Results 1 to 10 of about 2,297 (164)

Electric Dipole Moments from Stark Effect in Supersonic Expansion: n-Propanol, n-Butanol, and n-Butyl Cyanide [PDF]

open access: yesMolecules, 2023
The orientation and magnitude of the molecular electric dipole moment are key properties relevant to topics ranging from the nature of intermolecular interactions to the quantitative analysis of complex gas-phase mixtures, such as chemistry in ...
Zbigniew Kisiel, Krzysztof Habdas
doaj   +2 more sources

Probing Cold Supersonic Jets with Optical Frequency Combs [PDF]

open access: yesMolecules
We report high-resolution, cavity-enhanced direct frequency comb Fourier transform spectroscopy of cold acetylene (C2H2) molecules in a planar supersonic jet expansion.
Romain Dubroeucq   +5 more
doaj   +2 more sources

Numerical Simulation of Pressure Fluctuation near an Expansion Corner in a Supersonic Flow of M = 3.01

open access: yesFluids, 2021
The influence of the expansion corner on pressure fluctuation is an important subject in supersonic flow around high-speed vehicles. Past studies have clarified how the expansion corner alters the root-mean-square of the fluctuating pressure coefficient (
Lei Zhang, Zi-Niu Wu
doaj   +3 more sources

Effect of Hydraulic Diameter on Potential Core Decay of Supersonic Jets [PDF]

open access: yesINCAS Bulletin, 2020
Various studies dealing with decay characteristics of circular and noncircular supersonic jets were conducted by previous researchers. But in these studies due emphasis was not given to the hydraulic diameter (Dh), shape factor (ζ) & the nozzle lip ...
Prasanta Kumar MOHANTA, B. T. N. SRIDHAR
doaj   +1 more source

A Unified Asymptotic Theory of Supersonic, Transonic, and Hypersonic Far Fields

open access: yesAxioms, 2022
The problems of steady, inviscid, isentropic, irrotational supersonic plane flow passing a body with a small thickness ratio was solved by the linearized theory, which is a first approximation at and near the surface but fails at far fields from the body.
Lung-Jieh Yang, Chao-Kang Feng
doaj   +1 more source

Impact of expansion level on flowfield with sudden expansion at supersonic regimes [PDF]

open access: yesMaterials Today: Proceedings, 2021
Abstract This paper aims to assess the control mechanism's efficiency and flow pattern in the pipe. The flow was investigated for Mach numbers M = 1.25, 1.3, 1.48, 1.6, 1.8, 2.0, 2.5, and 3.0 for a step height of 3 mm. The NPRs of the tests were from 11 to 3.
Mohammed Faheem   +4 more
openaire   +1 more source

Effects of the Operating Parameters of Supersonic Separators on the Supersonic Liquefaction Characteristics of Natural Gas

open access: yesEnergies, 2022
In this study, a mathematical model for the supersonic condensate flow of natural gas to understand its condensation process in a supersonic separator has been proposed.
Xueyuan Long   +3 more
doaj   +1 more source

Supersonic gas flow for preparation of ultrafine silicon powders and mechanochemical synthesis [PDF]

open access: yesRoyal Society Open Science, 2018
We report the supersonic gas flow for crush and mechanochemical synthesis. The key instrument parameters for production of supersonic particle flow, such as annular nozzle, expansion angle and length of the accelerating duct, are theoretically designed ...
Yang Tao   +6 more
doaj   +1 more source

The Shapes of Sulfonamides: A Rotational Spectroscopy Study

open access: yesMolecules, 2022
Benzenesulfonamides are a class of molecules of extreme interest in the biochemical field because many of them are active against a variety of diseases. In this work, the pharmacophoric group benzensulfonamide, its derivatives para-toluensulfonamide and ...
Annalisa Vigorito   +6 more
doaj   +1 more source

From Molecular to Cluster Properties: Rotational Spectroscopy of 2-Aminopyridine and of Its Biomimetic Cluster with Water

open access: yesMolecules, 2021
We report the observation and analysis of the rotational spectrum of a 1:1 cluster between 2-aminopyridine and water (AMW) carried out with supersonic expansion Fourier transform microwave spectroscopy at 4.7–16.5 GHz. Measurements of the 2-aminopyridine
Adam Kraśnicki   +2 more
doaj   +1 more source

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