Results 31 to 40 of about 34,180 (208)

Unstable Flow Structures Present at Different Rotational Velocities of the Centrifugal Compressor

open access: yesEnergies, 2020
Unstable flow structures cause inevitable energy losses in all power energy systems, including turbomachines. In this study, a set of analyses was conducted with the use of spectral maps on the pressure signals obtained from an industrial centrifugal ...
Grzegorz Liśkiewicz   +6 more
doaj   +1 more source

Transition models for turbomachinery boundary layer flows : a review [PDF]

open access: yes, 2017
Current models for transition in turbomachinery boundary layer flows are reviewed. The basic physical mechanisms of transition processes and the way these processes are expressed by model ingredients are discussed.
Dick, Erik, Kubacki, Slawomir
core   +2 more sources

NUMERICAL STUDIES OF INTERNAL FLOW IN DIFFERENT TYPES OF FILTERS

open access: yesTASK Quarterly, 2020
The quality of ambient air attracts considerable, widespread interest. Over the last decades, air purification has become an integral part of HVAC systems, process engineering, automotive and respiratory protection.
MAGDALENA STANIK   +4 more
doaj   +1 more source

Disc Thickness and Spacing Distance Impacts on Flow Characteristics of Multichannel Tesla Turbines

open access: yesEnergies, 2018
Tesla turbines are a kind of unconventional bladeless turbines, which utilize the viscosity of working fluid to rotate the rotor and realize energy conversion.
Wenjiao Qi   +4 more
doaj   +1 more source

Impact of Leakage Inlet Swirl Angle in a Rotor–Stator Cavity on Flow Pattern, Radial Pressure Distribution and Frictional Torque in a Wide Circumferential Reynolds Number Range

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2020
In the side-chambers of radial turbomachinery, which are rotor–stator cavities, complex flow patterns develop that contribute substantially to axial thrust on the shaft and frictional torque on the rotor.
Tilman Raphael Schröder   +3 more
doaj   +1 more source

Forces on Centrifugal Pump Impellers [PDF]

open access: yes, 1985
Forces are exerted on a centrifugal pump impeller, due to the asymmetry of the flow caused by the volute of diffuser, and to the motion of the center of the impeller whenever the shaft whirls. Recent work in the measurement of these forces as a function
Acosta, Allan   +3 more
core   +1 more source

Study on Humid Air Turbine Cooling Technique

open access: yes发电技术, 2021
In order to study the influence of humid air on the cooling performance of turbine blade and build the cooling performance prediction model of humid air turbine, the experimental platform of normal pressure turbine blade cooling was established, and the ...
Hua ZHU, Biao YAN, Yusong LIU, Liang LI
doaj   +1 more source

Numerical simulation methodologies for design and development of Diffuser-Augmented Wind Turbines – analysis and comparison

open access: yesOpen Engineering, 2016
Different numerical computation methods used to develop a methodology for fast, efficient, reliable design and comparison of Diffuser-Augmented Wind Turbine (DAWT) geometries are presented.
Lipian Michał   +3 more
doaj   +1 more source

Design and Numerical Analysis of Recuperator for a Liquid Carbon Dioxide Energy Storage System

open access: yesApplied Sciences, 2023
A liquid carbon dioxide energy storage (LCES) system has the characteristic of compact structure and easy liquefaction. As a component of heat recovery in the LCES system, the recuperator plays a crucial role in influencing the round trip efficiency (RTE)
Zhao Liu, Min Wang, Yu Song, Mengjuan Xu
doaj   +1 more source

Aerodynamic and Aeroelastic Effects of Design-Based Geometry Variations on a Low-Pressure Compressor

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2020
In modern aircraft engines, the low-pressure compressor (LPC) is subjected to a flow characterized by strong wakes and secondary flows from the upstream fan. This concerns ultra-high bypass ratio (UHBR) turbofan engines, in particular.
Torben Eggers   +4 more
doaj   +1 more source

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