length-scale depent results in DPM-Calculation

Angelina · November 3, 2021, 05:03

When doing the particle trajectory calculation, the result varied whenever the length scale value was reduced. My integration length is 10 ^ -9m. The smallest scale of my grid is 1 * 10-6m. I use the Runge-Kutta method for integration. How can it be that my result is still dependent on the integration length?

Al_Bundy · November 3, 2021, 07:37

Hello Angelina,

that's a good question. I will link myself to this post because I'm experiencing the same issues using Ansys FLUENT DPM.

Best regards,
Al_Bundy

November 3, 2021, 05:03	length-scale depent results in DPM-Calculation	#1
Angelina New Member Join Date: Nov 2021 Posts: 2 Rep Power: 0	When doing the particle trajectory calculation, the result varied whenever the length scale value was reduced. My integration length is 10 ^ -9m. The smallest scale of my grid is 1 * 10-6m. I use the Runge-Kutta method for integration. How can it be that my result is still dependent on the integration length?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Calculation of shear layer length scale for airfoil in deep stall	raviramesh10	Main CFD Forum	0	July 20, 2021 09:33
Calculation of shear layer length scale for airfoil in deep stall	raviramesh10	System Analysis	0	July 16, 2021 03:04
length scale option	rashmi	CFX	2	July 24, 2005 23:39
Length Scale vs. Hydraulic Diameter?	Will	FLUENT	1	April 13, 2004 06:09
Characteristic Length Scale	Thomas P. Abraham	Main CFD Forum	2	April 20, 1999 17:16

November 3, 2021, 07:37		#2
Al_Bundy New Member Join Date: Apr 2020 Posts: 1 Rep Power: 0	Hello Angelina, that's a good question. I will link myself to this post because I'm experiencing the same issues using Ansys FLUENT DPM. Best regards, Al_Bundy