Define dpm bc

potatoning · March 17, 2015, 06:06

I want to achieve the aim that the droplets are escape from a specified interface in the flow zone, and store the temperature and flow rate of droplets in UDM. the continuous phase flows as normal.
Can I use DEFINE_DPM_BC to do this?
pulling~my~hair~~

`e` · March 17, 2015, 18:03

User-Defined Memory (UDM) is for either the cells or nodes within the domain (and is therefore generally used from the perspective of the continuous phase). You could have a UDM for accumulating the mass flow rate of droplets in cells at the boundary. As for the temperature, you could store the last droplet's temperature in a UDM in a similar way.

What exactly is your goal? Because if you're after a list of droplet temperature and flow rates after they have escaped the domain at this particular boundary, then simply save this data to a text file.

March 17, 2015, 06:06	Define dpm bc	#1
potatoning New Member Tao Ning Join Date: Mar 2015 Posts: 23 Rep Power: 11	I want to achieve the aim that the droplets are escape from a specified interface in the flow zone, and store the temperature and flow rate of droplets in UDM. the continuous phase flows as normal. Can I use DEFINE_DPM_BC to do this? pulling~my~hair~~

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March 17, 2015, 18:03		#2
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	User-Defined Memory (UDM) is for either the cells or nodes within the domain (and is therefore generally used from the perspective of the continuous phase). You could have a UDM for accumulating the mass flow rate of droplets in cells at the boundary. As for the temperature, you could store the last droplet's temperature in a UDM in a similar way. What exactly is your goal? Because if you're after a list of droplet temperature and flow rates after they have escaped the domain at this particular boundary, then simply save this data to a text file.