Identification of an initial non-linear transition in reciprocating finite-length pipe flow

2021 ◽  
Vol 33 (12) ◽  
pp. 125111
Author(s):  
D. Tothova ◽  
R. Manasseh ◽  
S. A. Sannasiraj
Keyword(s):  
Finite Length ◽  
Pipe Flow ◽  
Non Linear

Resonance in laminar pipe flow of non-linear viscoelastic fluids

2019 ◽  
Vol 115 ◽  
pp. 53-60 ◽  
Author(s):  
Mario F. Letelier ◽  
Dennis A. Siginer ◽  
Diego L. Almendra ◽  
Juan S. Stockle
Keyword(s):  
Pipe Flow ◽  
Viscoelastic Fluids ◽  
Non Linear ◽  
Linear Viscoelastic ◽  
Laminar Pipe Flow

Wave Function Engineering of Linear and Non-Linear Optical Response in Si-Ge Quantum Well Structures and Superlattices

1991 ◽  
Vol 220 ◽  
Author(s):  
M. Jaros ◽  
R. J. Turton ◽  
K. B. Wong
Keyword(s):  
Wave Function ◽  
Electronic Structure ◽  
Quantum Well ◽  
Finite Length ◽  
Optical Response ◽  
Optical Nonlinearities ◽  
Optical Transitions ◽  
Quantum Well Structures ◽  
Non Linear ◽  
Zone Folding

ABSTRACTWe show that the infinite Si-Ge superlattices predicted to exhibit strong optical transitions across the fundamental gap and between conduction subbands also give rise to significant optical nonlinearities. Efficient optical transitions can also be achieved in finite-length structures grown on Si or Ge substrates. However, the zone folding argument does not apply and the electronic structure strongly reflects the finite length of such systems.

Incompresible Periodically Reversing Flow in a Conical Pipeline of Finite Length

2009 ◽  
Author(s):  
J. Luis Luviano-Ortiz ◽  
Eduardo Ramos ◽  
Abel Hernandez-Guerrero ◽  
Jose-Manuel Luna
Keyword(s):  
Finite Length ◽  
Pipe Flow ◽  
Oscillatory Flow ◽  
Flow Behavior ◽  
Three Dimensional ◽  
Diameter Ratio ◽  
Womersley Number ◽  
Hydrodynamic Behavior ◽  
Maximum Displacement ◽  
Generation Of Vortices

A numerical three-dimensional study has been carried out to analyze the hydrodynamic behavior of an incompressible periodically-reversing flow in a conical pipeline of finite length. In order to generate the oscillatory flow, a two pistons-driven pipe flow was established (the pistons were placed at the ends of the pipeline.) In the smaller piston the Womersley number was set to 16 while the axial displacement/diameter ratio was set to 1. The hydrodynamic flow behavior is considered and discussed for the accelerating and decelerating phases of the cycle. The numerical results show the generation of vortices for different penetration lengths. One of the most representative results is that in the position of 183.25°, after the pistons reach their maximum displacement, the flow pattern loses the axial symmetry that had appeared for previous phases of the cycle.

The role of lateral pipe flow in hillslope runoff response: an intercomparison of non-linear hillslope response

2005 ◽  
Vol 311 (1-4) ◽  
pp. 117-133 ◽  
Author(s):  
Taro Uchida ◽  
Ilja Tromp-van Meerveld ◽  
Jeffrey J. McDonnell
Keyword(s):  
Pipe Flow ◽  
Non Linear

scholarly journals Centralizers of abelian subgroups in locally finite simple groups

1997 ◽  
Vol 40 (2) ◽  
pp. 217-225
Author(s):  
M. Kuzucuoǧlu
Keyword(s):  
Simple Group ◽  
Finite Length ◽  
Finite Simple Group ◽  
Abelian Subgroup ◽  
Simple Groups ◽  
Finite Simple Groups ◽  
Locally Finite ◽  
Odd Order ◽  
Non Linear ◽  
Abelian Subgroups

It is shown that, if a non-linear locally finite simple group is a union of finite simple groups, then the centralizer of every element of odd order has a series of finite length with factors which are either locally solvable or non-abelian simple. Moreover, at least one of the factors is non-linear simple. This is also extended to abelian subgroup of odd orders.

Analysis of a Nonlinear Elastic Force in a Relatively Long Annular Seal and its Impact on the Dynamics of the Rotor

2014 ◽  
Vol 630 ◽  
pp. 240-247 ◽  
Author(s):  
Alexandr Beda ◽  
Vitaliy Simonowsky
Keyword(s):  
Finite Length ◽  
Elastic Force ◽  
Linear Elastic ◽  
Centrifugal Machine ◽  
Non Linear ◽  
Annular Seal ◽  
Force Impact ◽  
Nonlinear Elastic

The authors have developed a method of calculating the non-linear elastic force that arises in the clearance seal of a finite length. The authors have analysed the force impact on the dynamics of the rotor of a centrifugal machine.

ON THE MINIMUM OSCILLATORY CHARACTER OF SPHERICAL SEISMIC PULSES

Geophysics ◽  
1949 ◽  
Vol 14 (1) ◽  
pp. 17-20 ◽  
Author(s):  
C. Hewitt Dix
Keyword(s):  
Wave Equation ◽  
General Solution ◽  
Finite Length ◽  
Present Note ◽  
Spherical Wave ◽  
Linear Effect ◽  
Non Linear Effect ◽  
Non Linear ◽  
Hooke's Law ◽  
Oscillatory Character

Compressional seismic pulses, such as originate from an explosion in a shot hole, can be discussed generally without reference to the non‐linear effect, such as heating, fracturing and other departures from Hooke’s law, in the neighborhood of the shot. A pulse of finite length from front to back is considered in the present note. It is shown that such a pulse is not as arbitrary as the general solution of the spherical wave equation would indicate, but the dilatation must change algebraic sign at least twice within the pulse. Thus the pulse must generally be, to this minimal extent, oscillatory if the front and rear regions are to be quiet.

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