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Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This volume contains eight papers on turbomachinery covering CFD applications, detailed flow measurements on unsteady flow, new design methods and control devices, and conventional empirical ...
Theoretical Analysis of Fluid Forces on an Open-Type Centrifugal Impeller in Whirling Motion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: For turbomachines operating at supercritical shaft speed, it is important to understand the characteristics of unsteady fluid forces on the impeller that occur due to shaft vibration. The present ...
A Cavity Wake Model Based on the Viscous/Inviscid Interaction Approach and Its Application to Nonsymmetric Cavity Flows in Inducers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A cavity wake model based on the flow interaction between the viscous wake behind the cavity and external inviscid cavity flow is proposed. The conditions of interaction between viscous and ...
Pump Research and Development: Past, Present, and Future—Japanese Perspective
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The evolution of pump research and production in Japan after 1955 is surveyed. The post-war period has been divided into three stages of development with unique social and industrial characteristics: ...
Evaluation of the Dynamic Transfer Matrix of Cavitating Inducers by Means of a Simplified “Lumped-Parameter” Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper will present an analytical model for the evaluation of the pressure and flow rate oscillations in a given axial inducer test facility. The proposed reduced order model is based on ...
Influence of Flow Coefficient and Flow Structure on Rotational Cavitation in Inducer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cavitation instability is a major vibration source in turbopump inducers, and its prevention is a critical design problem in rocket-engine development. As reported by Kang et al. , (2009, “Cause ...
Theoretical Analysis of Transitional and Partial Cavity Instabilities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes a new time marching calculation of blade surface cavitation based on a linearized free streamline theory using a singularity method. In this calculation, closed cavity models ...
Unsteady Tip Leakage Vortex Cavitation Originating From the Tip Clearance of an Oscillating Hydrofoil
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Tip leakage vortex cavitations originating from the tip clearance of an oscillating hydrofoil were observed experimentally. It was found that the delay between the unsteady and the steady-state ...
Response of Backflow to Flow Rate Fluctuations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The response of backflow at the inlet of an inducer to the flow rate fluctuation is studied by using three-dimensional numerical calculations based on the k-ϵ turbulence model for the discussion ...
Rotating Choke in Cavitating Turbopump Inducer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: During the development stage of the liquid hydrogen turbopump for the main engine LE-7A of the H-IIA rocket, a new type of cavitation instability was observed. This instability occurs at lower ...