Results 1 to 10 of about 3,583,165 (298)
Frontiers in Energy Research, 2022 The flow in a double-suction twin-volute five-stage centrifugal pump is studied numerically using Computational Fluid Dynamics (CFD) calculations. The pump performance at various flow rates obtained numerically are compared with the theoretically results.
Mohamed Murshid Shamsuddeen +7 more
doaj +1 more source
Scientific Reports, 2023 In this study, numerical simulation was employed to predict the performance and internal flow characteristics of the inlet of an axial-flow pump by assigning an absolute flow angle to the inlet guide vane (IGV) trailing-edge flow.
Yong-Jin Son +5 more
doaj +1 more source
Entropy, 2022 In this research work, we deal with the stabilization of uncertain fractional-order neutral systems with delayed input. To tackle this problem, the guaranteed cost control method is considered.
Zahra Sadat Aghayan +2 more
doaj +1 more source
Scientific Reports, 2023 Inlet flow direction significantly affects the hydraulic performance of an axial-flow pump. Usually, the research papers ignore this phenomenon, resulting in discrepancies between simulation and experimental results.
Duc-Anh Nguyen +3 more
doaj +1 more source
Engineering Applications of Computational Fluid Mechanics, 2022 Most mixed-flow pumps obtain a saddle-like Q-P curve with a backflow, owing to the increased incidence angle at low flow rates. The backflow was developed near the shroud and followed downstream again at its end to form a recirculating flow. The rotating
Yong-In Kim +3 more
doaj +1 more source
AIMS Mathematics, 2022 This paper deals with the existence and approximate controllability outcomes for Hilfer fractional neutral evolution equations. To begin, we explore existence outcomes using fractional computations and Banach contraction fixed point theorem. In addition,
Krishnan Kavitha +5 more
doaj +1 more source
Scientific Reports, 2022 The stall in an axial fan is directly related to detrimental phenomena such as performance degradation, vibration, noise, and flow instability at low flow rates.
Yong-In Kim +3 more
doaj +1 more source
Fractal and Fractional, 2021 This article is mainly devoted to the study of the existence of solutions for second-order abstract non-autonomous integro-differential evolution equations with infinite state-dependent delay.
Shahram Rezapour +4 more
doaj +1 more source
Asymptotic Behavior of Solutions in Nonlinear Neutral System with Two Volterra Terms
Mathematics, 2023 In this manuscript, we generalise previous results in the literature by providing sufficient conditions for the matrix measure to guarantee the stability, asymptotic stability and exponential stability of a neutral system of differential equations.
Mouataz Billah Mesmouli +2 more
doaj +1 more source
Power system neutral point grounding
Journal of Energy - Energija, 2022 The method used for neutral point grounding is very important for power network operation. There are many ways of grounding, which are used in practice, and the decision on the method of neutral grounding depends on the situation in the network connected to the substation.
DRANDIĆ, ANA +3 more
openaire +4 more sources