scholarly journals WAVE FORCE ON BREAKWATERS WITH CONCRETE BLOCK MOUN

1988 ◽  
Vol 1 (21) ◽  
pp. 159
Author(s):  
Masataro Hattori ◽  
Keiji Inagaki ◽  
Yuuji Noguchi ◽  
Taiji Endo
Keyword(s):  
Approximate Method ◽  
Flow Resistance ◽  
Concrete Block ◽  
Wave Theory ◽  
Wave Force ◽  
Theoretical Treatment ◽  
Practical Application ◽  
Rectangular Shape ◽  
Friction Law ◽  
Long Wave

Analytical theory is derived for prediction of the wave force acting on a upright structure armored by concrete block mound of rectangular shape. The theoretical treatment starts from the linear long wave theory and the flow resistance in the mound is described by a linearized friction law. As a practical application of the theory, approximate method for the structure with sloping block mound is proposed. Experiments are conducted to verify the theory and approximate method.

scholarly journals A study on the flow-resistance to planted porous concrete block

1996 ◽  
Vol 40 ◽  
pp. 1009-1014
Author(s):  
Kazutoshi KAN ◽  
Tuyoshi HORIGUCHI ◽  
Hideaki TARE
Keyword(s):  
Flow Resistance ◽  
Concrete Block ◽  
Porous Concrete

Nanotechnology, Long Waves, and Future of Manufacturing Industry

2020 ◽  
pp. 2053-2080
Author(s):  
Cem Okan Tuncel ◽  
Ayda Polat
Keyword(s):  
Manufacturing Industry ◽  
Wave Theory ◽  
Comparative Case Study ◽  
Industrialized Countries ◽  
Capitalist Development ◽  
Mena Countries ◽  
Newly Industrialized Countries ◽  
Long Wave ◽  
The Impact

This study concerns the long wave theory of capitalist development with an aim to discuss and analyze the impact of nanotechnology on manufacturing industry. Long wave theory was asserted by Russian economist Kondratieff and it states the capitalist development with subsequent cycles which last 40 to 60 years each. The theory of Kondratieff was also contributed by other scholars as Schumpeter, Freeman, and Perez. Our research attempts to review how nanotechnology contributes economic growth, and how it changes the structure of manufacturing industry at the eve of the sixth Kondratieff wave. This structure was examined by using comparative case study of European Union, East Asian Newly Industrialized Countries and Middle East and North African (MENA) countries.

scholarly journals RUN-UP OF PERIODIC WAVES ON BEACHES OF NON-UNIFORM SLOPE

1984 ◽  
Vol 1 (19) ◽  
pp. 23 ◽  
Author(s):  
Yoshinobu Ogawa ◽  
Nobuo Shuto
Keyword(s):  
Experimental Data ◽  
Wave Theory ◽  
Breaking Waves ◽  
Lagrangian Description ◽  
Periodic Waves ◽  
Swash Zone ◽  
Slope Method ◽  
Long Wave ◽  
Run Up ◽  
Better Than

Run-up of periodic waves on gentle or non-uniform slopes is discussed. Breaking condition and run-up height of non-breaking waves are derived "by the use of the linear long wave theory in the Lagrangian description. As to the breaking waves, the width of swash zone and the run-up height are-obtained for relatively gentle slopes (less than 1/30), on dividing the transformation of waves into dissipation and swash processes. The formula obtained here agrees with experimental data better than Hunt's formula does. The same procedure is applied to non-uniform slopes and is found to give better results than Saville's composite slope method.

Deformation Characteristics of the Ultrathin Liquid Film Surface Considering the Effects of Polar Endgroups

2007 ◽  
Author(s):  
Shigehisa Fukui ◽  
Soichi Shimizu ◽  
Kiyomi Yamane ◽  
Hiroshige Matsuoka
Keyword(s):  
Liquid Film ◽  
Thin Liquid Film ◽  
Film Surface ◽  
Wave Theory ◽  
Initial Boundary ◽  
Surface Forces ◽  
Deformation Characteristics ◽  
Long Wave ◽  
Vdw Force ◽  
Time Evolution Equation

To examine deformations of ultra-thin but continuum liquid film, the long wave theory was employed. The long wave theory uses the time-evolution equation for the shape and deformation of the thin liquid film and includes the surface tensions and surface forces such as the van der Waals (vdW) force. By numerically solving the time-dependent long wave equation, deformations of the ultra-thin lubricant film considering the vdW pressure with initial/boundary configurations of the liquid surfaces were obtained.

Dynamic Response of a Porous Seabed and an Offshore Pile to Linear Water Waves

2008 ◽  
Author(s):  
Jian-Fei Lu ◽  
Dong-Sheng Jeng
Keyword(s):  
Dynamic Response ◽  
Water Waves ◽  
Coupled Model ◽  
Expansion Method ◽  
Wave Theory ◽  
Horizontal Displacement ◽  
Element Model ◽  
Wave Force ◽  
Acoustic Medium ◽  
Linear Wave

In this study, a coupled model is proposed to investigate dynamic response of a porous seabed and an offshore pile to ocean wave loadings. Both the offshore pile and the porous seabed are treated as a saturated poro-elastic medium, while the seawater is considered as a conventional acoustic medium. The coupled boundary element model is established by the continuity conditions along the interfaces between the three media. In the system, wave force is considered as an external load and it is evaluated via the wave function expansion method in the context of a linear wave theory. Numerical results show that the increase of the modulus ratio between the pile and the seabed can reduce the horizontal displacement of the pile and the pore pressures of the seabed around the pile. Furthermore, the maximum pore pressure of the seabed usually occurs at the upper part of the seabed around the pile.

Technological innovation and the long wave theory revisited

2012 ◽  
Vol 79 (2) ◽  
pp. 414-416 ◽  
Author(s):  
Harold A. Linstone ◽  
Tessaleno Devezas
Keyword(s):  
Technological Innovation ◽  
Wave Theory ◽  
Long Wave
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