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Ansys Fluent K-Epsilon Model

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Old   September 23, 2016, 06:59
Default Ansys Fluent K-Epsilon Model
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G Shankar
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Hi Brothers/Sisters, I need to analyse and to find Coefficient of drag and lift (CD and CL) for the scaled sedan car moden by using ANSYS-FLUENT (K-Epsilon) Model. The dimensional details of the car model are follows length 460mm, width 160mm and height 140mm which is placed inside the computational domain dimensions are follows as length of 9 times the car length (i.e) 4140mm and width of 1380mm and height of 1150mm. My query is in order to determine turbulent length scale (l=0.07L) where l=turb.length scale and L=chracteristic length
Q.1 For this L, whether I need to use model car model length or computational domain length.
Q.2 How to calculate Hydraulic dia whether Hyd=(4A/P) is right of wrong for this case.:
Q.3 Please suggest any other methods to find CD and CL for the car model.
Q.4 How to calculate turb intensity and turb dissipation rate.
Q.5 Whether in solution controls i need to select compute from inlet zone or front of the model zone.
I am expecting all your golden reviews in my blog, please guide me to solve this problem and thanks in advance.
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cd and cl for car model

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