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July 30, 2017, 12:14 |
Falling box tutorial
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#1 |
New Member
David
Join Date: Jan 2017
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Hello everyone. im working my thesis on the movement of particle on a submerged jet flow.
For the moment im having some troubles so i want to run the tutorial on a mm system. i modify the six dof udf on the mass and inertia values. and i run the case but when the box enter in contact with the water the case crash. so the question its under wish parameters should i run the case? #include "udf.h" #define BMODULUS 2.2e9 #define rho_ref 1000.0 DEFINE_PROPERTY(water_density,c,t) { real rho; real p, dp, p_operating; p_operating = RP_Get_Real("operating-pressure"); p = C_P(c,t); dp = p-p_operating; rho = rho_ref/(1.0-dp/BMODULUS); return rho; } DEFINE_PROPERTY(water_speed_of_sound,c,t) { real a; real p, dp, p_operating; p_operating = RP_Get_Real ("operating-pressure"); p = C_P(c,t); dp = p-p_operating; a = (1.-dp/BMODULUS)*sqrt(BMODULUS/rho_ref); return a; } DEFINE_SDOF_PROPERTIES(falling_box, prop, dt, time, dtime) { prop[SDOF_MASS] = 2.7e-6; prop[SDOF_IZZ] = 4.5e-13; printf ("\n2d_test_box: Updated 6DOF properties"); } Under-Relaxation Factors 0.5 for Body Forces 0.8 for Turbulent Viscosity. Solution Initialization 0.001 m2/s2 for Turbulent Kinetic Energy and 0.001 m2/s3 for Turbulent Dissipation Rate. 1 for air Volume Fraction. |
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July 31, 2017, 19:13 |
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#2 |
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David
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August 6, 2017, 11:53 |
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#3 |
New Member
David
Join Date: Jan 2017
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Up. If someone not understand I need to run the falling box tutorial on mm. So I want to know which parameters I need to modify to run. Thanks for any help
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August 10, 2017, 15:12 |
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#4 |
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David
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August 25, 2017, 08:55 |
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#5 |
New Member
David
Join Date: Jan 2017
Posts: 16
Rep Power: 9 |
Anyone. I'm still looking for a solution to run the tutorial on mm.
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