Results 1 to 10 of about 41,682 (296)

Study of High-Frequency Pulsating Flow Control Valves

open access: yesApplied Sciences
Pulsating flow signals are widely used in the fields of dynamic calibration of flow meters and reliability testing of fluid transmission pipelines.
Dongdong Zhang   +5 more
doaj   +2 more sources

Experimental and drying kinetics study on millet particles by a pulsating fluidized bed dryer [PDF]

open access: yesHeliyon
This research studies experimentally the drying of foxtail millet in a pulsation-assisted fluidized bed. The effects of temperature and pulsating flow frequency on millet drying are examined. The experiments are conducted at temperatures of 40 °C, 50 °C,
Milad Setareh   +3 more
doaj   +2 more sources

Thermal Performance of a Counter-Flow Double-Pass Solar Air Heater With The Steady and Pulsating Flow [PDF]

open access: yesEngineering and Technology Journal, 2023
The present work studied the influence of pulsating flow as an active method on the thermal performance of a double-pass solar air heater with a tubular solar absorber. A ball valve has been used as a pulse generator mounted at the downstream flow of the
Nassr Hussein, Sabah Ahmed, Ali Ekaid
doaj   +1 more source

Frequency stabilities of two pulsating white dwarfs

open access: yesOpen Astronomy, 2000
Sullivan D. J., Sullivan T.
doaj   +2 more sources

FREQUENCY ANALYSIS OF PHOTOGRAPHIC OBSERVATIONS OF PULSATING STARS

open access: yesOdessa Astronomical Publications, 2017
The Fourier analysis are performed for photoelectric and photographic B-observations (Goranskij and Shugarov, 1979) of RR Lyrae star RW Ari. Besides the main frequency f0 and four its first harmonics two more frequencies are found: f1 =f0 /3 and f2 =0 ...
V. P. Bezdenezhnyi
doaj   +2 more sources

Numerical study of local heat transfer in tube bundle in pulsating flow [PDF]

open access: yesE3S Web of Conferences, 2023
Forced pulsating flows enhance the heat transfer of various heat exchange equipment; however, such flows remain poorly understood. A numerical simulation was used to study how the position of a cylinder in a tube bundle affects the heat transfer during ...
Haibullina Aigul, Hayrullin Aidar
doaj   +1 more source

The Effect of Flow-Induced Vibration on Heat and Mass Transfer Performance of Hollow Fiber Membranes in the Humidification/Dehumidification Process

open access: yesMembranes, 2021
Cross-flow hollow fiber membranes are commonly applied in humidification/dehumidification. Hollow fiber membranes vibrate and deform under the impinging force of incoming air and the gravity of liquid in the inner tube.
Zhenxing Li   +5 more
doaj   +1 more source

Pulsation frequency distribution in δ Scuti stars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
We study the frequency distributions of Delta Scuti stars observed by the Kepler satellite in short-cadence mode. To minimize errors in the estimated stellar parameters, we divided the instability strip into ten regions and determined the mean frequency distribution in each region.
Balona, L. A.   +2 more
openaire   +2 more sources

A Numerical Study on the Cement Slurry Penetration Performance of the Cyclic Grouting Method with High-Frequency Pulsating Pressure

open access: yesApplied Sciences, 2023
The performance of traditional steady grouting is sometimes limited; therefore, a new high-frequency pulsed grouting method is proposed. Through the CFD method, this paper studies the cement slurry penetration performance of cyclic grouting under the ...
Yongfeng Li   +5 more
doaj   +1 more source

PULSATION FREQUENCIES AND MODES OF GIANT EXOPLANETS [PDF]

open access: yesThe Astrophysical Journal, 2013
Accepted for publication in the Astrophysical Journal; 15 Figures and 11 ...
Bihan, Bastien Le, Burrows, Adam
openaire   +2 more sources

Home - About - Disclaimer - Privacy