# Simluate smoke indoor (Smoke visibility​).

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 November 27, 2012, 04:31 Simluate smoke indoor (Smoke visibility​). #1 New Member   Timmy Tang Join Date: Nov 2012 Posts: 2 Rep Power: 0 hi~ I try to do the smoke visbility on Autodesk CFD simulatio, but i can't generate the smoke in CFD i follow the GuideLine, but it is still not success. Can anyone help me here ??? I created a house with two holes. One is on the side, One is on the ceiling. In the middle of the house there is a box where the fire generated. material Volume inside the the house is air. I set it to be variable. The wall of the house is brick. The box in the middle is made by hardwood. Boundary Condition Box: Scale = 1, Heat Generation = 2000W Air: Film Coefficient = 5 W/m2/K, Ref. Temp. = 19 Degree Hole on Ceiling: Volumetic Flow Rate = 50 L/s, Hole on Side : Pressure = 0Pa , Temperature = 20 Degree. Solve: Set Smoke Visibility on Heat Transfer on Specific Extinction Coefficient = 21000 The sign visibility constant characterizes = 3 combustion particulate yield = 0.08 Diffusion Cosfficient = 16 mm^2/s Solution : i set the output quantity is Scalar However, i cannot see the smoke in the CFD. Can Anyone help me I want to create the view like the one in the Guideline. Smoke visibility

 July 2, 2016, 16:59 #2 Senior Member   Have a nice time! Join Date: Feb 2016 Location: mech.eng.ahmedmansour@gmail.com Posts: 291 Rep Power: 10 How can I simulate the fire of diesel for a smoke simulation in fluent?

 October 16, 2018, 10:42 #3 Member   Nazim Join Date: Oct 2013 Posts: 93 Rep Power: 12 HI did you got the method Thanks

 October 19, 2018, 19:27 #4 Senior Member   Have a nice time! Join Date: Feb 2016 Location: mech.eng.ahmedmansour@gmail.com Posts: 291 Rep Power: 10 Hello, I got a UDF from a video but I did not try it because the project was done by FDS. I can send the snapshot to you Thanks

 October 21, 2018, 05:06 #5 Member   Nazim Join Date: Oct 2013 Posts: 93 Rep Power: 12 Please, it will be great

October 21, 2018, 15:47
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Have a nice time!
Join Date: Feb 2016
Location: mech.eng.ahmedmansour@gmail.com
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Here you go Thanks
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