Results 31 to 40 of about 62,377 (342)

Experience of applying 3D-scanning and CFD calculations to study and optimization the flow in the impeller of a multi-shaft centrifugal compressor [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
The paper presents an analysis of semi-open centrifugal impellers of a three-stage multi-shaft compressor. A 3D-scanning of the geometry of the impellers is carried out, a CFD calculation is carried out at the design operating mode of the compressor ...
E. V. Filimonov   +3 more
doaj   +1 more source

A novel reactor for determination of kinetics for solid catalyzed gas reactions [PDF]

open access: yes, 1994
A novel perfectly mixed laboratory reactor for determining kinetics of heterogeneously catalyzed gas-phase reactions has been developed. Perfect mixing is achieved by circulating the gas in the reactor using an axial flow impeller in a well streamlined ...
Borman, P.C.   +4 more
core   +2 more sources

Rotordynamic Forces on Centrifugal Pump Impellers [PDF]

open access: yes, 1987
The asymmetric flow around an impeller in a volute exerts a force upon the impeller. To study the rotordynamic force on an impeller which is vibrating around its machine axis of rotation, the impeller, mounted on a dynamometer, is made to whirl in a ...
Acosta, A. J.   +4 more
core  

Design and optimization of fuel injection of a 50 kW micro turbogas [PDF]

open access: yes, 2018
The present article deals with the design of a micro turbogas turbine suitable for on board applications, e.g., as a power generator on hybrid transit bus, characterized by a simple constructive approach.
Achille, Manuele, Capata, Roberto
core   +1 more source

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito   +14 more
wiley   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

open access: yesAdvanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart   +3 more
wiley   +1 more source

Effect of hub inclination angle on internal and external characteristics of centrifugal pump impellers

open access: yesAIP Advances, 2021
The flow characteristics at a centrifugal pump impeller are significantly affected by the hub inclination angle (HIA). The large eddy simulation turbulence model is employed to simulate the centrifugal pump impeller internal flow at two HIA values under ...
Renfei Kuang   +3 more
doaj   +1 more source

Development of a regenerative pump impeller using rapid manufacturing techniques [PDF]

open access: yes, 2010
This paper presents a method of rapid manufacture used in the development of a regenerative pump impeller. Rapid manufacturing technology was used to create complex impeller blade profiles for testing as part of a regenerative pump optimisation process ...
Quail, Francis J.   +2 more
core   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

On the Effect of Cavitation on the Radial Forces and Hydrodynamic Stiffness of a Centrifugal Pump [PDF]

open access: yes, 1986
The asymmetric flow within a volute exerts a radial force on a centrifugal impeller. The present paper presents experimental measurements of the radial forces on the impeller in the presence of ...
Acosta, A. J.   +3 more
core   +1 more source

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