Determination of the number of SPH particles

Ovunc

Hi, 

 

I work sloshing in the basic rectangular tank with the SPH method. I will try to sloshing in a more complex structure in the future. 

 

I'm new to Radioss solver and SPH method. For this reason, there are a few things I would like to consult with you.

 

1. It is clear that as the pitch size decreases, the number of particles formed increases. Increased number of particles will also increase accuracy and solution time. How is the ideal number of particles determined? 
2. I can read contact reaction force and pressure in the model I created. But as with the CFD, is it possible for me to read the fluid pressure?
3. During sloshing, is the value I read from the pressure gauge on the test apparatus the same as the value I read on the contact surface?

 

Thank you for your help

Rogerio Nakano_21179

Hi

1. More than one particle that would interact with the target surface is recommended. If you can add, e.g, 3 is a good start. The more the better , but will increase the solution time.

 

2. with SPH you can use /GAUGE/SPH and /TH/GAUGE to estimate the pressure near the tank wall.

 

3. the pressure would be very close. the more particles interacting with the master segment the smoother the pressure would be at the probing region.

 

Regards