Velocity profile inlet varying with z axis and time

HalcyonToast · October 22, 2020, 19:11

Hello,

I need to have a transient velocity inlet. The inlet is transient and reads in wind data every 0.1s. The inlet is on the XZ plane and has 5 data points in the increasing z direction (wind increases in velocity as it gets further from the ground)

Screenshot of some of the data: https://imgur.com/E3geCi6

1 through 5 denotes increasing height

I have already tried this with 5 domains and 5 inlets for each height, but this creates instability and it would run better as a single domain with the velocity interpolated. What's the best way to do this

HalcyonToast · October 27, 2020, 20:29

Anyone? I know the best approach is to write a UDF for this. I know how to interpolate values over distance, just not sure how to read in the data file into the udf and properly assign velocities at the right location and time

October 22, 2020, 19:11	Velocity profile inlet varying with z axis and time	#1
HalcyonToast New Member Join Date: Oct 2020 Posts: 3 Rep Power: 6	Hello, I need to have a transient velocity inlet. The inlet is transient and reads in wind data every 0.1s. The inlet is on the XZ plane and has 5 data points in the increasing z direction (wind increases in velocity as it gets further from the ground) Screenshot of some of the data: https://imgur.com/E3geCi6 1 through 5 denotes increasing height I have already tried this with 5 domains and 5 inlets for each height, but this creates instability and it would run better as a single domain with the velocity interpolated. What's the best way to do this

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October 27, 2020, 20:29		#2
HalcyonToast New Member Join Date: Oct 2020 Posts: 3 Rep Power: 6	Anyone? I know the best approach is to write a UDF for this. I know how to interpolate values over distance, just not sure how to read in the data file into the udf and properly assign velocities at the right location and time