A5091014388- Hydraulic and Pneumatic Systems
- Cavitation Phenomena in Pumps
- Refrigeration and Air Conditioning Technologies
- Oil and Gas Production Techniques
- Hydraulic flow and structures
- Vibration and Dynamic Analysis
- Coal Combustion and Slurry Processing
- Mechanical Failure Analysis and Simulation
- Cyclone Separators and Fluid Dynamics
- Engineering Diagnostics and Reliability
- Water Systems and Optimization
- Tribology and Lubrication Engineering
- Advanced Power Generation Technologies
Yangzhou University
2023-2024
The hydraulic performance of a high-speed submersible axial flow pump is investigated to reduce its energy consumption. A more efficient and stable optimization method that combines parametric design, computational fluid dynamics, computer algorithm proposed. main aim broaden the high-efficiency operating zone, so average efficiency under multiple conditions optimized while considering rotor–stator matching. design-of-experiments radial-basis-function neural network are combined form...
Loading distribution significantly affects the flow field in impeller channel, but research on effects of different loading forms performance mixed-flow pumps is relatively scarce. In this study, three typical pump models, namely front-loading model (FLM), middle-loading (MLM), and back-loading (BLM), were designed by changing at shroud using inverse design method. The energy losses within models analyzed quantitatively visually entropy generation results show that front-loading,...
The high-speed coolant pump is a critical component in battery energy storage systems, responsible for circulating heat transfer fluid and enabling efficient thermal exchange. This study investigates the effect of blade number (Z = 4–9) on pump's performance internal flow characteristics through experimental numerical methods. Results show that as increases, head efficiency initially rise then decline, with Z 6, 7, 8 achieving comparable at 1.0Qd. While changes minimally affect disk,...
Multi-stage centrifugal pumps with floating impellers provide a convenient means of adjustment to meet diverse head requirements. These utilize sealing gaskets minimize leakage losses and restrict impeller axial motion. However, the impact gasket breakage on hydraulic performance internal flow remains uncertain. To investigate this, novel dynamic mesh simulation method is proposed enable simultaneous motion rotation impeller. Validation numerical simulations experiments performed. Transient...
The high-speed coolant pump facilitates thermal regulation in electric vehicle components, including batteries and motors, by circulating an ethylene glycol solution. This commonly used fluid exhibits a notable negative correlation with temperature terms of viscosity. Numerical simulations investigate the transient dynamics operating at 6000 rpm, driving flow various temperatures. A test rig is established, performance evaluated under different conditions. numerical temperatures align well...
The effectiveness of the inverse design method has been widely proven in previous studies, but research on effect different vortex designs performance mixed flow pumps is relatively scarce. In this paper, performances models I1 and I2, which were designed with free compound designs, respectively, are compared to study energy characteristics operational stability pumps. results show that efficiency at 0.8Qdes, 1.0Qdes, 1.2Qdes improved by 0.54%, 0.95%, 5.91%, design, velocity pressure...
The shaft-type tubular pumping station has the remarkable characteristics of a large flow rate and high efficiency. It can realize functions irrigation, pumping, drainage through generating conditions considering tides. Moreover, it is widely used in plain area eastern China tidal along marine region. Due to different topological features airfoil impeller, energy evolution during remain unclear. entropy generation theory was introduced numerically simulate pattern channel, straight channel...
Abstract Centrifugal pumps with multiple stages and floating impellers provide a convenient option for easy adjustment, boasting advantages such as head adjustment efficient transfer of axial thrust from the impeller to casing. These utilize sealing gaskets reduce leakage control movement impeller. Nonetheless, influence oscillation non-oscillation conditions on losses internal flow characteristics remains uncertain. To explore these phenomena, numerical simulation methods were employed,...
Abstract To investigate the internal flow characteristics of an automotive electronic coolant pump, numerical simulations were performed utilizing ANSYS CFX commercial software suite. The study delved into velocity distribution, pressure pulsation intensity characteristics, and entropy generation pump under varying operational conditions. findings revealed that with increase in rate, within also escalated. Concurrently, separation at trailing edge blade diminished, while surface Notably,...
Abstract Adjusting the flow rate of an electronic coolant pump (ECP) over a wide range can cause significant internal pressure fluctuations, leading to vibration and noise. This study uses numerical simulation compare fluctuations at backflow orifice within impeller ECP various rates. The creates periodic disturbances in inlet region. As increases, axial influence on decreases, reducing amplitude by up 7.9%. characteristic frequencies include blade passing frequency its first harmonic....