@article{Setiawan_Darmawan_Tanujaya_2022, title={Komparasi Simulasi CFD Pada Turbin Cross-Flow Dengan Model Turbulen k-ε STD dan RNG k-ε}, volume={4}, url={https://journal.univpancasila.ac.id/index.php/asiimetrik/article/view/3100}, DOI={10.35814/asiimetrik.v4i1.3100}, abstractNote={<p class="BodyAbstract"><span lang="IN">The cross-flow turbine is </span><span lang="EN-US">one of widely used</span><span lang="IN"> impulse turbine </span><span lang="EN-US">in power generator system due to it’s </span><span lang="IN">simple design and </span><span lang="EN-US">ability to</span><span lang="IN"> be applied to a wide range of head and flow conditions. </span><span lang="EN-US">The flow in a cross-flow turbine flows in a crossed manner and works in 2 stages which could affect the turbine’s performance. Hence the visualization of these flow behavior could indicate the performance. Complexity of the flow inside the runner require the usage of <em>CFD Method to visualize the flow, leaving the gap since numerical model also rely on turbulence model.</em></span><em><span lang="IN"> The purpose of this study </span><span lang="EN-US">is</span><span lang="IN"> to analyze the flow pattern in the nozzle and runner on a cross-flow turbine using the RNG k-ε turbulen</span><span lang="EN-US">ce</span><span lang="IN"> model </span><span lang="EN-US">in</span><span lang="IN"> ANSYS 2021 R2 Academic Version software. The simulation was carried out with 5 variations of nozzle inlet velocity</span><span lang="EN-US">: 2 m/s, 3 m/s, 4 m/s, 5 m/s and 6.487 m/s. The working fluid is assumed to be 1 phased water, with nozzle inlet pressure of 1.05 Pa, temperature of 24.85 <sup>o</sup>C and RNG k-</span><span lang="IN"> ε</span><span lang="EN-US"> turbulence model which compared to STD k-e turbulence model from the previous study. The results show that the </span><span lang="IN">simulation with the RNG k-ε turbulent model</span><span lang="EN-US">s</span><span lang="IN"> resulted in differences in the velocity and pressure profiles of Stage 1 of 3.353% and 87.679% and Stage 2 of 13.653% and 21.826% </span><span lang="EN-US">compared to</span><span lang="IN"> simulation </span><span lang="EN-US">with </span><span lang="IN">k-ε STD </span><span lang="EN-US">models</span><span lang="EN">.&nbsp;&nbsp; </span></em></p&gt;}, number={1}, journal={Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa dan Inovasi}, author={Setiawan, Juan and Darmawan, Steven and Tanujaya, Harto}, year={2022}, month={Jul.}, pages={153-162} }