A5041071909- Cavitation Phenomena in Pumps
- Hydraulic and Pneumatic Systems
- Hydraulic flow and structures
- Water Systems and Optimization
- Oil and Gas Production Techniques
- Cyclone Separators and Fluid Dynamics
- Coal Combustion and Slurry Processing
- Erosion and Abrasive Machining
- Probabilistic and Robust Engineering Design
- Particle Dynamics in Fluid Flows
- Refrigeration and Air Conditioning Technologies
- Geomechanics and Mining Engineering
- Rock Mechanics and Modeling
- Advanced Thermodynamic Systems and Engines
- Engineering and Agricultural Innovations
- Fluid Dynamics and Mixing
- Brain Tumor Detection and Classification
- Pharmaceutical Practices and Patient Outcomes
- Microgrid Control and Optimization
- Nuclear Engineering Thermal-Hydraulics
- Heat transfer and supercritical fluids
- Engineering Diagnostics and Reliability
- Rocket and propulsion systems research
- Fluid Dynamics Simulations and Interactions
- Photovoltaic System Optimization Techniques
Mokpo National University
2018-2022
Kathmandu University
2016-2022
Norwegian University of Science and Technology
2019-2021
University of Toledo
2018
In recent times, optimization began to be popular in the turbomachinery field. The development of computational fluid dynamics (CFD) analysis and technology provides opportunity maximize performance hydro turbines. techniques are focused mainly on rotating components (runner guide vane) Meanwhile, fixed flow passages (stay vane, casing, draft tube) essential parts for proper uniformity suppression instabilities is an inevitable process ensure power plant safety by reduction vortex-induced...
Sediment erosion is the wear phenomenon from hard abrasive particle found in rivers. an inevitable process hydropower. It deteriorates turbine shape and structure increasing maintenance expenses. There are various methods to improve runner operate against sediment erosion. Firstly, material can be modified harder but it will costly difficult for manufacturing. Secondly, regular of needs done tedious task hinder power generation Thirdly, critical area blade surface which vulnerable need...
Jet pump contributes to transport sensitive objects of liquid single phase flow or solid-liquid two-phase flow, which has a merit very simple structure without moving body. However, the inevitable demerit cavitation occurrence in passage and phenomenon damages object. This paper presents numerical investigation improve performance an annular jet (AJP) using J-Groove. J-Groove is passive rectangular grooves installed on wall mixing zone direction entrain high pressure fluid from diffuser...
Sediment erosion is the main problem for hydropower situated in South Asia and America. Due to sediment erosion, those areas cannot operate their full potential. a significant turbomachinery associated with degradation of turbine performance. The removes material from its surface. It can cause fracture turbine, which leads an economic loss. In this paper, properties influence on have discussed. like shape, size, concentration direct erosion. numerical analysis was conducted visualize Francis...
This research aimed to establish a numerical analysis method for use in commercial CFD packages evaluate pump-turbine with different guide vane openings. Additionally, this study proposed an appropriate investigate flow characteristics. A three-dimensional steady-state Reynolds-averaged Navier-Stokes (RANS) equation was solved the internal characteristics turbine mode. combination of grid system, turbulence model, interface position, and condition is crucial effective prediction hydraulic...
Screw centrifugal pump is a non-clog type pump, which widely used for drainage and sewage control systems. The screw combines the advantages of pump. shows relatively high efficiency good solids handing capability. Based on design method, parameters impeller meridional plane shape are investigated improvement performance. shape, such as inlet outlet diameters, width, total axial length, blade angles, inclination were to examine their effects Numerical analysis was conducted determine...
The demand for pump turbines is increasing to eradicate the fluctuating, unpredictable, and delocalized energy production from wind solar. turbine design geometrical shape (diameter width ratios) are based on specific speeds. turbine's speed directly influenced hydraulic performance internal flow behavior. Besides flow, encounters S-Curve region when operating at a partial rate in mode. sensitive of turbine. At conditions, high has better characteristics than low
Segmentation of liver and tumor from abdominal Computed Tomography (CT) is important for proper planning treatment disease. Variable size, intensity overlap, complexity CT images probe a problem radiologist. These issues make accurate reliable delineation very difficult time-consuming. So, an automatic method desired beneficial. In this paper, we propose fully to segment both using array Gabor Filter (Gabor Bank(GB)) Machine Learning (ML) classifiers: Random Forest (RF) Deep Neural Network...
Regenerative blowers can produce a high head with small flow rate, which makes them desirable compared to positive displacement pumps. The regenerative blower consists of an impeller and casing. shape contributes the performance blower. CFD analysis is conducted investigate effect geometrical modification on operating condition like head, power, efficiency. geometry achieved by varying blade curvature radius, inclination angle, (curved, radially straight, chevron), disk side gap passage...
High pumping performance is essential for the boiler in industrial processes and thermal power plants. The multistage centrifugal pump one of options feed because it can deliver a wide range head flow rates. operates at temperatures, working fluid properties are sensitive to temperature. change thermodynamic (viscosity, density, conductivity) will affect efficiency pump. Besides hydraulic pumps, adversely structural stability It necessary understand influence on design operate appropriately.
An annular jet pump (AJP) and a screw centrifugal (SCP) are special-purpose pumps used for transportation. The flow fields in the AJP SCP like those diffuser without with an impeller, respectively. from inlet to outlet takes place via conversion of kinetic energy static pressure. J-Groove is installed wall induce reverse inlet, which suppresses cavitation. CFD analysis was carried out verify conceptual design understand internal field J-Groove. showed that installation improved suction...
Abstract There are many methods available for measurement of bed morphology in physical hydraulic model studies considering mobile sediment. Among which, there sophisticated instrumentations which provide quality results shorter time but vastly expensive and requires special training execution. Whereas the conventional surveying methodology, is simple inexpensive, plenty processing data. That why recent developments ‘Structure from Motion’ (SfM) technique have made it a potential candidate...
Pump storage systems are an emerging technology in the field of hydropower. turbines considerably useful for run-off-type can be used to generate power and regulate water from lower reservoir upper using a single unit. allow maintain stable renewable generation. Unfortunately, there no appropriate pump turbine designs because it is difficult performance both modes. In this study, design experimental investigation have been discussed. A 3-kW-class model was designed discharge gradient head...