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RISEffect of Trailing Edge Modification of a Mixed Flow Pump
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern pumps are designed to guarantee a sufficiently large operating range or to satisfy the performance requirements relative to more than one operating point. This study applies trailingedge (TE) modification method ...
Three Dimensional Coupling Analysis of Flow and Thermal Performance of a Mechanical Seal
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To accurately obtain the flow and temperature field in mechanical seals and investigate the key influencing factors, a numerical analysis of flow and heat transfer in a contact mechanical seal with highsealing pressure, ...
Transient Characteristics of a Closed Loop Pipe System During Pump Stopping Periods
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to study the transient characteristics of a closedloop pipe system with room temperature water, experiments were carried out based on different pump stopping periods from rate rotational speed to zero. Various ...
Effects of Blade Pressure Side Modification on Unsteady Pressure Pulsation and Flow Structures in a Centrifugal Pump
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, the effects of modifying the blade pressure side (PS) on unsteady pressure pulsation and flow structures in a low specific speed centrifugal pump are carried out by experimental and computational fluid ...
Improve of Unsteady Pressure Pulsation Based on Jet–Wake Suppression for a Low Specific Centrifugal Pump
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, three impellers with different blade pressure side (PS) profiles are designed and the influence on the hydraulic and dynamic performance of a low specific speed centrifugal pump is investigated by numerical ...
Computational Fluid Dynamics-Based Pump Redesign to Improve Efficiency and Decrease Unsteady Radial Forces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, a double volute centrifugal pump with relative low efficiency and high vibration is redesigned to improve the efficiency and reduce the unsteady radial forces with the aid of unsteady computational fluid ...
Numerical Simulation of a Check Valve Closure Induced by Pump Shutdown
Publisher: American Society of Civil Engineers
Abstract: High pressure surges induced by the sudden closure of check valves can cause severe damage to mechanical and hydraulic facilities. A three-dimensional unsteady numerical simulation of a dual disc check valve closure induced ...
Cavitation Characterization of Fluid Machinery Based on Cyclostationary Analysis: Part 2—Cavity Development Evaluation by Modulation Intensity
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the previous paper, the high potential of the spectral correlation to identify cavity type has been demonstrated. This paper dedicates its efforts to cavity development evaluation and shows how the proposed modulation ...
Hydrodynamic Design and Pulsation Evolution in an Axial-Flow Pump Based on Control Mechanism of Flow-Induced Excitation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The physical mechanism, evolution process, and control method on pulsation caused by flow-induced excitation vortex in an axial flow pump are elaborated by numerical calculation and experiment. The mechanism formulation ...
Study on the Four-Quadrant Homologous Characteristic and Two-Phase Flow Head Degradation of a Reactor Coolant Pump
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper studies the four-quadrant homologous characteristic and analyzes the gas–liquid two-phase flow head degradation of ACP100 reactor coolant pump. The theoretical basis and the operating conditions of the pump's ...