40 citations · 407 across the 63 of their papers we have counts for
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Perturbed potential temperature distribution in atmospheric boundary layers
N. Karjanto
This article discusses the modeling of perturbed potential temperature in an atmospheric boundary layer. We adopt a convection-diffusion model with specified initial and boundary c…
A theoretical study on a two-dimensional flap-type wavemaker
N. Karjanto
A mathematical model for unidirectional wave generation explained in this study. The model consists of Laplace's equation in the semi-infinite two-dimensional water interior, dynam…
Maximum temporal amplitude and designs of experiments for generation of extreme waves
Marwan, Andonowati, N. Karjanto
This paper aims to describe a deterministic generation of extreme waves in a typical towing tank. Such a generation involves an input signal to be provided at the wavemaker in such…
Stability of the NLS equation with viscosity effect
N. Karjanto, K. M. Tiong
A nonlinear Schrödinger (NLS) equation with an effect of viscosity is derived from a Korteweg-de Vries (KdV) equation modified with viscosity using the method of multiple time-scal…
Extreme wave phenomena in down-stream running modulated waves
Andonowati, N. Karjanto, E. van Groesen
Modulational, Benjamin-Feir, instability is studied for the down-stream evolution of surface gravity waves. An explicit solution, the soliton on finite background, of the NLS equat…
First- and second-order wave generation theory
N. Karjanto
The first-order and the second-order wave generation theory is studied in this paper. The theory is based on the fully nonlinear water wave equations. The nonlinear boundary value…
Linear theory for single and double flap wavemakers
W. M. Kusumawinahyu, N. Karjanto, G. Klopman
In this paper, we are concerned with deterministic wave generation in a hydrodynamic laboratory. A linear wavemaker theory is developed based on the fully dispersive water wave equ…
Qualitative comparisons of experimental results on deterministic freak wave generation based on modulational instability
N. Karjanto, E. van Groesen
A number of qualitative comparisons of experimental results on unidirectional freak wave generation in a hydrodynamic laboratory are presented in this paper. A nonlinear dispersive…
On the method of strained parameters for a KdV type of equation with exact dispersion property
N. Karjanto
This paper provides an alternative methodology for analysis of three-wave interactions under the exact dispersion relation associated with gravity waves in fluid of intermediate de…
Deterministic aspects of nonlinear modulation instability
E. van Groesen, Andonowati, N. Karjanto
Different from statistical considerations on stochastic wave fields, this paper aims to contribute to the understanding of (some of) the underlying physical phenomena that may give…
Experiments on extreme wave generation using the Soliton on Finite Background
R. H. M. Huijsmans, G. Klopman, N. Karjanto +1
A theoretical model of Soliton on Finite Background of a family of exact solution of the nonlinear Schrödinger equation for extreme wave generation is discussed in this paper. Some…
Derivation of the NLS breather solutions using displaced phase-amplitude variables
N. Karjanto, E. van Groesen
Breather solutions of the nonlinear Schrödinger equation are derived in this paper: the Soliton on Finite Background, the Ma breather and the rational breather. A special Ansatz of…
Investigation of the maximum amplitude increase from the Benjamin-Feir instability
N. Karjanto, E. van Groesen, P. Peterson
The Nonlinear Schrödinger (NLS) equation is used to model surface waves in wave tanks of hydrodynamic laboratories. Analysis of the linearized NLS equation shows that its harmonic…