Hapsari, Dira (2026) Studi Numerik Pengaruh Modifikasi Pompa Sentrifugal Closed Impeller Menjadi Splitter Blades Impeller Dengan Variasi Diameter Inlet Splitter Blades (D1s). Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pompa sentrifugal merupakan salah satu jenis pompa yang banyak digunakan di berbagai sektor industri. Performa pompa sangat dipengaruhi oleh desain impeller, sehingga diperlukan pengembangan geometri impeller untuk meningkatkan head, efisiensi, dan kualitas aliran fluida. Penelitian ini bertujuan untuk menganalisis pengaruh modifikasi closed impeller menjadi splitter blades impeller dengan variasi diameter inlet splitter blade (D₁S) terhadap karakteristik aliran internal (inner flow) dan performa pompa sentrifugal. Penelitian dilakukan secara numerik menggunakan metode Computational Fluid Dynamics (CFD) dengan perangkat lunak ANSYS Fluent. Geometri pompa dimodelkan menggunakan SolidWorks, kemudian dilakukan simulasi aliran steady-state, incompressible, menggunakan fluida air. Variasi diameter inlet splitter blade yang dianalisis meliputi 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, dan 90 mm. Parameter yang dianalisis meliputi distribusi tekanan, distribusi kecepatan, head efektif, efisiensi pompa, serta karakteristik inner flow. Sebelum dilakukan analisis, model numerik divalidasi terhadap data eksperimen untuk memastikan keakuratan hasil simulasi. Hasil penelitian menunjukkan bahwa penambahan splitter blade mampu memperbaiki distribusi aliran, mengurangi daerah separasi dan turbulensi, serta meningkatkan performa pompa dibandingkan dengan impeller original. Variasi diameter inlet splitter blade memberikan pengaruh terhadap nilai head dan efisiensi pompa, sehingga diperoleh konfigurasi yang menghasilkan performa paling optimal berdasarkan hasil simulasi numerik. Selain itu, pola inner flow pada impeller modifikasi menjadi lebih stabil dengan distribusi tekanan dan kecepatan yang lebih merata. Penelitian ini diharapkan dapat menjadi referensi dalam pengembangan desain impeller pompa sentrifugal guna meningkatkan performa hidrolik dan efisiensi sistem pemompaan.
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Centrifugal pumps are widely used in various industrial sectors. Pump performance is highly influenced by the impeller design; therefore, impeller geometry development is required to improve head, efficiency, and flow quality. This study aims to analyze the effect of modifying a closed impeller into a splitter blade impeller with various splitter blade inlet diameters (D₁ S) on the internal flow (inner flow) characteristics and the performance of a centrifugal pump. The study was conducted numerically using the Computational Fluid Dynamics (CFD) method with ANSYS Fluent. The pump geometry was modeled using SolidWorks, followed by steady-state and incompressible flow simulations using water as the working fluid. The inlet diameter variations of the splitter blade analyzed were 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, and 90 mm. The evaluated parameters included pressure distribution, velocity distribution, total head, pump efficiency, and internal flow characteristics. Before the analysis, the numerical model was validated against experimental data to ensure the accuracy of the simulation results. The results indicate that the addition of a splitter blade improves flow distribution, reduces flow separation and turbulence, and enhances pump performance compared to the original impeller. Variations in the splitter blade inlet diameter affect the pump head and efficiency, resulting in an optimal configuration based on the numerical simulation. Furthermore, the internal flow pattern in the modified impeller becomes more stable, with more uniform pressure and velocity distributions. This study is expected to serve as a reference for the development of centrifugal pump impeller designs to improve hydraulic performance and pumping system efficiency.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Kata Kunci: Closed Impeller, Splitter Impeller, Diameter Inlet Splitter, CFD ============================================================ Keywords: Closed Impeller, Splitter Impeller, Diameter Inlet Splitter, CFD |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. T Technology > TJ Mechanical engineering and machinery > TJ903 Pumping machinery. T Technology > TJ Mechanical engineering and machinery > TJ919 Centrifugal pumps--Design and construction. T Technology > TJ Mechanical engineering and machinery > TJ935 Pipe--Fluid dynamics. Tubes--Fluid dynamics |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
| Depositing User: | Dira Indah Hapsari |
| Date Deposited: | 30 Jul 2026 03:18 |
| Last Modified: | 30 Jul 2026 03:18 |
| URI: | http://repository.its.ac.id/id/eprint/139623 |
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