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<article  article-type="research-article"        dtd-version="1.4">
            <front>

                <journal-meta>
                                                                <journal-id>kojose</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Kocaeli Journal of Science and Engineering</journal-title>
            </journal-title-group>
                                        <issn pub-type="epub">2667-484X</issn>
                                                                                            <publisher>
                    <publisher-name>Kocaeli University</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.34088/kojose.1695330</article-id>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Ocean Engineering</subject>
                                                            <subject>Maritime Engineering (Other)</subject>
                                                            <subject>Energy Systems Engineering (Other)</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>Okyanus Mühendisliği</subject>
                                                            <subject>Deniz Mühendisliği (Diğer)</subject>
                                                            <subject>Enerji Sistemleri Mühendisliği (Diğer)</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <trans-title-group xml:lang="tr">
                                    <trans-title>Nokta emici dalga enerjisi dönüştürücü şamandıralarının  Ansys AQWA kullanılarak geometri analizi ve optimizasyonu</trans-title>
                                </trans-title-group>
                                                                                                                                                                                                <article-title>Analysis and Optimization of Point Absorber Wave Energy System Buoys Using Ansys</article-title>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0003-3710-7429</contrib-id>
                                                                <name>
                                    <surname>Alver</surname>
                                    <given-names>Fatih</given-names>
                                </name>
                                                                    <aff>ORDU ÜNİVERSİTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20251130">
                    <day>11</day>
                    <month>30</month>
                    <year>2025</year>
                </pub-date>
                                        <volume>8</volume>
                                        <issue>2</issue>
                                        <fpage>147</fpage>
                                        <lpage>153</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20250508">
                        <day>05</day>
                        <month>08</month>
                        <year>2025</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20250629">
                        <day>06</day>
                        <month>29</month>
                        <year>2025</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2018, Kocaeli Journal of Science and Engineering</copyright-statement>
                    <copyright-year>2018</copyright-year>
                    <copyright-holder>Kocaeli Journal of Science and Engineering</copyright-holder>
                </permissions>
            
                                                                                                <trans-abstract xml:lang="tr">
                            <p>Bu çalışmada, dalgaların dikey hareketinden enerji üreten dört farklı nokta emici şamandıra geometrisinin hidrodinamik performansı Ansys AQWA yazılımı kullanılarak analiz edilmiştir. Analizler Karadeniz’in ortalama dalga verileri doğrultusunda gerçekleştirilmiş, şamandıraların tepki genliği operatörü (RAO), ek kütle, radyasyon sönümlemesi ve uyarıcı kuvvet parametreleri değerlendirilmiştir. Elde edilen sonuçlara göre, P4 kodlu şamandıranın RAO eğrisi, Karadeniz’in baskın dalga frekans aralığı olan 0,5–0,7 rad/s’de maksimum değerlere ulaşmış ve enerji emiliminde yüksek performans sergilemiştir. Aynı frekans aralığında P4 tasarımının ek kütle değeri 40–45 kg aralığında sabitlenmiş, bu da enerji emilimini artıran bir etken olarak değerlendirilmiştir. Radyasyon sönümleme değerleri ise P4 için 20–25 N·s/m aralığında gerçekleşmiş; salmalı yapısı ve ağırlık merkezinin salmaya yakınlığı nedeniyle diğer tasarımlara göre daha stabil ve dirençli bir yapı sergilemiştir. Uyarıcı kuvvet analizlerinde ise yine aynı frekans aralığında P4 tasarımı 1900 N/m ile en yüksek değere ulaşmıştır. Bu sonuçlar, P4 şamandırasının Karadeniz koşullarında optimum enerji verimi sunan en uygun geometri olduğunu ortaya koymuştur.</p></trans-abstract>
                                                                                                                                    <abstract><p>In this study, the hydrodynamic performance of four different point absorber buoy geometries, designed to harness energy from the vertical motion of waves, was analyzed using Ansys AQWA software. The analyses were conducted based on the average wave data of the Black Sea, and key hydrodynamic parameters, including Response Amplitude Operator (RAO), added mass, radiation damping, and excitation force, were evaluated. The results indicate that the P4 buoy geometry exhibits peak RAO values within the dominant wave frequency range of the Black Sea (0.5–0.7 rad/s), demonstrating superior energy absorption performance. In the same frequency range, the added mass values for P4 remained within 40–45 kg, contributing to enhanced energy efficiency. The radiation damping coefficient for P4 was found to range between 20–25 N/s, and its stability was attributed to the presence of a submerged mass and a center of gravity positioned near the ballast. Moreover, the excitation force for the P4 buoy reached the highest value among all geometries, with approximately 1900 N/m in the 0.5–0.7 rad/s frequency range. These findings highlight the P4 buoy as the most efficient and hydrodynamically favorable design for wave energy conversion under Black Sea conditions.</p></abstract>
                                                            
            
                                                                                        <kwd-group>
                                                    <kwd>Wave energy</kwd>
                                                    <kwd>  buoy design</kwd>
                                                    <kwd>  hydrodynamic analysis</kwd>
                                                    <kwd>  ansys aqwa</kwd>
                                                    <kwd>  wave energy system</kwd>
                                            </kwd-group>
                            
                                                <kwd-group xml:lang="tr">
                                                    <kwd>Dalga enerjisi</kwd>
                                                    <kwd>  şamandıra tasarım</kwd>
                                                    <kwd>  hidrodinamik analiz</kwd>
                                                    <kwd>  ansys aqwa</kwd>
                                                    <kwd>  dalga enerji sistemi</kwd>
                                            </kwd-group>
                                                                                                                                    <funding-group specific-use="FundRef">
                    <award-group>
                                                    <funding-source>
                                <named-content content-type="funder_name">This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.</named-content>
                            </funding-source>
                                                                    </award-group>
                </funding-group>
                                </article-meta>
    </front>
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