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SIMULATION FILM COOLING IN THE LEADING EDGE REGION OF A TURBINE BLADE (TRENCH EFFECT ON FILM EFFECTIVENESS FROM CYLINDER IN CROSSFLOW) MOHAMAD RASIDI Bin Pairana , NORZELAWATI Binti Asmuinb* Hamidon Bin Sallehc Centre for Energy and Environmental Study (CEIES), Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia (UTHM) Locked Bag 101, Parit Raja, 86400 Batu Pahat, Johor Darul Ta’zim auncle_sid@yahoo.com.my, bNorzela@uthm.edu.my, c Hamidon@uthm.edu.my Keywords: Trench effect, Film cooling, Turbine blade Abstract: Film cooling is one of the cooling techniques applied to the turbine blade.
This study is focus on the effect of differences depth of trench. 3D computational fluid dynamics simulation CFD using ANSYS software will be perform to determine the jet-mainstream interactions to better understand the film effectiveness distributions.
Methodology ANASYS software is used to simulate film cooling in the leading edge involving fluid flow, heat transfer based on simulation.

The present work is a 3D transient numerical simulation of material flow and heat transfer during the FSW process.
Several researchers have used computational fluid dynamics (CFD) modeling to simulate the material flow and the heat flow during the FSW process [3, 7-10], which will be the focus in this paper using experimental data of our previous works.
Numerical Modeling Numerical simulation has several advantages for visualizing material flow , thermal field and strain stresses involved.
Fig. 1 presents the geometric model for the simulation of the FSW process.
Khelfaoui, "Numerical Simulation of Droplet Breakup, Splitting and Sorting in a Microfluidic Device," FDMP-FLUID DYNAMICS & MATERIALS PROCESSING, vol. 11, no. 3, pp. 205-220, 2015

For example, the AUTODYN simulation tool can address nonlinear dynamic problems including solids, fluids, gases, and their interactions using finite elements (FE), finite volume (CFD), and mesh-free particle (SPH).
From the numerical simulation results, the weakest point was determined.
The fine element size of 10 mm used in the numerical simulation leads to a higher concentration.
Therefore, the numerical simulation conducted, within limits, approximates well the strain pattern as compared to the cracks pattern.
De, Numerical simulation of surface explosions over dry, cohesionless soil, Computers and Geotechnics, 43 (2012) 72-79

Numerical simulations, performed using Ansys FLUENT® software, promote the description of the multiphase flow.
Fig. 10 show the mesh built into the software (ANSYS ICEM® CFD).
This allows, with a range of numerically applicable idealization, to use the coarser mesh in all simulations.
Karimian, Modeling and simulation approaches in the resin transfer molding process: A review, Polym.
Oliveira, Applying CFD in manufacturing of polymer composite reinforced with shape memory alloy via resin transfer molding process, Int.

Production practice and CFD simulation results show that (see Fig. 3), the dust-containing gas occurs vortex in the gas chamber after enters from the below of the baffle.
A big vortex vertical the view direction is eliminated after the baffle set according to the Fluent simulation results.

The simulation is conducted by the software Fluent with three-dimensional, pressure-based, steady flow and standard k-ε model, and the residual of simulation is 0.0001.
Results and Discussion Considering the important parameters ( Vscan, h, Pin ), the numerical caculation of three-dimensional CFD model is conducted to obtain the flow characteristics of immersion liquid.

The empirical method and simulation method are analyzed.
Gu[25] took physical simulation to study the flowing state by observing the porthole-die extrusion of plasticine with different colors, and proved the accuracy of the simulation results compared with FEM simulation.
To solve this problem, Cheng[26] etc. proposed multi stage finite element simulation method, in which the simulation is divided into several stages.
Multi stage finite element simulation method could make the simulation continue, but the simulation process must be broken artificially which will decrease the degree of automation.
It shows advantages in the complex aluminium profile extrusion simulation.

The optimized building arrangement can be realized through simulation with application of CFD and ECOTech software.
Besides, according to the sunshine environment simulation, the position and form of public open space can be planned to provide healthy and comfortable outdoor activity space for inhabitants.
Through the analysis of wind pressure simulation and wind vectorgraph simulation, adequate wind pressure could be created between the front and back of each residential building through adjustment of building arrangement.
CityGreen, a simulation assessment software, can be used to assess the greenery eco-benefit of the original site of the residential area as guidance for planning of the greenery system, and also to simulate the eco-effect of greenery system in planning.

Comparison of Material Flow Stress Models Toward More Realistic Simulations of Friction Stir Processes of Mg AZ31B Ali.
Much of the reported values of FE simulations were produced after tuning the tool/workpiece interface boundary conditions to produce temperature profiles that match those experimentally measured.
FE MODEL SIMULATION RESULTS DEFORM 3D was utilized for developing the FE model used in running the FSP simulations.
For each of the constitutive relations, the reference test-case simulation was run at what was found [12] to be optimum process parameters for the model’s tool geometry: 1000 RPM and 90 mm/min.
S., Modeling the Effects of Coolant Application in Friction Stir Processing on Material Microstructure Using 3D CFD Analysis, Journal of Materials Engineering and Performance 21.7 (2012) 1141-1150

A comparison of the numerical results with the experimental data indicates that the 2D simulation has excellent agreement with literature.
In simulation of flow past two tandem circular cylinders, the input flow of the second cylinder is non-uniform in the middle of the cross section.
Numerical approach of the CFD code is presented in section 3.
Fig. 2 shows the C-type grids used for numerical simulation.
In this simulation, a rectangular domain was used to simulate the flow around a stationary circular cylinder as shown in Fig. 1.