Xianwu Luo
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View article: Characteristics and dynamics of compressible multiscale cavitating flows inside a nozzle, with special emphasis on compressible effects
Characteristics and dynamics of compressible multiscale cavitating flows inside a nozzle, with special emphasis on compressible effects Open
Unsteady cavitating flow usually contains various vapor structures with different length scales and significant fluid compressibility, which poses great challenges to numerical simulation. In this work, we propose a compressible Eulerian–L…
View article: Effect of Injector Needle Tip Shape on Jet Flow for Pelton Turbine
Effect of Injector Needle Tip Shape on Jet Flow for Pelton Turbine Open
The Pelton turbine has been widely applied for the advantages of its simple structure, flexible mass flow rate, wide range of applicable heads and high efficiency. The nozzle and needle are a core part of the Pelton turbine injector. In th…
View article: Performance improvement of turbo energy recovery device in desalination using flow field simulation and uniform design experiment
Performance improvement of turbo energy recovery device in desalination using flow field simulation and uniform design experiment Open
As the core equipment of seawater desalination, the turbine energy recovery device (TERD) exerts a crucial impact on the energy consumption of desalination system. The study aims to improve the performance of TERD mainly using the numerica…
View article: Investigation of mechanical performance for tricuspid valve stent in different compression modes
Investigation of mechanical performance for tricuspid valve stent in different compression modes Open
The tricuspid acting as a one-way valve between the right atrium and the right ventricle of the human heart, is very important for the blood circulation system. The regurgitation will be induced if the tricuspid cannot close normally, lead…
View article: Design Improvement for Interventional Blood Pumps Based on Flow Analysis
Design Improvement for Interventional Blood Pumps Based on Flow Analysis Open
Interventional blood pumps serve as a crucial component for temporary mechanical circulatory support in the treatment of heart failure, specifically designed to improve blood circulation recovery and survival rate in patients undergoing tr…
View article: Pressure pulsation and radial force characteristics of dual-side impellers for the turbine energy recovery integrated machine
Pressure pulsation and radial force characteristics of dual-side impellers for the turbine energy recovery integrated machine Open
The inherent instabilities within the structure of the turbine-type energy recovery integrated machine (TT-ERIM) have the potential to compromise its smoothness and longevity, which could result in malfunctions. The dynamics of the dual-si…
View article: Internal flow analysis and design optimization of a membrane oxygenator
Internal flow analysis and design optimization of a membrane oxygenator Open
The membrane oxygenator is an essential component in the Extracorporeal Membrane Oxygenation (ECMO) system to offer temporary support to the respiratory system. This study aims to optimize the hemodynamic performance and reduce the thrombo…
View article: Optimization of impeller parameters for hydrodynamic turbine based on multi-objective orthogonal test design
Optimization of impeller parameters for hydrodynamic turbine based on multi-objective orthogonal test design Open
The inherent instabilities within the structure of turbine-type energy recovery integrated machine (TT-ERIM) can compromise its smoothness and longevity, potentially leading to malfunctions. The dynamics of the dual-side impeller of TT-ERI…
View article: Trigger mechanism for a singing cavitating tip vortex
Trigger mechanism for a singing cavitating tip vortex Open
The discrete tone radiated from tip vortex cavitation (TVC), known as 'vortex singing', was recognized in 1989, but its triggering remains unclear for over thirty years. In this study, the desinent cavitation number and viscous correction …
View article: Investigation on suitable design parameters for hydrodynamic bearing of LVADs
Investigation on suitable design parameters for hydrodynamic bearing of LVADs Open
Left ventricular assist devices (LVADs) are crucial and helpful to support heart function for patients with heart failure. For the LVAD with hydrodynamic bearings, high reliability of the bearing is necessary to support the rotor and achie…
View article: Numerical investigation on cavitation performance for centrifugal pumps with different impeller inlet geometry
Numerical investigation on cavitation performance for centrifugal pumps with different impeller inlet geometry Open
In the centrifugal pump, cavitation often leads to the noise and pressure pulsation, further affects the performance and operation of the pump. Therefore, it is essential to improve cavitation performance at the stage of pump design. In th…
View article: Impeller optimization using a machine learning-based algorithm with dynamic sampling method and flow analysis for an axial flow pump
Impeller optimization using a machine learning-based algorithm with dynamic sampling method and flow analysis for an axial flow pump Open
Design optimization for widely used axial flow pumps presents a formidable challenge due to the significant impact of numerous parameters associated with impeller geometry on hydraulic performance. The expansive design space raises concern…
View article: Investigation of radial force in a high-speed miniature pump
Investigation of radial force in a high-speed miniature pump Open
A high-speed miniature pump design is put forth for utilization in the aerospace sector, where the pump’s reliability holds critical importance under microgravity operational conditions. This study focuses on a dynamic bearing-equipped min…
View article: Effects of repetitive transcranial magnetic stimulation combined with cognitive training on cognitive function in patients with Alzheimer’s disease: a systematic review and meta-analysis
Effects of repetitive transcranial magnetic stimulation combined with cognitive training on cognitive function in patients with Alzheimer’s disease: a systematic review and meta-analysis Open
Purpose To evaluate the effect of repetitive transcranial magnetic stimulation (rTMS) paired with cognitive training on cognitive function in Alzheimer’s Disease (AD) patients. Methods PubMed, The Cochrane Library, Embase, CINAHL Complete …
View article: The effect of receptive music therapy on older adults with mild cognitive impairment and depression: a randomized controlled trial
The effect of receptive music therapy on older adults with mild cognitive impairment and depression: a randomized controlled trial Open
This study aims to evaluate the effects of a receptive music therapy intervention on cognitive functions and depressive symptoms in older adults with MCI. A randomized controlled trial was conducted in Wuhan, China. Eighty older adults, ov…
View article: Cavitating turbulent flow investigation for the twisted NACA66 hydrofoil using a PANS model with helicity modification
Cavitating turbulent flow investigation for the twisted NACA66 hydrofoil using a PANS model with helicity modification Open
In the present paper, the unsteady cavitating turbulent flow over the twisted NACA66 hydrofoil has been investigated based on an SST k-ω partially averaged Navier-Stokes (MSST PANS) model i.e., NMSST PANS model, where the production term o…
View article: Effects of cognitive stimulation therapy on patients with dementia: An umbrella review of systematic reviews and meta-analyses
Effects of cognitive stimulation therapy on patients with dementia: An umbrella review of systematic reviews and meta-analyses Open
The protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO) database (CRD42022364259).
View article: Mesh dependence analysis for simulating unsteady cavitation around a plane convex hydrofoil
Mesh dependence analysis for simulating unsteady cavitation around a plane convex hydrofoil Open
The mesh significantly influences the quality of the numerical results in computational fluid dynamics (CFD) problems due to its correlation with turbulence models. In the present paper a structured mesh was generated using Gmsh and two se…
View article: Airfoil optimization using a machine learning-based optimization algorithm
Airfoil optimization using a machine learning-based optimization algorithm Open
For the design of wind turbines, airfoil optimization is widely required as the operation efficiency of wind turbines is closely dependent on the airfoil aerodynamic performance, where the accuracy of the optimization method is of great im…
View article: Cavitating flow investigation in low specific speed axial flow waterjet pumps
Cavitating flow investigation in low specific speed axial flow waterjet pumps Open
In this paper, the cavitating flow in low specific speed axial flow waterjet pumps are treated at different cavitation conditions. In order to analyze the cavitating turbulent flow comprehensively, three axial flow waterjet pumps with the …
View article: The development of a high-speed miniature pump with dynamic bearing
The development of a high-speed miniature pump with dynamic bearing Open
A high-speed miniature pump is proposed for the application in aerospace area, where high efficiency and reliability are expected for the pump under the microgravity operation condition. In this paper, a miniature centrifugal pump with dyn…
View article: Simplified simulation of a small Pelton turbine using OpenFOAM
Simplified simulation of a small Pelton turbine using OpenFOAM Open
In Ecuador, the implementation of hydroelectric plants has had remarkable growth in the energy sector due to its high efficiency, low environmental impact and opportunities to generate employment. One of the sectors with the greatest benef…
View article: Numerical study of flow behavior in a cavitation tunnel using RANS with Scale-Adaptive Simulation (SAS) turbulence model in an OpenFOAM framework
Numerical study of flow behavior in a cavitation tunnel using RANS with Scale-Adaptive Simulation (SAS) turbulence model in an OpenFOAM framework Open
The present paper focuses on the study of flow through a cavitation Venturi tunnel. Motivated by the results obtained in the studies of “Simultaneous observation of cavitation structures and cavitation erosion” and “Combined numerical and …
View article: Scale adaptive simulation of unsteady cavitation flow around a plane convex hydrofoil with a semi-cylindrical obstacle
Scale adaptive simulation of unsteady cavitation flow around a plane convex hydrofoil with a semi-cylindrical obstacle Open
The present study focuses on the numerical simulation of unsteady cavitating flow around a plane-convex hydrofoil with a semi-cylindrical obstacle, which is based on the cavitation-erosion experiment perform at LMH-EPFL using the vortex ca…