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GENERATION OF LONG WATER WAVES BY MO...

LEE, SEUNG-JOON.

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GENERATION OF LONG WATER WAVES BY MOVING DISTURBANCES (NONLINEAR, DISPERSIVE, SHALLOW, SURFACE, BOTTOM).

Record Type:	Language materials, printed : Monograph/item
Title/Author:	GENERATION OF LONG WATER WAVES BY MOVING DISTURBANCES (NONLINEAR, DISPERSIVE, SHALLOW, SURFACE, BOTTOM)./
Author:	LEE, SEUNG-JOON.
Description:	171 p.
Notes:	Source: Dissertation Abstracts International, Volume: 46-08, Section: B, page: 2729.
Contained By:	Dissertation Abstracts International46-08B.
Subject:	Engineering, General. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8522622

GENERATION OF LONG WATER WAVES BY MOVING DISTURBANCES (NONLINEAR, DISPERSIVE, SHALLOW, SURFACE, BOTTOM).
LEE, SEUNG-JOON.

GENERATION OF LONG WATER WAVES BY MOVING DISTURBANCES (NONLINEAR, DISPERSIVE, SHALLOW, SURFACE, BOTTOM). - 171 p.

Source: Dissertation Abstracts International, Volume: 46-08, Section: B, page: 2729.

Thesis (Ph.D.)--California Institute of Technology, 1985.

Several theoretical models are developed to study generation of nonlinear dispersive long waves by moving disturbances. All these models belong to the same class as the original Boussinesq or KdV model. The newly developed models, now with external forcing functions added to the KdV equation and the pair of coupled Boussinesq equations, have been chosen for numerical investigations. A predictor-corrector method is adopted to develop the numerical schemes employed here. In order to make the region of computation reasonably small for the case with moving disturbances, a pseudo-moving frame and the sufficiently transparent open boundary conditions are devised. The numerically obtained surface elevations exhibit a series of positive waves running ahead of the disturbance over a wide range of transcritical speeds of the disturbance. The numerical results show that, for speeds close to the critical value, the generation of such waves appears to continue indefinitely. The numerically obtained wave resistance coefficient is compared to the results given by linear dispersive theory. Numerical solutions have been obtained using the KdV and Boussinesq models with surface pressure and bottom bump as forcing functions. Comparisons are made between these results for various cases. Experiments were conducted for a two-dimensional bottom bump moving steadily in shallow water of a towing tank. Experimental results so attained are compared with the numerical solutions, and the agreement between them is good in terms of both the magnitude and the phase of the waves for the range of parameters used in the current study.Subjects--Topical Terms:

1020744
Engineering, General.

GENERATION OF LONG WATER WAVES BY MOVING DISTURBANCES (NONLINEAR, DISPERSIVE, SHALLOW, SURFACE, BOTTOM).
LDR:02411nam 2200229 a 45 001 932659
005 20110505
008 110505s1985 d
035 $a (UnM)AAI8522622
035 $a AAI8522622
040 $a UnM $c UnM
100 1 $a LEE, SEUNG-JOON. $3 1256401
245 1 0 $a GENERATION OF LONG WATER WAVES BY MOVING DISTURBANCES (NONLINEAR, DISPERSIVE, SHALLOW, SURFACE, BOTTOM).
300 $a 171 p.
500 $a Source: Dissertation Abstracts International, Volume: 46-08, Section: B, page: 2729.
502 $a Thesis (Ph.D.)--California Institute of Technology, 1985.
520 $a Several theoretical models are developed to study generation of nonlinear dispersive long waves by moving disturbances. All these models belong to the same class as the original Boussinesq or KdV model. The newly developed models, now with external forcing functions added to the KdV equation and the pair of coupled Boussinesq equations, have been chosen for numerical investigations. A predictor-corrector method is adopted to develop the numerical schemes employed here. In order to make the region of computation reasonably small for the case with moving disturbances, a pseudo-moving frame and the sufficiently transparent open boundary conditions are devised. The numerically obtained surface elevations exhibit a series of positive waves running ahead of the disturbance over a wide range of transcritical speeds of the disturbance. The numerical results show that, for speeds close to the critical value, the generation of such waves appears to continue indefinitely. The numerically obtained wave resistance coefficient is compared to the results given by linear dispersive theory. Numerical solutions have been obtained using the KdV and Boussinesq models with surface pressure and bottom bump as forcing functions. Comparisons are made between these results for various cases. Experiments were conducted for a two-dimensional bottom bump moving steadily in shallow water of a towing tank. Experimental results so attained are compared with the numerical solutions, and the agreement between them is good in terms of both the magnitude and the phase of the waves for the range of parameters used in the current study.
590 $a School code: 0037.
650 4 $a Engineering, General. $3 1020744
690 $a 0537
710 2 0 $a California Institute of Technology. $3 726902
773 0 $t Dissertation Abstracts International $g 46-08B.
790 $a 0037
791 $a Ph.D.
792 $a 1985
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8522622