Results 21 to 30 of about 602 (214)

Assessment of the unsteady performance of a turbocharger radial turbine under pulsating flow conditions: Parametric study and modeling

open access: yesEnergy Conversion and Management: X, 2022
A characteristic of radial turbines for turbocharger applications subject to pulsating flow is the deviation of the turbine performance compared with corresponding continuous flow conditions, typically associated with gas-stand experiments.
Roberto Mosca, Mihai Mihaescu
doaj   +1 more source

THERMAL INCREMENTS FOR PULSATION-FREQUENCY IN "ACCESSORY HEARTS" OF NOTONECTA [PDF]

open access: yesJournal of General Physiology, 1927
The frequencies of pulsation of the "accessory hearts" in the isolated swimming-legs of Notonecta were studied in relation to temperature, with the idea that in such organs central nervous control is impossible, and that in an isolated system irreversibly proceeding toward death it might be expected that further evidence would be found regarding the ...
W J, Crozier, T J, Stier
openaire   +2 more sources

Experimental study on characteristics of fracture propagation in pulsating hydraulic fracturing with flow control

open access: yesMeitan kexue jishu
Pulsating hydraulic fracturing technology has demonstrated advantages such as lower initiation pressure and complex fracture networks in reservoir stimulation fields including gas extraction, shale gas development, and geothermal exploitation. Currently,
Quangui LI   +8 more
doaj   +1 more source

Thermal performance analysis of artificially roughened solar air heater under turbulent pulsating flow with various wave shapes

open access: yesCase Studies in Thermal Engineering, 2023
This paper presents a numerical investigation of the operation of a solar air heater (SAH) with cylindrical shape ribs under turbulent pulsating flow based on thermal and frictional considerations.
Naeim Farouk   +8 more
doaj   +1 more source

Experimental studies of a pulsating turbine for a thermoacoustic converter of an on-board power plant

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
An analysis of methods for converting acoustic energy generated in a thermoacoustic engine into electrical energy was carried out. A method of calculating an axial pulsation turbine for converting acoustic energy into electrical energy was presented.
A. I. Dovgyallo   +3 more
doaj   +1 more source

Application of pulsating jet concept for efficiency improvement of solar-based air heaters

open access: yesCleaner Engineering and Technology
This study employs transient numerical analysis to investigate the hydraulic and thermal performance of a jet solar air heater (JSAH) operating under turbulent pulsating flow conditions, juxtaposed with a conventional solar air heater (SAH). The absorber
Sameer Ali Alsibiani
doaj   +1 more source

The Distribution and Vibration Mechanism of Pulsating Pressure in the Spillway of Arch Dam

open access: yesTaiyuan Ligong Daxue xuebao
[Purposes] The study on flood discharge safety of high arch dam involves the design of spillways, the strength of structure, the distribution of flow pressure, and the characteristics of flow pattern during flood discharge. [Methods] The study focuses on
GONG Chengyong   +5 more
doaj   +1 more source

PIV and LIF study of flow and thermal fields of twine plumes in water

open access: yesEPJ Web of Conferences, 2017
Flow and thermal fields of a pair of plane plumes in water are investigated by means of PIV and LIF experiments. The plumes are generated from thermal line sources, which are made out of electrically heated cylinders with a diameter of D = 1.21 mm.
Broučková Zuzana, Trávníček Zdeněk
doaj   +1 more source

Spatio-temporal evolution of pulsating aurora observed using a ground-based imagers

open access: yesFrontiers in Astronomy and Space Sciences
We investigated the pulsating aurora observed on 7 January 2014, by a narrow field-of-view (FOV) high-time resolution ground-based white-light imager and all-sky low-time-resolution imager operated at Poker Flat, AK (geographic: 65.1°N, 147.4°W).
Megha Pandya   +9 more
doaj   +1 more source

Pulse and pulsating supercharging phenomena in a semi-enclosed pipe

open access: yesScientific Reports, 2023
Considering the discontinuous square pulse wave and continuous sine pulsating wave, we report a distinctive supercharging phenomenon of fluid in a water-filled semi-enclosed pipe and reveal the supercharging regularity.
Fei Wang, Heng Li
doaj   +1 more source

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