Abstract Hydro energy is one of the potentials renewable Energy in Indonesia. Indonesia has a vast sea, amount 3,544,743.9 km 2 making suitable country to utilize Oscillating Water Column (OWC) type power plants. The study was conducted determine effect column diameter on performance OWC devices, especially speed and dynamic pressure. There are 5 variations studied, namely 0.5 m, 0.75 1 1.25 1....

Objective : The present paper is an attempt to improve results on fixed point theorems for four pairwise occasionally weakly compatible (owc) mappings in S-metric spaces. Method: We have applied quadratic inequality prove certain fixed-point owc under weaker conditions using (CLR) property. Findings: generalized and expanded some already existing the literature new are obtained that generated c...

A numerical investigation into the hydrodynamic efficiency of an oscillating water column (OWC) device for production energy from sea waves under conditions regular and irregular is proposed. The simulations were carried out using a two-dimensional version recently published three-dimensional free-surface nonhydrostatic model, which based on conservative form contravariant Navier–Stokes equatio...

The increasing demand for bandwidth through modern applications and multimedia services has led to high-speed wireless communications. Optical communications (OWC) encourages solutions that provide a higher data rate due the large available. In this paper, performance enhancement approaches are studied simulated visible light communication (VLC) as case study. orthogonal frequency division mult...

This paper examines advanced modulation coding schemes for an optical transceiver systems–based wireless communication (OWC) channel model. These techniquesinclude On-Off keying and return to zero (RZ)/non–return (NRZ) coding. The signal power level against time frequency spectral variations are measured. max. Q factor min. bit error rate (BER) estimated clarified each code scheme by using opti...

Optical wireless communication has undeniably revolutionized the satellite communication systems for use in the coming future. These OWC systems have become popular due to their high data rate performance in different weather conditions. This paper demonstrates a comparative analysis of RZ (Return to zero), NRZ (Non-return to zero) and Gaussian pulse generation methods by varying the levels of ...

Oscillating water column (OWC) systems are power generation plants that transform wave kinetic energy into electrical by a surrounded air in chamber changes its pressure through the waves motion. The output spins Wells turbine is linked to doubly fed induction generator (DFIG), flexible devices adjust speed increase efficiency. However, there different nonlinearities associated with these such ...

Seas and oceans offer great potential as a widely available source of clean renewable energy near high consumption centers. This is valuable option in the transition matrix decarbonization. Wave an oscillating water column (OWC) device stand out types ocean with most potential. An onshore OWC requires locations rocky outcrops steeper slopes needs to be physically installed has lower dissipation...

A small-scale field experiment was conducted on a U-OWC incorporated into caisson breakwater at the NOEL laboratory of Reggio Calabria (Italy). The U-Oscillating Water Column (U-OWC) or REWEC (REsonant Wave Energy Converter) is device belonging to family OWCs. Such very innovative, being able absorb high percentage incoming sea waves energy and produce electrical power via proper PTO. focus pap...