Hey,
I'm new to flow simulation and I have gone through a lot of examples and I'm getting a grasp on how effective this tool can be.
I have a few questions that maybe some of you could help answer.
I have some images here of my project that I'm working on. I am creating a flow study that has time dependancies. The inlet flow rate is what I will be changing over time.
I have found where I can specify either an equation or a table of values for flow rate as a function of time. The main problem I'm running into is that I need to specify a back and forth cyclical flow from +30 ul/s to -30 ul/sec. Using the table, it will not accept negative values for flow rate (which I guessed it wouldn't but I tried anyway).
How can I create boundry conditions that will allow back and forth flow? As you can see from the image above (or not due to resolution) I have a flow cycle period of 3 cycles / 5 seconds.
Thanks in advance for any help
Okay, I figured out a good way to do this last week.
Because I have a single inlet that will switch between +30uL/s to -30uL/s and the outlet is static pressure at atmospheric, I decided to create a Y shaped inlet that leads into my single inlet. This is created only for the sake of simulation.
I made sure to keep the feature long enough for flow to develop properly before it enters the lower portion of the assembly where I'm interested in.
So far the results have turned out great.
If anyone is attempting to do something similar and needs more info, let me know I'd be glad to help.