scholarly journals The inside view of an oscillating pipe

2016 ◽  
Vol 808 ◽  
pp. 1-4
Author(s):  
Yahya Modarres-Sadeghi
Keyword(s):  
Nonlinear Dynamics ◽  
Model Problem ◽  
Theoretical Studies ◽  
Pipe Conveying Fluid ◽  
Fluid Structure Interactions ◽  
Routes To Chaos ◽  
Different Types ◽  
Inside View ◽  
Experimental And Theoretical Studies ◽  
Conveying Fluid

A pipe conveying fluid is a model problem in fluid–structure interactions and nonlinear dynamics. Several experimental and theoretical studies exist on this problem and very rich nonlinear dynamics have been observed including super- and subcritical instabilities as well as various routes to chaos. Despite all the existing studies, we had not yet seen the fluid inside an oscillating pipe as the pipe undergoes different types of flow-induced instabilities. But the wait is over.

scholarly journals Experimental and theoretical studies on thymine photodimerization mediated by oxidatively generated DNA lesions and epigenetic intermediates

2020 ◽  
Vol 22 (44) ◽  
pp. 25661-25668
Author(s):  
Mauricio Lineros-Rosa ◽  
Antonio Francés-Monerris ◽  
Antonio Monari ◽  
Miguel Angel Miranda ◽  
Virginie Lhiaubet-Vallet
Keyword(s):  
Dna Lesions ◽  
Theoretical Studies ◽  
Computational Studies ◽  
Thymine Dimers ◽  
Different Types ◽  
Experimental And Theoretical Studies

Combined spectroscopic and computational studies reveal that, in spite of their structural similarities, 5-formyluracil and 5-formylcytosine photosensitize cyclobutane thymine dimers through two different types of mechanisms.

Nonlinear dynamics of a sliding pipe conveying fluid

2018 ◽  
Vol 81 ◽  
pp. 36-57 ◽  
Author(s):  
Hao Yan ◽  
Huliang Dai ◽  
Qiao Ni ◽  
Lin Wang ◽  
Yikun Wang
Keyword(s):  
Nonlinear Dynamics ◽  
Pipe Conveying Fluid ◽  
Conveying Fluid

scholarly journals 1001 Nonlinear Dynamics of Pipe Conveying Fluid in the Case of Coupled Modes Vibration

2008 ◽  
Vol 2008.45 (0) ◽  
pp. 329-330
Author(s):  
Kiyotaka YAMASHITA ◽  
Masatsugu YOSHIZAWA ◽  
Yuuki HIROSE ◽  
Akira TANIGUCHI
Keyword(s):  
Nonlinear Dynamics ◽  
Pipe Conveying Fluid ◽  
Coupled Modes ◽  
Conveying Fluid

scholarly journals STUDY OF THE PASTE-LIKE PROPELLANT COMBUSTION AT VARIOUS LOADING SCHEMES

2020 ◽  
pp. 89-101
Author(s):  
Viktor V. BURKIN ◽  
◽  
Aleksey S. D’YACHKOVSKIY ◽  
Aleksandr N. ISHCHENKO ◽  
Vladimir Z. KASIMOV ◽  
...  
Keyword(s):  
Maximum Pressure ◽  
Theoretical Studies ◽  
Powder Charge ◽  
Propellant Combustion ◽  
Dispersion Law ◽  
Different Types ◽  
Propellant Charge ◽  
The Mathematical Model ◽  
Experimental And Theoretical Studies ◽  
Theoretical Results

The experimental and theoretical studies of the paste-like propellant combustion in a model ballistic installation are implemented. The research is carried out using three masses of projectile assemblies and three types of the propellant charge. The paper presents two versions of the law of dispersion for paste-like propellants which allow accounting for the pressure on the front and acceleration of the projectile assembly with a traveling charge. The coefficients in the laws of dispersion are obtained. Using the mathematical model presented in this work, the gas-dynamic pictures of the shots when the propellants are applied as traveling charges are obtained for each dispersion law. Based on the results, a detailed study of the processes occurring with the traveling charge consisting of a model paste-like propellant is implemented for various shot arrangements. The discrepancy between theoretical results and the results obtained in the set of experiments is no more than 2% for the maximum pressure and no more than 1% for the muzzle velocity. The dispersion law accounting for the projectile assembly acceleration and traveling charge makes it possible to describe accurately the processes in the space behind the projectile for projectile assemblies of various masses and different types of granulated powder charge in terms of the model ballistic installation in the considered pressure range.

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