Results 21 to 30 of about 3,330,118 (346)

CFD and Energy Loss Model Analysis of High-Speed Centrifugal Pump with Low Specific Speed

open access: yesApplied Sciences, 2022
High-speed centrifugal pumps with low specific speed have the characteristics of a small flowrate, a high head, and being compact and light weight, making them promising candidates for applications in the thermal management of aerospace and electronic ...
Rong Xue   +5 more
doaj   +1 more source

EFFECT OF THE FLOW FIELD DEFORMATION IN THE WIND TUNNEL ON THE AERODYNAMIC COEFFICIENTS

open access: yesActa Polytechnica, 2015
The flow field quality has a principal signification at wind tunnel measurement. The creation of the flow field of air by fan leads to the rotation of entire flow field which is, moreover, deformed at the bends of the wind tunnel with close circulation ...
Dušan Maturkanič
doaj   +1 more source

Influence of soil moisture on energy requirement of rotary tilling

open access: yesEnvironment Conservation Journal, 2021
The rotary tiller with ‘L’ shaped blades was examined for torque, power and specific tilling energy requirements to attain optimum soil-machine operational parameters.
Shiddanagouda Yadachi   +2 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

Specific cutting energy consumption in a circular saw for eucalyptus stands WM01 and MN463 [PDF]

open access: yes, 2011
Modern technologies for continuous carbonization of Eucalyptus sp. require special care in wood cutting procedures. Choosing the right tool, cutting speeds and feed rates is important to manage time and energy consumption, both of which being critical ...
Gomes Gontijo, Thiago   +5 more
core   +2 more sources

Muscle Synergies Facilitate Computational Prediction of Subject-Specific Walking Motions. [PDF]

open access: yes, 2016
Researchers have explored a variety of neurorehabilitation approaches to restore normal walking function following a stroke. However, there is currently no objective means for prescribing and implementing treatments that are likely to maximize recovery ...
Andrew J Meyer   +6 more
core   +3 more sources

Movable blade systems of low specific speed centrifugal pumps [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
One of the most common types of pumping units used in industry are centrifugal pumps. In turn, there is a classification of centrifugal pumps according to design features.
K. E. Denisov, A. K. Liamasov
doaj   +1 more source

Correlations Between Adolescent Processing Speed and Specific Spindle Frequencies

open access: yesFrontiers in Human Neuroscience, 2015
Sleep spindles are waxing and waning thalamocortical oscillations with accepted frequencies of between 11 and 16 Hz and a minimum duration of 0.5 seconds.
Rebecca S. Nader   +2 more
doaj   +1 more source

Investigation on the impact of design wind speed and control strategy on the performance of fixed-pitch variable-speed wind turbines [PDF]

open access: yes, 2017
Wind turbine blade design optimization remains one of the fundamental research areas for modern wind turbine technology. The general design process for fixed-pitch variablespeed wind turbine blades assumes the rated wind speed as the design wind speed ...
Liu, Xiongwei   +2 more
core   +1 more source

The dynamics of the high-speed abilities of young players 12, 13, 14 years old

open access: yesСлобожанський науково-спортивний вісник, 2014
Purpose: to determine the dynamics of the high-speed abilities of young players. Materials and Methods: the change in performance of speed players at women's 30 meters run, using both specific and non-specific methods.
Vladimir Perevoznyk
doaj   +1 more source

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