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Numerical Study of Turbulent Flows by Finite Volume Approach & Turbulence Model K-e

Khalife Soltani, Ali | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48090 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Seif, Mohammad Saeed; Taghizadeh Manzari, Mehrdad
  7. Abstract:
  8. High-Speed Crafts’ motion has lots of hydrodynamic complexities, so analytical study of their motion is not feasible. Meanwhile, experimental analysis of their reactions in water is not time-consuming & cost-effective. In spite of code generating & developing problems and complexities in the primary stage of numerical modeling of such problems, this method is the most popular & efficient one. On the other hand, flow around high-speed craft bodies has a turbulent nature and needs special cares to predict reasonable results. In the present study, after representing an introduction about the turbulence modeling, we discissed about governing equation such as momentum, volume fraction and rigid body motion Eqs. Then we introduced and compared different turbulence modeling methods & chose turbulence model according to our application. In the following finite volume discretization of two equations of transport (k & ) is presented. Finally numerical simulation process is explained & validity of the written code is evaluated by 4 test cases and a catamaran motion is simulated and the results are assessed by experimental data. At the end we obsereved good agreement between experimental & numerical results and concluded that the turbulence model is a good choice for simulating fluid flow around HSCs
  9. Keywords:
  10. Numerical Hydrodynamics ; Ship Maneuver Simulating ; K-Epsilon Turbulence Model ; High Speed Craft ; Wall Function

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