Denghao Wu
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View article: Effect of Back Wear-Ring Clearance on the Internal Flow Noise in a Centrifugal Pump
Effect of Back Wear-Ring Clearance on the Internal Flow Noise in a Centrifugal Pump Open
To investigate the effects of clearance variations induced by back wear ring wear on internal flow and noise within centrifugal pumps at the design flow rate (Qo = 25 m3/h), a combined Computational Fluid Dynamics (CFD) and Acoustic Finite…
View article: Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor
Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor Open
This paper presents a novel adaptive twisting sliding mode control strategy combined with a speed-sensorless cascade nonlinear observer for the high-performance control of linear induction motors (LIMs). The primary objective is to achieve…
View article: Improving the energy performance of vortex pump based on whale optimization algorithm
Improving the energy performance of vortex pump based on whale optimization algorithm Open
This study introduced a multi-objective optimization framework for vortex pumps, utilizing the whale optimization algorithm (WOA) and Gaussian process regression (GPR) to enhance energy performance under various operating conditions. Initi…
View article: Effects of Mass Diffusion on Rayleigh-Taylor Instability Under A Large Gravity
Effects of Mass Diffusion on Rayleigh-Taylor Instability Under A Large Gravity Open
Rayleigh-Taylor instabilities (RTI) play an important role in the evolution of inertial confinement fusion (ICF) processes, while analytical prediction of the RTI growth rate often fails to reach an agreement with the experimental and simu…
View article: Research Progress on Gas Supply System of Proton Exchange Membrane Fuel Cells
Research Progress on Gas Supply System of Proton Exchange Membrane Fuel Cells Open
Proton exchange membrane fuel cells (PEMFCs) are attracting attention for their green, energy-saving, and high-efficiency advantages, becoming one of the future development trends of renewable energy utilization. However, there are still d…
View article: Tribological Properties of Blocky Composites with Carbon Nanotubes
Tribological Properties of Blocky Composites with Carbon Nanotubes Open
A large amount of primary energy is lost due to friction, and the study of new additive materials to improve friction performance is in line with the concept of low carbon. Carbon nanotubes (CNTs) have advantages in drag reduction and wear…
View article: Cavitation diagnosis method of centrifugal pump based on characteristic frequency and kurtosis
Cavitation diagnosis method of centrifugal pump based on characteristic frequency and kurtosis Open
Centrifugal pumps are important equipment in industrial production. At present, vibration signals are often used to diagnose cavitation in centrifugal pumps, but the vibration signals are easy to be disturbed and the fault characteristics …
View article: Study of non-constant local cavitation suppression in micro-wedge structure
Study of non-constant local cavitation suppression in micro-wedge structure Open
To alleviate the negative impacts of cavitation phenomenon on hydrodynamic machinery, such as mechanical vibration and noise, a hydrofoil model is established based on the micro-wedge structure, and numerical simulation of the hydrofoil is…
View article: Gas-liquid flow patterns visualization in a self-priming centrifugal pump
Gas-liquid flow patterns visualization in a self-priming centrifugal pump Open
The self-priming pumps are ubiquitous in gas-liquid mixtures lift and transportation areas. The fast self-priming time is a vital evaluation index for a self-priming pump. However, the bubble movement path and the bubble size distribution …
View article: Effect of V-Shaped Groove Microstructure on Blood Flow Resistance in Bionic Artificial Blood Vessels
Effect of V-Shaped Groove Microstructure on Blood Flow Resistance in Bionic Artificial Blood Vessels Open
This study aims to investigate the blood flow in bionic artificial blood vessels and to reduce the resistance to blood flow, the drag reduction characteristics of V-shaped groove drag reduction microstructures in artificial blood vessel st…
View article: Effect of the Inclined Part Length of an Inclined Blade on the Cavitation Characteristics of Vortex Pumps
Effect of the Inclined Part Length of an Inclined Blade on the Cavitation Characteristics of Vortex Pumps Open
To study the effect of the length of the second inclined section of the inclined vane on the vortex structure and pressure distribution inside a vortex pump, this paper uses a combination of numerical simulations (CFD) and experimental ver…
View article: The Estimation of Centrifugal Pump Flow Rate Based on the Power–Speed Curve Interpolation Method
The Estimation of Centrifugal Pump Flow Rate Based on the Power–Speed Curve Interpolation Method Open
During the global energy crisis, it is essential to improve the energy efficiency of pumps by adjusting the pump’s control strategy according to the operational states. However, monitoring the pump’s operational states with the help of ext…
View article: Effect of the Bionic Circular Groove Non-Smooth Structure on the Anti-Wear Performance of the Two-Vane Pump
Effect of the Bionic Circular Groove Non-Smooth Structure on the Anti-Wear Performance of the Two-Vane Pump Open
The characteristics of the material transported by the two-vane pump can cause the impeller to wear out, leading to a deterioration in hydraulic efficiency. Appropriately, the research goal of this paper is to consolidate the anti-wear per…
View article: A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance
A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance Open
The self-priming pump is a kind of centrifugal pump product with self-priming function, and the structural parameters of its reflux hole determine the performance. In order to reveal the mechanism of the self-priming process, we summarized…
View article: Influence of Bionic Circular Groove Blade Surface on Wear Performance
Influence of Bionic Circular Groove Blade Surface on Wear Performance Open
In order to improve the anti-wear performance of a double-vane self-priming centrifugal pump during two-phase flow transfer, the construction of a streamline groove structure at the outlet end of the suction side of the vane, based on the …
View article: Effect of Bionic Nonsmooth Surface Vane on the Antiwear Characteristics of Double-Vane Pump
Effect of Bionic Nonsmooth Surface Vane on the Antiwear Characteristics of Double-Vane Pump Open
In order to improve the antiwear characteristics of the double-vane self-priming pump, the surface structure of the Scapharca subcrenata was extracted and reconstructed according to bionic principles. Three types of nonsmooth surface model…
View article: LES Analysis of the Unsteady Flow Characteristics of a Centrifugal Pump Impeller
LES Analysis of the Unsteady Flow Characteristics of a Centrifugal Pump Impeller Open
Stall phenomena increase the complexity of the internal flow in centrifugal pump impellers. In order to tackle this problem, in the present work, a large eddy simulation (LES) approach is applied to determine the characteristics of these u…
View article: Influence of Diffuser Vane Number on Energy Loss of Multistage Centrifugal Pump
Influence of Diffuser Vane Number on Energy Loss of Multistage Centrifugal Pump Open
As a key component of a multistage pump, the diffuser affects the efficiency of the multistage centrifugal pump. However, the loss mechanism inside the diffuser and links between the loss mechanism and vane numbers of diffuser were still n…
View article: Dynamic Instability Analysis of a Double-Blade Centrifugal Pump
Dynamic Instability Analysis of a Double-Blade Centrifugal Pump Open
The flow instability of a double-blade centrifugal pump is more serious due to its special design feature with two blades and large flow passages. The dynamic instabilities and pressure pulsations can affect the pump performance and operat…
View article: Research Strategies to Develop Environmentally Friendly Marine Antifouling Coatings
Research Strategies to Develop Environmentally Friendly Marine Antifouling Coatings Open
There are a large number of fouling organisms in the ocean, which easily attach to the surface of ships, oil platforms and breeding facilities, corrode the surface of equipment, accelerate the aging of equipment, affect the stability and s…
View article: Probability Evaluation of Hydrodynamic Shear Damage for Fish Passing through Jet Fish Pumps
Probability Evaluation of Hydrodynamic Shear Damage for Fish Passing through Jet Fish Pumps Open
Jet fish pump is an efficient tool to transport fish. Due to the operation principle, shear flow cannot be avoided in jet fish pumps. Shear flow is a potential risk for fish damage in the fluid machinery. Therefore, it is valuable to evalu…
View article: Technical Characteristics and Wear-Resistant Mechanism of Nano Coatings: A Review
Technical Characteristics and Wear-Resistant Mechanism of Nano Coatings: A Review Open
Nano-coating has been a hot issue in recent years. It has good volume effect and surface effect, and can effectively improve the mechanical properties, corrosion resistance and wear resistance of the coatings. It is important to improve th…
View article: Research Progress on the Collaborative Drag Reduction Effect of Polymers and Surfactants
Research Progress on the Collaborative Drag Reduction Effect of Polymers and Surfactants Open
Polymer additives and surfactants as drag reduction agents have been widely used in the field of fluid drag reduction. Polymer additives can reduce drag effectively with only a small amount, but they degrade easily. Surfactants have an ant…
View article: Mechanical properties and application analysis of spider silk bionic material
Mechanical properties and application analysis of spider silk bionic material Open
Spider silk is a kind of natural biomaterial with superior performance. Its mechanical properties and biocompatibility are incomparable with those of other natural and artificial materials. This article first summarizes the structure and t…