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Menéndez Blanco Alberto

Bio: Menéndez Blanco Alberto is an academic researcher from University of Oviedo. The author has contributed to research in topics: Fluid–structure interaction & Diaphragm (mechanical device). The author has an hindex of 1, co-authored 1 publications receiving 15 citations.

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TL;DR: The comparison between numerical results and the experimental performance curves has confirmed the accuracy of the model and the correct mesh selection in the small gaps and passages of the pump internal geometry and suggested the convenience of the development of a full-unsteady 3D model in the near future.

21 citations


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Journal ArticleDOI
TL;DR: In this paper, numerical simulation and orthogonal design were undertaken to optimize the parameters of the ventilation and dust removal system for a shield tunneling machine, and to study the influence of each parameter on the dust removal from three aspects, including the distance of pressure tuyere, the air volume of the pressure tuere, and the distance inlet.

69 citations

Journal ArticleDOI
TL;DR: The results showed that the impeller with three speed patterns (including the constant speed pattern) met the normal blood demand of the human body and the rational modulation of the impellers speed and the structural optimization of a blood pump are important for improving hydrodynamic characteristics and hemolysis.
Abstract: A continuous-flow output mode of a rotary blood pump reduces the fluctuation range of arterial blood pressure and easily causes complications. For a centrifugal rotary blood pump, sinusoidal and pulsatile speed patterns are designed using the impeller speed modulation. This study aimed to analyze the hemodynamic characteristics and hemolysis of different speed patterns of a blood pump in patients with heart failure using computational fluid dynamics (CFD) and the lumped parameter model (LPM). The results showed that the impeller with three speed patterns (including the constant speed pattern) met the normal blood demand of the human body. The pulsating flow generated by the impeller speed modulation effectively increased the maximum pulse pressure (PP) to 12.7 mm Hg, but the hemolysis index (HI) in the sinusoidal and pulsatile speed patterns was higher than that in the constant speed pattern, which was about 2.1 × 10−5. The flow path of the pulsating flow field in the spiral groove of the hydrodynamic suspension bearing was uniform, but the alternating high shear stress (0~157 Pa) was caused by the impeller speed modulation, causing blood damage. Therefore, the rational modulation of the impeller speed and the structural optimization of a blood pump are important for improving hydrodynamic characteristics and hemolysis.

15 citations

Journal ArticleDOI
TL;DR: A full 3D unsteady numerical model with dynamic meshes is developed to simulate the fluid–structure interaction in the non-returning valves of air-operated diaphragm volumetric pumps, providing a more accurate description of the flow patterns and a superior evaluation regarding the dynamic response of the valves motion.

13 citations

Journal ArticleDOI
01 May 2021
TL;DR: This work aims to improve the operating head and efficiency of tubular pumps while maintaining a low shaft power by using computational fluid dynamics (CFD) to find the optimized scheme.
Abstract: Tubular pumps are widely used in irrigation and water conveyance projects. However, the operating head of most of these pumps is low, and only a few studies have focused on the design of an efficie...

9 citations

Journal ArticleDOI
TL;DR: In this paper, a quasi-analytical model based on fluid mechanics is established to estimate the no-load power losses of a spiral bevel gear with splash lubrication, where the noload losses are defined as the sum of churning power losses and windage power losses.

9 citations