned recessed casing treatment on the stall margin improvement of axial flow fans with different hub to tip ratio, with and without inlet distortion. The inlet distortion tests were conducted on a 0.5 hub to tip ratio fan and significant increases in the flow range with only small drops in operating efficiency were observed. The clean flow tests were conducted on higher hub to tip ratio fans (0.7 and 0.9). In each case the stage characteristic was compared with the results obtained with a solid casing. Significant increases in the flow range, with only modest or no loss in operating efficiency, were observed for optimum configurations at both diameter ratios.

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