Simulasi numerik aliran fluida di sekitar dua silinder sirkuler side-by -side

Hakam, Amirul (2015) Simulasi numerik aliran fluida di sekitar dua silinder sirkuler side-by -side. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penerapan konsep fluida sering digunakan untuk menyelesaikan permasalahan dalam kehidupan sehari-hari salah satunya yaitu permasalahan fluida di sekitar silinder sirkuler. Pada penelitian ini bertujuan untuk menyelesaikan permasalahan fluida di sekitar dua silinder sirkuler yang tersusun side-by-side menggunakan persamaan Navier-Stokes. Persamaan Navier-Stokes incompressible, viscous dan unsteady diselesaikan menggunakan metode beda hingga staggered grid dan algoritma SIMPLE (Semi Implicit Method for Pressure-Linked Equation). Metode beda hingga digunakan untuk menyelesaikan susunan grid yang digunakan sedangkan algoritma SIMPLE digunakan untuk memperoleh nilai komponen kecepatan dan tekanan. Hasil dari penelitian ini adalah memperoleh nilai koefisien hambat yang berdasarkan profil aliran fluida dan distribusi tekanan yang diterima silinder. Profil aliran fluida disimulasikan dengan variasi bilangan Reynolds yaitu 100, 500, 1000, 3000, 5000 dan variasi jarak antar silinder dengan rasio 1.5 ≤ ============================================================================================ The application of fluid concept is often used to solve problems in everyday, one of them is the problem of fluid around circular cylinder. In this study aims to solve the problems of fluid around two circular cylinders arranged side-by-side using the Navier-Stokes equations. Navier-Stokes equations for incompressible, viscous and unsteady solved using finite difference methods staggered grid and SIMPLE algorithms (Semi Implicit Method for Pressure Linked Equation). Finite difference method is used to solve for complete the grid arrangement and the SIMPLE algorithm is used to obtain components of velocity and pressure value. Results of this study was to obtain the coefficient of drag that is based on fluid flow profile and pressure distributions received cylinder. Fluid flow profile is simulated with variations of Reynolds numbers are 100, 500, 1000, 3000, 5000 and variation of the distance between cylinder with the ratio 1.5≤ L / D ≤ 4 where L is the distance between the cylinder and D is the diameter of the cylinder. Then calculate the pressure distribution is based on the value of the received cylinder pressure components. After obtaining the pressure distribution value, then calculate the drag coefficient received cylinder. The result is greater the Reynolds number, the smaller the coefficient of drag that is acceptable cylinder. The wider the distance between the cylinder then drag coefficient smaller value closer to the value of the coefficient of the resistor in the condition of a single cylinder. Having completed the drag coefficient, making the coefficient of drag on the distance equation (L/D).

Item Type: Thesis (Undergraduate)
Additional Information: RSMa 511.8 Hak s
Uncontrolled Keywords: Persamaan Navier-Stokes, Aliran Fluida di Sekitar Dua Silinder, Koefisien Hambat
Subjects: Q Science > Q Science (General) > Q180.55.M38 Mathematical models
Divisions: Faculty of Mathematics and Science > Mathematics > (S1) Undergraduate Theses
Depositing User: - Taufiq Rahmanu
Date Deposited: 18 Nov 2019 01:52
Last Modified: 18 Nov 2019 01:53
URI: http://repository.its.ac.id/id/eprint/71813

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