Steady State Tokamak (SST-1) refurbishment at the Institute for Plasma Research has been recognized and accepted as a Mission activity since Jan 2009 with an ultimate objective of producing the first plasma by the end of 2011. Under the SST-1 Mission mandate, several refurbishment activities have been initiated and pursued vigorously on various sub-systems of SST-1. Developing reliable designs ...

The present work studied various models for predicting turbulence in the problem of injecting a fluid microjet into boundary layer turbulent flow. For this purpose, one-equation Spalart–Allmaras (SA), two-equation k–ε and k–ω, multi-equation transition k-kL–ω, shear stress transport (SST), Reynolds were used solving steady layer, their results are compared with experimental results. Comparing i...

Heat EXchangers (HEX) that are used in City Gate Station (CGS) systems are modeled numerically to recover the exhaust waste heat. It was tried to find the best viscous model to obtain results in accordance with experimental results and to change the heat exchanger design. This HEX is used for recovering heat from exhaust flue gas with a mixture of 40% water and 60% ethylene glycol as the coolin...

The aim of our study is to analyze the impact of insertion holes in the middle of obstacles on the flow around a surface-mounted cube, In order to do this; we studied four configurations of obstacles in a channel with a Reynods number based on obstacle height ReH = 40000. The hexahedral structured meshes were used to solve the fluid dynamics equations .The finite volume method are employed to s...

In the petrochemical industry, multiphase flow, including oil–water two-phase stratified laminar is more common and can be easily obtained through mathematical analysis. However, there limited analytical model for simulation of flow under turbulent flow. This paper introduces a two-dimensional (2D) numerical method to investigate pressure gradient, field, interface height pipeline cross-section...

Abstract A new concept design Catamaran Decommissioning Unit has been developed by Research Center for Hydrodynamics Technology Indonesia. The catamaran a unique shape, however in order to achieve resilient and sustainable the decommissioning unit as it resistance analysis both model testing numerical calculation must be conducted. value from needs validated with results towing tank. of scaling...

Abstract Numerical modeling of the outflow an air jet into water with a guillotine rupture pipeline by VOF method using k-ε and k-ω SST turbulence models was carried out. The calculations were out in axisymmetric approximation. following phases process calculated: formation large gas bubble at place rupture, its growth, separation from behind bubble. It is shown that rate detachment model highe...

A natural laminar flow (NLF) airfoil is designed to reduce drag by expanding areas. In-depth knowledge of transition performance essential for its aerodynamic design. The k-ω-γ-Reθ framework, which consists the SST k-ω turbulence model and γ-Reθ model, employed simulate transitional flows around an NLF wing RAE5243 airfoil. performances under various values turbulent intensity, temperature, ang...

This study reports on the numerical analysis of impact mass ratio Vortex-Induced Vibration (VIV) phenomenon an elastically rigid cylinder, oscillating freely in a crossflow direction. Reynolds-averaged Navier–Stokes (RANS) equations with (k-ω SST) model were used to analyze flow behavior, amplitude and vortex shedding patterns. The was performed at constant Reynold number (Re) = 104 reduced vel...