Results 11 to 20 of about 42,563 (310)

Experimental study on water spray uniformity in an evaporative condenser of a water chiller

open access: yesCase Studies in Thermal Engineering, 2019
This study aims to investigate the water spray uniformity and collection ratio of sprinkler in an evaporative condenser of a water chiller. Experiments of water droplet distribution are conducted with 50 water collectors during the tests. Three different
Liang-Han Chien   +3 more
doaj   +1 more source

Heat Transfer Characteristics of Multinozzle Air Impingement Jet during Die Steel Plate Cooling Progress

open access: yesAdvances in Mechanical Engineering, 2015
Aiming at the new die steel quenching equipment, using Fluent software, the effects of the nozzle spacing, height, injection pressure, and comprehensive factors on the heat transfer characteristics are studied.
Dong-mei Zhu, Yan-tao Wang, Jian-hua Zhu
doaj   +1 more source

Acoustic shielding and interaction effects for strongly heated supersonic twin jets

open access: yesAIP Advances, 2021
The effects of jet interactions and acoustic shielding on the noise of strongly heated supersonic twin jets are studied using large-eddy simulations.
P. Pineau, C. Bogey
doaj   +1 more source

Influence of Non-Structural Parameters on Dual Parallel Jet Characteristics of Porous Nozzles

open access: yesMicromachines, 2020
As an important actuator of the dual parallel jet, the porous nozzle has some non-structural parameters (such as inlet pressure, nozzle spacing ratio, etc.) which have a significant influence on energy transport, chemical combustion and pollutant ...
Jin Zhang   +4 more
doaj   +1 more source

Probabilistic Assessment of Space Nuclear Propulsion System Nozzle [PDF]

open access: yesVolume 3C: General, 1993
Uncertainties associated with the design parameters of the Space Nuclear Propulsion System (SNPS) nozzle such as geometry, boundary conditions, material behavior, thermal and pressure loads, etc. are considered to assess its reliability. Preliminary assessment of the reliability is performed using NESSUS (Numerical Evaluation of Stochastic Structures ...
Ashwin R. Shah, Richard D. Ball
openaire   +1 more source

Simulation and structural optimization of flat double-P type radiant tubes based on the orthogonal method

open access: yes工程科学学报, 2017
The effects of structural dimensions such as central tube equivalent radius, branch tube equivalent radius, tube spacing, and tube length on the performance of a flat double-P type radiant tube were studied in this paper. The structural dimensions of the
XU Qian, FENG Jun-xiao
doaj   +1 more source

Velocity Profiles in a Cylindrical Liquid Jet by Reconstructed Velocimetry [PDF]

open access: yes, 2012
An experimental setup and a simple reconstruction method are presented to measure velocity fields inside slightly tapering cylindrical liquid jets traveling through still air.
Castrejon-Pita, JR   +2 more
core   +1 more source

Assessing the Relationships between Interdigital Geometry Quality and Inkjet Printing Parameters

open access: yesMicromachines, 2021
Drop on demand (DoD) inkjet printing is a high precision, non-contact, and maskless additive manufacturing technique employed in producing high-precision micrometer-scaled geometries allowing free design manufacturing for flexible devices and printed ...
Federico Bertolucci   +5 more
doaj   +1 more source

Dual-bell nozzle for space launchers with fluidic control of transition

open access: yesAIAA Propulsion and Energy 2021 Forum, 2021
The dual-bell nozzle is a promising altitude adaptive nozzle concept for improving the performance of existing space launchers as well as future reusable launch vehicles. It is characterized by an inflection in the wall geometry which links a base nozzle with a nozzle extension. Two working modes are therefore attained: a low-altitude mode in which the
Ferrero A.   +4 more
openaire   +4 more sources

Heat transfer rate of swirling impinging jets issuing from a twisted tetra-lobed nozzle

open access: yesCase Studies in Thermal Engineering, 2020
Heat transfer augmentation by swirling impinging jets delivered through twisted tetra-lobed nozzles (T-LT) is reported. Impinging jets delivered through a circular nozzle (CT: non-swirling jet) and a tetra-lobed nozzle (LT: non-swirling jet) were also ...
Khwanchit Wongcharee   +3 more
doaj   +1 more source

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