Effects of uncertain topographic input data on two-dimensional flow modeling in a gravel-bed river

2011 ◽  
Vol 47 (3) ◽  
Author(s):  
Carl J. Legleiter ◽  
Phaedon C. Kyriakidis ◽  
Richard R. McDonald ◽  
Jonathan M. Nelson
Keyword(s):  
Input Data ◽  
Two Dimensional ◽  
Flow Modeling ◽  
Gravel Bed ◽  
Dimensional Flow ◽  
Two Dimensional Flow ◽  
Gravel Bed River

scholarly journals Force Budget: II. Application to Two-Dimensional Flow along Byrd Station Strain Network, Antarctica

1989 ◽  
Vol 35 (119) ◽  
pp. 61-67 ◽  
Author(s):  
C.J. Van Der Veen ◽  
I.M. Whillans
Keyword(s):  
Constitutive Relation ◽  
Input Data ◽  
Field Data ◽  
Two Dimensional ◽  
Water Drainage ◽  
Dimensional Flow ◽  
Basal Sliding ◽  
Longitudinal Variations ◽  
Two Dimensional Flow ◽  
Flow Law

AbstractResistive stresses and velocities at depth are calculated along the Byrd Station Strain Network, Antarctica, using field data. There are found to be large longitudinal variations in basal drag and this result is little affected by errors in the input data or by uncertainties in the constitutive relation for ice. Basal drag varies by a factor of about 2 along the strain network, and is usually equal to the driving stress to within 10–20%. Sites of high drag are not always correlated with basal topographic highs, indicating that some process such as basal water drainage is involved in controlling the friction at the bed. Basal sliding velocities are very sensitive to errors in measured surface velocities and the rate factor in Glen’s flow law. As a result, calculated sliding velocities are much less reliable than deep stresses, and need to be interpreted with caution.

Design, testing and two-dimensional flow modeling of a multiple-disk fan

2009 ◽  
Vol 33 (8) ◽  
pp. 1180-1187 ◽  
Author(s):  
Tahsin Engin ◽  
Mustafa Özdemir ◽  
Şevki Çeşmeci
Keyword(s):  
Two Dimensional ◽  
Flow Modeling ◽  
Dimensional Flow ◽  
Two Dimensional Flow

Two-Dimensional Flow of Polymer Solutions Through Porous Media

1999 ◽  
Vol 2 (3) ◽  
pp. 251-262
Author(s):  
P. Gestoso ◽  
A. J. Muller ◽  
A. E. Saez
Keyword(s):  
Porous Media ◽  
Polymer Solutions ◽  
Two Dimensional ◽  
Dimensional Flow ◽  
Two Dimensional Flow

STUDY OF NON-ISOTHERMAL TWO-DIMENSIONAL FLOW OVER A SQUARE CYLINDER IMMERSED IN A CHANNEL

2019 ◽  
Author(s):  
Gabriel Machado dos Santos ◽  
Ítalo Augusto Magalhães de Ávila ◽  
Hélio Ribeiro Neto ◽  
João Marcelo Vedovoto
Keyword(s):  
Two Dimensional ◽  
Square Cylinder ◽  
Dimensional Flow ◽  
Two Dimensional Flow

scholarly journals Two-dimensional flow field distribution characteristics of flocking drainage pipes in tunnel

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 139-148
Author(s):  
Shiyang Liu ◽  
Xuefu Zhang ◽  
Feng Gao ◽  
Liangwen Wei ◽  
Qiang Liu ◽  
...  
Keyword(s):  
Flow Field ◽  
Field Distribution ◽  
Rapid Development ◽  
Maximum Velocity ◽  
Distribution Characteristics ◽  
Two Dimensional ◽  
Dimensional Flow ◽  
Laboratory Test Results ◽  
Transverse Distance ◽  
Two Dimensional Flow

AbstractWith the rapid development of traffic infrastructure in China, the problem of crystal plugging of tunnel drainage pipes becomes increasingly salient. In order to build a mechanism that is resilient to the crystal plugging of flocking drainage pipes, the present study used the numerical simulation to analyze the two-dimensional flow field distribution characteristics of flocking drainage pipes under different flocking spacings. Then, the results were compared with the laboratory test results. According to the results, the maximum velocity distribution in the flow field of flocking drainage pipes is closely related to the transverse distance h of the fluff, while the longitudinal distance h of the fluff causes little effect; when the transverse distance h of the fluff is less than 6.25D (D refers to the diameter of the fluff), the velocity between the adjacent transverse fluffs will be increased by more than 10%. Moreover, the velocity of the upstream and downstream fluffs will be decreased by 90% compared with that of the inlet; the crystal distribution can be more obvious in the place with larger velocity while it is less at the lower flow rate. The results can provide theoretical support for building a mechanism to deal with and remove the crystallization of flocking drainage pipes.

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